Checklists and Tools

Quick access to all of chesse.org’s tools, templates and checklists.

For all practical work that includes hazardous chemicals or hazardous equipment, the teacher or a laboratory technician is required to do a risk assessment.

Further reading: Risk Assessment

Chemicals in the science classroom must be labelled in accordance to EU regulations. If you make your own solutions, they should also be labelled to allow identification and proper handling.

Further reading: Labelling

The school is legally required to maintain an updated chemical inventory – a collection of safety data sheets for all chemicals and solutions used.

All schools are legally required to dispose of chemicals in accordance to regulations and in a way that ensures proper waste management.

Interactive decision tree for choosing waste storage containers:
Is your waste hazardous chemical waste?
  • Yes
    Does your waste contain organic substance?
    • Yes
      Is your waste halogenated?
      • Yes
        Container: All halogenated organic substances and waste from halogenation reactions of organic substances
      • No
        Container: Non-halogenated organic substances
    • No
      Does your waste contain toxic inorganic salts?
      • Yes
        Container: Solutions of toxic inorganic salts
      • No
        Is your waste acidic?
        • Yes
          Container: Acidic solutions
        • No
          Is your waste alkaline?
          • Yes
            Container: Alkaline solutions
          • No
            Please start over
  • No
    Is your waste a laboratory waste?
    • Yes
      Is your waste heavily contaminated?
      • Yes
        Is your waste pointed and/or sharp?
        • Yes
          Container: pointed and/or sharp contaminated solid waste
        • No
          Container: Other contaminated solid waste
      • No
        Is your waste a glass not defined as recyclable?
        • Yes
          Container: Uncontaminated laboratory glass
        • No
          Recycle in non laboratory bins
    • No
      Recycle in non laboratory bins

Further reading: Waste Management

When it comes to taking care of the chemistry lab, many tasks do not fit into teacher’s ordinary pedagogical work. To ensure that chemical safety is assured in the science department, it is a good idea that the management of the school (e.g. the principal) specifies these tasks in writing.

Examples of tasks that can be distributed to a suitably qualified person at the science department:

  • Organising the health and safety assessment of the department
  • Safe storage of chemicals used in education
  • Inspection and maintenance of the equipment in the science department

When an employee is assigned a safety task, it is the employer’s responsibility to provide the resources required to do the work.

We recommend that students have a course in basic laboratory safety at the beginning of each year, adapted to the needs and activities of the age group. This includes learning the rules that apply in the science or chemistry laboratory and how to read and interpret hazard pictograms. Making the rules together with the students through discussion can make them easier to remember and increase compliance. It can also be a good idea to train students in specific laboratory techniques, for example correct use of gas burner or pipetting technique to ensure correct handling and minimise risk of accidents. In such cases, awarding a certificate or a badge as proof of completed training can serve to document the student’s mastery of practical skills.

Every task involving the management of risks needs to be subject to a documented risk assessment. The level of detail in the risk assessment should be proportionate to the risk. If different tasks involve the same type of chemical risks, risk assessments can be assessed together.

A risk assessment of practical work requires three steps:

  • Identify the hazards associated with the chemicals, equipment and procedures you are planning.
  • Assess the risks connected with each part of the experiment, demonstration or preparation.
  • Decide what precautionary measures should be in place to eliminate the hazard, or to control the risks you have identified.

The risk assessment should be documented, and include:

  • the class, laboratory or classroom concerned
  • all the hazards that you identified
  • the levels of risk associated with these hazards
  • the situations where there is need to eliminate or reduce a risk
  • the measures that should be taken to eliminate the hazard or control the risk
  • which equipment should be available during the experiment or demonstration, or on standby in case of spillage or accident
  • the emergency procedures in case of an accident

Hazard Information on Common Chemicals

The list of chemicals below contains hazard information on some common solutions used in chemistry education. The hazard information depends on the concentration of the solution, so make sure to choose the right concentration interval.

If the substance is not in the list below, try to find a safety data sheet for a solution with the same substance and concentration. Use the hazard pictogram(s), signal word and hazard statements in the safety data sheet on the label. Choose the precautionary statements that are relevant to how the solution will be used in the classroom. If a safety data sheet with the right concentration is not available, use a safety data sheet for a more concentrated solution or for the pure substance. In this case, this may over classify the solution. However, better safe than sorry.

The CheSSE Label Generator

The label generator generates labels with the appropriate label elements. These are based on harmonized classification and may differ slightly from information in safety data sheets from different suppliers.

When clicking on a chemical in the list, the classification for different concentration intervals is shown. It is then possible to generate a label by clicking “generate label” for the right concentration interval. The generated label can be copied and pasted for example into a textbox in a Word document. In this way it is possible to print several labels on the same page.  

Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

17.4 M > C ≥ 13.3 M
100 % > C ≥ 80 %

Generate label
FlameHarmed material and harmed handDangerFlammable liquid and vapour. Causes severe skin burns and eye damage.Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

13.3 M > C ≥ 4.1 M
80 % > C ≥ 25 %

Generate label
Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

4.1 M > C ≥ 1.6 M
25 % > C ≥ 10 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 1.6 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Acids
Store below eye level. Concentrations above 80 % should be stored in the cabinet with water reactive substances.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 4.6 M
C ≥ 25 %

Generate label
Exclamation markWarningHarmful if swallowed. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

4.6 M > C ≥ 1.8 M
25 % > C ≥ 10 %

Generate label
Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 1.8 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 20 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 13.4 M
C ≥ 25 %

Generate label
Harmed material and harmed handExclamation markDead plant and dead fishDangerCauses severe skin burns and eye damage. May cause respiratory irritation. Very toxic to aquatic life.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment. Collect spillage.

13.4 M > C ≥ 2.9 M
25 % > C ≥ 5 %

Generate label
Harmed material and harmed handExclamation markDangerCauses severe skin burns and eye damage. May cause respiratory irritation.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

2.9 M > C ≥ 1.7 M
5 % > C ≥ 3 %

Generate label
Harmed material and harmed handExclamation markDangerCauses skin irritation. Causes serious eye damage.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

1.7 M > C ≥ 0.58 M
3 % > C ≥ 1 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.58 M
C < 1 %

Generate label
Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Bases
Waste DisposalHazardous waste concentration limit: 1 %
Container: Alkaline solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 1.4 M
C ≥ 33 %

Generate label
Skull and crossbonesDangerToxic if swallowed. Harmful if inhaled.Wash hands thoroughly after handling. IF SWALLOWED: Immediatly call a doctor. Avoid breathing dust/mist.

1.4 M > C ≥ 1.3 M
33 % > C ≥ 30 %

Generate label
Exclamation markWarningHarmful if swallowed. Harmful if inhaled.Wash hands thoroughly after handling. Avoid breathing dust/mist.

1.3 M > C ≥ 0.2 M
30 % > C ≥ 5 %

Generate label
Exclamation markWarningHarmful if swallowed.Wash hands thoroughly after handling.

C < 0.2 M
C < 5 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Toxic
Solid should be stored in cabinet: Oxidising agents.
Waste DisposalHazardous waste concentration limit: 5 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 1.2 M
C ≥ 33 %

Generate label
Skull and crossbonesDangerToxic if swallowed. Harmful if inhaled. Causes serious eye irritation.Wash hands thoroughly after handling. IF SWALLOWED: Immediatly call a doctor. Avoid breathing dust/mist. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

1.2 M > C ≥ 1.1 M
33 % > C ≥ 30 %

Generate label
Exclamation markWarningHarmful if swallowed. Harmful if inhaled. Causes serious eye irritation.Wash hands thoroughly after handling. Avoid breathing dust/mist. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

1.1 M > C ≥ 0.38 M
30 % > C ≥ 10 %

Generate label
Exclamation markWarningHarmful if swallowed. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.38 M > C ≥ 0.19 M
10 % > C ≥ 5 %

Generate label
Exclamation markWarningHarmful if swallowed.Wash hands thoroughly after handling.

C < 0.19 M
C < 5 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 5 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

0.26 M > C ≥ 0.13 M
2 % > C ≥ 1 %

Generate label
Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.13 M
C < 1 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Bases
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Alkaline solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.5 M
C ≥ 10 %

Generate label
Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.5 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Acids
Waste DisposalHazardous waste concentration limit: 20 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 1.5 M
C ≥ 25 %

Generate label
Exclamation markDead plant and dead fishWarningHarmful if swallowed. Causes skin irritation. Causes serious eye irritation. Very toxic to aquatic life with long lasting effects.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention. Avoid release to the environment. Collect spillage.

1.5 M > C ≥ 0.5 M
25 % > C ≥ 10 %

Generate label
Exclamation markDead plant and dead fishWarningCauses skin irritation. Causes serious eye irritation. Very toxic to aquatic life with long lasting effects.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention. Avoid release to the environment. Collect spillage.

0.5 M > C ≥ 0.15 M
10 % > C ≥ 2.5 %

Generate label
Dead plant and dead fishWarningVery toxic to aquatic life with long lasting effects.Avoid release to the environment. Collect spillage.

0.15 M > C ≥ 0.015 M
2.5 % > C ≥ 0.25 %

Generate label
Dead plant and dead fish Toxic to aquatic life with long lasting effects.Avoid release to the environment. Collect spillage.

0.015 M > C ≥ 0.0015 M
0.25 % > C ≥ 0.025 %

Generate label
  Harmful to aquatic life with long lasting effects.Avoid release to the environment.

C < 0.0015 M
C < 0.025 %

Generate label
Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 0.25 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 6.8 M
C ≥ 25 %

Generate label
Harmed material and harmed handExclamation markDangerCauses severe skin burns and eye damage. May cause respiratory irritation.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

6.8 M > C ≥ 2.7 M
25 % > C ≥ 10 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation. May cause respiratory irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 2.7 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Acids
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

10 M > C ≥ 7.3 M
35 % > C ≥ 25 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if swallowed. Causes serious eye damage.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

7.3 M > C ≥ 2.3 M
25 % > C ≥ 8 %

Generate label
Harmed material and harmed handDangerCauses serious eye damage.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

2.3 M > C ≥ 1.4 M
8 % > C ≥ 5 %

Generate label
Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 1.4 M
C < 5 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageAt concentrations below 50 % hydrogen peroxide can be stored in the cabinet for acids, but should preferably be stored cold in a refrigirator. Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Small amounts should be reacted to completion or diluted below 1 % and then poored down the drain.
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.9 M
C ≥ 25 %

Generate label
Exclamation markWarningHarmful if swallowed. Causes skin irritation. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

0.9 M > C ≥ 0.35 M
25 % > C ≥ 10 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.35 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 20 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.9 M
C ≥ 25 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if swallowed. Causes severe skin burns and eye damage. Harmful to aquatic life with long lasting effects.Wash hands thoroughly after handling. Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment.

0.9 M > C ≥ 0.18 M
25 % > C ≥ 5 %

Generate label
Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.18 M > C ≥ 0.11 M
5 % > C ≥ 3 %

Generate label
Harmed material and harmed handExclamation markDangerCauses skin irritation. Causes serious eye damage.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.11 M > C ≥ 0.036 M
3 % > C ≥ 1 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.036 M
C < 1 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Toxic
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

15.8 M > C ≥ 14 M
70 % > C ≥ 65 %

Generate label
Flame over circleHarmed material and harmed handSkull and crossbonesDangerMay intensify fire; oxidiser. Toxic if inhaled. Causes severe skin burns and eye damage.Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Keep away from clothing and other combustible materials. Avoid breathing vapours. Use only outdoors or in a well-ventilated area. IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a doctor. Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

14 M > C ≥ 4.5 M
65 % > C ≥ 28.6 %

Generate label
Harmed material and harmed handSkull and crossbonesDangerToxic if inhaled. Causes severe skin burns and eye damage.Avoid breathing vapours. Use only outdoors or in a well-ventilated area. IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a doctor. Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

4.5 M > C ≥ 2.2 M
28.6 % > C ≥ 14.3 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if inhaled. Causes severe skin burns and eye damage.Avoid breathing vapours. Call a doctor if you fell unwell. Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

2.2 M > C ≥ 0.79 M
14.3 % > C ≥ 5 %

Generate label
Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.79 M > C ≥ 0.47 M
5 % > C ≥ 3 %

Generate label
Harmed material and harmed handDangerCauses skin irritation. Causes serious eye damage.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.47 M > C ≥ 0.15 M
3 % > C ≥ 1 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.15 M
C < 1 %

Generate label
Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Acids
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 2.55 M
C ≥ 25 %

Generate label
Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

2.55 M > C ≥ 1.02 M
25 % > C ≥ 10 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 1.02 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Acids
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 4.4 M
C ≥ 25 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if swallowed. Causes severe skin burns and eye damage.Wash hands thoroughly after handling. Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

4.4 M > C ≥ 0.35 M
25 % > C ≥ 2 %

Generate label
Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.35 M > C ≥ 0.08 M
2 % > C ≥ 0.5 %

Generate label
Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.08 M
C < 0.5 %

Generate label
Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Bases
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Alkaline solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.84 M
C ≥ 10 %

Generate label
Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.84 M
C < 10 %

Generate label
Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 20 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 5.6 M
C ≥ 55 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if swallowed, in contact with skin or if inhaled. Causes serious eye damage. Harmful to aquatic life with long lasting effects.Wash hands thoroughly after handling. Avoid breathing dust/mist. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment.

5.6 M > C ≥ 3 M
55 % > C ≥ 30 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if swallowed or if inhaled. Causes serious eye damage. Harmful to aquatic life with long lasting effects.Wash hands thoroughly after handling. Avoid breathing dust/mist. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment.

3 M > C ≥ 2.5 M
30 % > C ≥ 25 %

Generate label
Harmed material and harmed handExclamation markDangerHarmful if swallowed. Causes serious eye damage. Harmful to aquatic life with long lasting effects.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment.

2.5 M > C ≥ 0.3 M
25 % > C ≥ 3 %

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Harmed material and harmed handDangerCauses serious eye damage.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.3 M > C ≥ 0.1 M
3 % > C ≥ 1 %

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Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.1 M
C < 1 %

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Not classified as a harmful mixture
Storage and Waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 10 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.29 M
C ≥ 5 %

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Harmed material and harmed handDead plant and dead fishDangerCauses severe skin burns and eye damage. Very toxic to aquatic life with long lasting effects.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment. Collect spillage.

0.29 M > C ≥ 0.17 M
5 % > C ≥ 3 %

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Harmed material and harmed handDead plant and dead fishDangerCauses skin irritation. Causes serious eye damage. Very toxic to aquatic life with long lasting effects.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment. Collect spillage.

0.17 M > C ≥ 0.058 M
3 % > C ≥ 1 %

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Exclamation markDead plant and dead fishWarningCauses skin irritation. Causes serious eye irritation. Very toxic to aquatic life with long lasting effects.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention. Avoid release to the environment. Collect spillage.

0.058 M > C ≥ 0.001 M
1 % > C ≥ 0.025 %

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Dead plant and dead fishWarningVery toxic to aquatic life with long lasting effects.Avoid release to the environment. Collect spillage.

0.001 M > C ≥ 0.0001 M
0.025 % > C ≥ 0.0025 %

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Dead plant and dead fish Toxic to aquatic life with long lasting effects.Avoid release to the environment. Collect spillage.

0.0001 M > C ≥ 0.00001 M
0.0025 % > C ≥ 0.00025 %

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  Harmful to aquatic life with long lasting effects.Avoid release to the environment.

C < 0.00001 M
C < 0.00025 %

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Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Toxic
Solid should be stored in cabinet: Oxidising agents
Waste DisposalHazardous waste concentration limit: 0.25 %
Container: Solutions of toxic inorganic salts
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.9 M
C ≥ 10 %

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Exclamation markWarningCauses serious eye irritation.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.9 M
C < 10 %

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Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Bases
Waste DisposalHazardous waste concentration limit: 20 %
Container: Alkaline solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 0.5 M
C ≥ 2 %

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Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

0.5 M > C ≥ 0.125 M
2 % > C ≥ 0.5 %

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Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.125 M
C < 0.5 %

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Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Bases
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Alkaline solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 1.5 M
C ≥ 15 %

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Harmed material and harmed handDangerCauses severe skin burns and eye damage.Wear eye protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor.

1.5 M > C ≥ 0.5 M
15 % > C ≥ 5 %

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Exclamation markWarningCauses skin irritation. Causes serious eye irritation.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention.

C < 0.5 M
C < 5 %

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Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Acids
Store below eye level.
Waste DisposalHazardous waste concentration limit: 1 %
Container: Acidic solutions
Labelling
Suggestion of P-statments are made for the use of the chemicals in secondary chemistry education
ConcentrationHazard pictogramSignal wordH-statementsP-statements

C ≥ 1.5 M
C ≥ 25 %

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Harmed material and harmed handExclamation markDead plant and dead fishDangerHarmful if swallowed. Causes serious eye damage. Very toxic to aquatic life with long lasting effects.Wash hands thoroughly after handling. Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment. Collect spillage.

1.5 M > C ≥ 0.18 M
25 % > C ≥ 3 %

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Harmed material and harmed handDead plant and dead fishDangerCauses serious eye damage. Very toxic to aquatic life with long lasting effects.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a doctor. Avoid release to the environment. Collect spillage.

0.18 M > C ≥ 0.15 M
3 % > C ≥ 2.5 %

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Exclamation markDead plant and dead fishWarningCauses serious eye irritation. Very toxic to aquatic life with long lasting effects.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention. Avoid release to the environment. Collect spillage.

0.15 M > C ≥ 0.06 M
2.5 % > C ≥ 1 %

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Exclamation markDead plant and dead fishWarningCauses serious eye irritation. Toxic to aquatic life with long lasting effects.Wear eye protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention. Avoid release to the environment. Collect spillage.

0.06 M > C ≥ 0.015 M
1 % > C ≥ 0.25 %

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Dead plant and dead fish Toxic to aquatic life with long lasting effects.Avoid release to the environment. Collect spillage.

0.015 M > C ≥ 0.0015 M
0.25 % > C ≥ 0.025 %

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  Harmful to aquatic life with long lasting effects.Avoid release to the environment.

C < 0.0015 M
C < 0.025 %

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Not classified as a harmful mixture
Storage and waste disposal
StorageCabinet: Toxic
Waste DisposalHazardous waste concentration limit: 0.25 %
Container: Solutions of toxic inorganic salts
Interactive decision tree:
Is your waste hazardous chemical waste?
  • Yes
    Does your waste contain organic substance?
    • Yes
      Is your waste halogenated?
      • Yes
        Container: All halogenated organic substances and waste from halogenation reactions of organic substances
      • No
        Container: Non-halogenated organic substances
    • No
      Does your waste contain toxic inorganic salts?
      • Yes
        Container: Solutions of toxic inorganic salts
      • No
        Is your waste acidic?
        • Yes
          Container: Acidic solutions
        • No
          Is your waste alkaline?
          • Yes
            Container: Alkaline solutions
          • No
            Please start over
  • No
    Is your waste a laboratory waste?
    • Yes
      Is your waste heavily contaminated?
      • Yes
        Is your waste pointed and/or sharp?
        • Yes
          Container: pointed and/or sharp contaminated solid waste
        • No
          Container: Other contaminated solid waste
      • No
        Is your waste a glass not defined as recyclable?
        • Yes
          Container: Uncontaminated laboratory glass
        • No
          Recycle in non laboratory bins
    • No
      Recycle in non laboratory bins