Sodium Thiosulphate Aqueous Solutions - 2%

1. Identification

Product Identifiers

Product Name

Sodium Thiosulphate Aqueous Solutions - 2%

Other Names

Synonyms

Product Number(s)

21360-2, EMS21360-2

CAS Number

7732-18-5

Recommended use of the chemical and restriction on use

Company Details

Emergency Contact Details

2. Hazards Identification

Classification of the substance or mixture

Label Elements

Signal Words

Warning

Hazard Statement(s)

• GHS07
• Acute toxicity - oral 4 H302 Harmful if swallowed.
• Acute toxicity - dermal 4 H312 Harmful in contact with skin.
• Acute toxicity - inhalation 4 H332 Harmful if inhaled.
• Skin irritation 2 H315 Causes skin irritation.
• Eye irritation 2B H320 Causes eye irritation.
• Harmful if swallowed, in contact with skin or if inhaled.
• Causes skin and eye irritation.

Precautionary Statement(s)

• Avoid breathing dust/fume/gas/mist/vapours/spray
• Wash thoroughly after handling.
• Do not eat, drink or smoke when using this product.

Primary route(s) of entry

Human Health

Inhalation

Remove person to fresh air and keep comfortable for breathing.

Ingestion

• Call a poison center/doctor if you feel unwell.
• Rinse mouth.

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 advice/attention

Skin

• Use only outdoors or in a well-ventilated area.
• Wear protective gloves / protective clothing.
• Wash with plenty of water.
• If skin irritation occurs: Get medical advice/attention.
• Take off contaminated clothing and wash it before reuse.

Environment

3. Composition / Information on Ingredients

4. First Aid Measures

Ingestion

Immediately call a doctor

Inhalation

• Supply fresh air. If required, provide artificial respiration. Keep patient warm. Consult doctor if symptoms persist.
• In case of unconsciousness place patient stably in side position for transportation.

Skin Contact

Immediately wash with water and soap and rinse thoroughly.

Eye Contact

Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor.

Other Information

• General information:
• Symptoms of poisoning may even occur after several hours; therefore medical observation for at least 48 hours
• after the accident.

5. Firefighting Measures

Suitable extinguishing equipment

Fire

Use fire fighting measures that suit the environment.

HAZCHEM

No further relevant information available.

Special protective equipment and precautions for fire fighters

6. Accidental Release Measures

Personal precautions, protective equipment and emergency procedures

Not required.

Environmental precautions

Dilute with plenty of water

Methods and materials for containment and clean up

• Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust).
• Dispose contaminated material as waste according to section 13.
• Ensure adequate ventilation.

7. Handling and Storage

Precautions for safe handling

• Ensure good ventilation/exhaustion at the workplace.
• Prevent formation of aerosols.
• information about protection against explosions and fires: No special measures required.

Conditions for safe storage

• Requirements to be met by storerooms and receptacles: No special requirements.
• Information about storage in one common storage facility: Not required.
• Further information about storage conditions: Keep receptacle tightly sealed.
• Specific end use(s): No further relevant information available.

8. Exposure Controls / Personal Protection

Exposure Standards

Engineering controls

No further data; see section 7.

Personal protective equipment

Eye and face protection

Tightly sealed goggles.

Skin protection

• Protective gloves
• The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.
• Due to missing tests no recommendation to the glove material can be given for the product/ the preparation/ the
• chemical mixture.
• Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation
• Material of gloves
• The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and
• varies from manufacturer to manufacturer.
• Penetration time of glove material
• The exact break through time has to be found out by the manufacturer of the protective gloves and has to be
• observed.

Body protection

• Keep away from foodstuffs, beverages and feed.
• Immediately remove all soiled and contaminated clothing.
• Wash hands before breaks and at the end of work.
• Avoid contact with the eyes and skin.

Respiratory protection

In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use respiratory protective device that is independent of circulating air.

9. Physical and Chemical Properties

General information

Appearance

Clear Liquid

Odour

Characteristic

pH

Mixture is non-polar/aprotic

Vapour Pressure

at 20 °C (68 °F): 23 hPa (17.3 mm Hg)

Density

at 20 °C (68 °F): 1 g/cm³ (8.345 lbs/gal)

Boiling Point

100 °C (212 °F)

Melting Point

0 °C (32 °F)

Solubility

Fully miscible with water

Specific Gravity of Density

Not determined

Flash Point

Not determined

Flammable (Explosive) Limits

Product does not present an explosion hazard.

Ignition Temperature

Not determined.

Formula

Na₂S₂O?

10. Stability and Reactivity

Reactivity

No further relevant information available.

Chemical stability

Thermal decomposition / conditions to be avoided: No decomposition if used according to specifications.

Possibility of hazardous reactions

No dangerous reactions known.

Conditions to avoid

No further relevant information available.

Incompatible materials

No further relevant information available.

11. Toxicological Information

Acute effects

Not Applicable

Eye contact

Irritating effect

Skin contact

Irritant to skin and mucous membranes.

Ingestion

No sensitizing effects known

Inhalation

No sensitizing effects known

Toxicity and irritation

No interactive effects between components are known.

12. Ecological Information

Ecotoxicity

Not hazardous for water

Persistence and degradability

No further relevant information available

Bioaccumulative potential

No further relevant information available

Other adverse effects

No further relevant information available.

13. Disposal Considerations

General information

14. Transport Information

ADG label required

HAZCHEM

No further relevant information available.

UN Number

Void

Proper shipping name

Void

Transport hazard class

Void

Packing group

Void

Environmental hazard

Not applicable.

Special precautions for users

Not applicable.

Additional information

Not applicable.

15. Regulatory Information

Poisons Schedule Number

• Section 355 (extremely hazardous substances): None of the ingredients is listed.
• Section 313 (Specific toxic chemical listings): None of the ingredients is listed.

Other Information

• Hazard statements
• Harmful if swallowed, in contact with skin or if inhaled.
• Causes skin and eye irritation.
• Precautionary statements
• Avoid breathing dust/fume/gas/mist/vapours/spray
• Wash thoroughly after handling.
• Do not eat, drink or smoke when using this product.
• Use only outdoors or in a well-ventilated area.
• Wear protective gloves / protective clothing.
• If swallowed: Call a poison center/doctor if you feel unwell.
• Rinse mouth.
• If on skin: Wash with plenty of water.
• Specific treatment (see on this label).
• If inhaled: Remove person to fresh air and keep comfortable for breathing.
• If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
• Continue rinsing.
• If skin irritation occurs: Get medical advice/attention.
• Take off contaminated clothing and wash it before reuse.
• If eye irritation persists: Get medical advice/attention.
• Store in a well-ventilated place. Keep container tightly closed.
• Dispose of contents/container in accordance with local/regional/national/international regulations.
• Chemical safety assessment: A Chemical Safety Assessment has not been carried out.

16. Other Information

SDS preparation date

2 March 2026

Comments

• Abbreviations and acronyms:
• ADR: Accord relatif au transport international des marchandises dangereuses par route (European Agreement Concerning the International
• Carriage of Dangerous Goods by Road)
• IMDG: International Maritime Code for Dangerous Goods
• DOT: US Department of Transportation
• IATA: International Air Transport Association
• EINECS: European Inventory of Existing Commercial Chemical Substances
• ELINCS: European List of Notified Chemical Substances
• CAS: Chemical Abstracts Service (division of the American Chemical Society)
• NFPA: National Fire Protection Association (USA)
• HMIS: Hazardous Materials Identification System (USA)
• VOC: Volatile Organic Compounds (USA, EU)
• PBT: Persistent, Bioaccumulative and Toxic
• vPvB: very Persistent and very Bioaccumulative

References

EMS Sodium Thiosulphate, 2% Aqueous https://www.emsdiasum.com/docs/technical/msds/21360-2.pdf 28/12/2021