SAFETY DATA SHEET
Sodium Thiosulphate, 2% Aqueous
1. IDENTIFICATION
Product Identifiers
Product Name:
Sodium Thiosulphate, 2% Aqueous
Other Names:
Synonyms
Product Number(s):
EMS21360-2
CAS Number:
7732-18-5
Recommended use of the chemical and restriction on use
Laboratory use.
Company Details
ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
Emergency Contact Details
ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
2. HAZARDS IDENTIFICATION
Classification of the substance or mixture
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
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
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.
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.
Wash thoroughly after handling.
Do not eat, drink or smoke when using this product.
Primary route(s) of entry
Not Available
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.
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
If eye irritation persists: Get medical advice/attention
Skin:
Wash with plenty of water.
If skin irritation occurs: Get medical advice/attention.
Take off contaminated clothing and wash it before reuse.
If skin irritation occurs: Get medical advice/attention.
Take off contaminated clothing and wash it before reuse.
Environment
Store in a well-ventilated place. Keep container tightly closed.
Dispose of contents/container in accordance with local/regional/national/international regulations.
Dispose of contents/container in accordance with local/regional/national/international regulations.
3. COMPOSITION/INFORMATION ON INGREDIENTS
Name
CAS No.
Content (w/w)
Classification
Sodium Thiosulphate Pentahydrate
10102-17-7
1-5%
Not Available
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.
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.
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
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.
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.
Prevent formation of aerosols.
information about protection against explosions and fires: No special measures required.
Conditions for safe storage
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.
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.
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
Na₂S₂O₃
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
Must not be disposed of together with household garbage. Do not allow product to reach sewage system
Uncleaned packagings:
· Recommendation: Disposal must be made according to official regulations.
· Recommended cleansing agent: Water, if necessary with cleansing agents.
Uncleaned packagings:
· Recommendation: Disposal must be made according to official regulations.
· Recommended cleansing agent: Water, if necessary with cleansing agents.
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.
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.
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
14 August 2025
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
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
This Safety Data Sheet (SDS) has been prepared in compliance with the Preparation of Safety Data Sheets for Hazardous Chemicals Code of Practice February 2016. It is the user's responsibility to determine the suitability of this information for adoption of necessary safety precautions. The information published in this SDS has been compiled from the publications listed in Section 16: to the best of our ability and knowledge these publications are considered accurate. We reserve the right to revise Safety Data Sheets as new information becomes available. Copies may be made for non-profit use.