Page 1/5
Material Safety Data Sheet
acc. to OSHA and ANSI
Printing date 09/22/2004 Reviewed on 07/30/2004
1 Identification of substance:
Product details:
Product name: Sodium thiosulfate, 1.0N standardized solution
Stock number: 35647
Manufacturer/Supplier:
Alfa Aesar, A Johnson Matthey Company
Johnson Matthey Catalog Company, Inc.
30 Bond Street
Ward Hill, MA 01835-8099
Emergency Phone: (978) 521-6300
CHEMTREC: (800) 424-9300
Web Site: www.alfa.com
Information Department: Health, Safety and Environmental Department
Emergency information:
During normal hours the Health, Safety and Environmental
Department. After normal hours call Chemtrec at (800) 424-9300.
2 Composition/Data on components:
Chemical characterization:
Description: (CAS#)
Sodium thiosulfate (CAS# 7772-98-7); 15.8%
Water (CAS# 7732-18-5); 84.2%
3 Hazards identification
Hazard description: Not applicable
Information pertaining to particular dangers for man and
environment
Not applicable
Classification system
HMIS ratings (scale 0-4)
(Hazardous Materials Identification System)
HEALTH 1 Health (acute effects) = 1
Flammability = 0
FIRE 0
Reactivity = 0
REACTIVITY 0
4 First aid measures
After inhalation
Supply fresh air. If required, provide artificial respiration. Keep
patient warm.
Seek immediate medical advice.
After skin contact
Immediately wash with water and soap and rinse thoroughly.
Seek immediate medical advice.
After eye contact
Rinse opened eye for several minutes under running water. Then
consult a doctor.
(Contd. on page 2)
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Page 2/5
Material Safety Data Sheet
acc. to OSHA and ANSI
Printing date 09/22/2004 Reviewed on 07/30/2004
Product name: Sodium thiosulfate, 1.0N standardized solution
(Contd. of page 1)
After swallowing Seek medical treatment.
5 Fire fighting measures
Suitable extinguishing agents
Product is not flammable. Use fire fighting measures that suit the
surrounding fire.
Protective equipment:
Wear self-contained respirator.
Wear fully protective impervious suit.
6 Accidental release measures
Person-related safety precautions:
Wear protective equipment. Keep unprotected persons away.
Ensure adequate ventilation
Measures for environmental protection:
Do not allow material to be released to the environment without
proper governmental permits.
Measures for cleaning/collecting:
Absorb with liquid-binding material (sand, diatomite, acid binders,
universal binders, sawdust).
Additional information:
See Section 7 for information on safe handling
See Section 8 for information on personal protection equipment.
See Section 13 for disposal information.
7 Handling and storage
Handling
Information for safe handling:
Keep container tightly sealed.
Store in cool, dry place in tightly closed containers.
No special precautions are necessary if used correctly.
Information about protection against explosions and fires:
The product is not flammable
Storage
Requirements to be met by storerooms and receptacles:
No special requirements.
Information about storage in one common storage facility:
Aqueous solutions are incompatible with alkali and alkaline earth
metals and many reactive organic and inorganic chemicals.
Further information about storage conditions:
Keep container tightly sealed.
Store in cool, dry conditions in well sealed containers.
USA
(Contd. on page 3)
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Page 3/5
Material Safety Data Sheet
acc. to OSHA and ANSI
Printing date 09/22/2004 Reviewed on 07/30/2004
Product name: Sodium thiosulfate, 1.0N standardized solution
(Contd. of page 2)
8 Exposure controls and personal protection
Additional information about design of technical systems:
Properly operating chemical fume hood designed for hazardous
chemicals and having an average face velocity of at least 100 feet
per minute.
Components with limit values that require monitoring at the
workplace:
Not required.
Additional information: No data
Personal protective equipment
General protective and hygienic measures
The usual precautionary measures for handling chemicals should be
followed.
Keep away from foodstuffs, beverages and feed.
Remove all soiled and contaminated clothing immediately.
Wash hands before breaks and at the end of work.
Breathing equipment:
Use suitable respirator when high concentrations are present.
Protection of hands: Impervious gloves
Eye protection: Safety glasses
Body protection: Protective work clothing.
9 Physical and chemical properties:
General Information
Form: Solution
Color: Colorless
Odor: Odorless
Change in condition
Melting point/Melting range: Not determined
Boiling point/Boiling range: Not determined
Sublimation temperature /
start: Not determined
Flash point: Not applicable
Not determined
Ignition temperature: Not determined
Decomposition temperature: Not determined
Danger of explosion: Product does not present an
explosion hazard.
Explosion limits:
Lower: Not determined
Upper: Not determined
Vapor pressure: Not determined
Density: Not determined
(Contd. on page 4)
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Page 4/5
Material Safety Data Sheet
acc. to OSHA and ANSI
Printing date 09/22/2004 Reviewed on 07/30/2004
Product name: Sodium thiosulfate, 1.0N standardized solution
(Contd. of page 3)
Solubility in / Miscibility with
Water: Fully miscible
10 Stability and reactivity
Thermal decomposition / conditions to be avoided:
Decomposition will not occur if used and stored according to
specifications.
Materials to be avoided:
Oxidizing agents
Aqueous solutions are incompatible with alkali and alkaline earth
metals and many reactive organic and inorganic chemicals.
Dangerous reactions
Reacts with alkali metals
Reacts with alkaline earth metals
Dangerous products of decomposition: Sulfur dioxide
11 Toxicological information
Acute toxicity:
Primary irritant effect:
on the skin: May cause irritation
on the eye: May cause irritation
Sensitization: No sensitizing effects known.
Subacute to chronic toxicity:
Ingestion may cause cyanosis. Large doses may have a cathartic
effect.
Additional toxicological information:
To the best of our knowledge the acute and chronic toxicity of this
substance is not fully known.
No classification data on carcinogenic properties of this material
is available from the EPA, IARC, NTP, OSHA or ACGIH.
12 Ecological information:
General notes:
Do not allow material to be released to the environment without
proper governmental permits.
13 Disposal considerations
Product:
Recommendation
Consult state, local or national regulations to ensure proper
disposal.
Uncleaned packagings:
Recommendation:
Disposal must be made according to official regulations.
(Contd. on page 5)
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Page 5/5
Material Safety Data Sheet
acc. to OSHA and ANSI
Printing date 09/22/2004 Reviewed on 07/30/2004
Product name: Sodium thiosulfate, 1.0N standardized solution
(Contd. of page 4)
Recommended cleansing agent:
Water, if necessary with cleansing agents.
14 Transport information
Not a hazardous material for transportation.
DOT regulations:
Hazard class: None
Land transport ADR/RID (cross-border)
ADR/RID class: None
Maritime transport IMDG:
IMDG Class: None
Air transport ICAO-TI and IATA-DGR:
ICAO/IATA Class: None
Transport/Additional information:
Not dangerous according to the above specifications.
15 Regulations
Product related hazard informations:
Observe the general safety regulations when handling chemicals
National regulations
All components of this product are listed in the U.S. Environmental
Protection Agency Toxic Substances Control Act Chemical substance
Inventory.
Information about limitation of use:
For use only by technically qualified individuals.
16 Other information:
Employers should use this information only as a supplement to other
information gathered by them, and should make independent judgement
of suitability of this information to ensure proper use and protect
the health and safety of employees. This information is furnished
without warranty, and any use of the product not in conformance
with this Material Safety Data Sheet, or in combination with any
other product or process, is the responsibility of the user.
Department issuing MSDS:
Health, Safety and Environmental Department.
Contact: Darrell R. Sanders
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