ICSC 1138 - SODIUM THIOSULFATE

SODIUM THIOSULFATE

ICSC: 1138
_{Peer-Review Status: 04.06.2006 Validated}

Disodium thiosulfate
Thiosulfuric acid, disodium salt
Sodium hyposulfit

CAS #: 7772-98-7 RTECS #: XN6476000
EINECS #: 231-867-5

Formula: Na₂O₃S₂
Molecular mass: 158.1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO contact with oxidizing agents.	In case of fire in the surroundings, use appropriate extinguishing media.
EXPLOSION	Risk of explosion on contact with oxidizing agents.

EXPOSURE
Inhalation		Avoid inhalation of dust.	Fresh air, rest.
Skin			Rinse and then wash skin with water and soap.
Eyes	Redness.	Wear safety goggles.	Rinse with plenty of water for several minutes (remove contact lenses if easily possible).
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers.	EC Classification UN Classification GHS Classification

EMERGENCY RESPONSE	SAFE STORAGE
	Separated from strong oxidants.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS CRYSTALS.

Physical dangers

Chemical dangers
Decomposes on heating. This produces toxic fumes including sulfur oxides. Reacts violently with strong oxidants.

Occupational exposure limits
TLV (NOT-ESTABLISHED):.

Routes of exposure

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.

Effects of short-term exposure

Effects of long-term or repeated exposure

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Decomposes at 300°C Melting point: 48.5°C Density: 1.7 g/cm³ Solubility in water, g/100ml at 20°C: 20.9 Vapour pressure at 20°C: negligible Octanol/water partition coefficient as log Pow: -4.35 (calculated)

NOTES

ADDITIONAL INFORMATION

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012

LEGAL NOTICE

Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

    See Also:
       Toxicological Abbreviations
       SODIUM THIOSULFATE (JECFA Evaluation)