General

Synonyms: sodium thiosulphate pentahydrate, sodium thiosulfate 5-hydrate, sodium hyposulfite
Molecular formula: Na₂S₂O₃ . 5H₂O
CAS No: 10102-17-7
EC No:

Physical data

Appearance: translucent crystals or white powder
Melting point: 48 C
Boiling point:
Vapour density:
Vapour pressure:
Density (g cm^-3): 1.73
Flash point:
Explosion limits:
Autoignition temperature:
Water solubility: appreciable
 

Stability

Stable. Incompatible with strong acids, iodine, mercury.

Toxicology

Dust may act as a skin, eye or respiratory irritant.

Toxicity data
(The meaning of any abbreviations which appear in this section is given here.)

Risk phrases
(The meaning of any risk phrases which appear in this section is given here.)
R36 R37 R38.

Transport information

Non-hazardous for air, sea and road freight.

Personal protection

Avoid breathing dust.

Safety phrases
(The meaning of any safety phrases which appear in this section is given here.)

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This information was last updated on June 19, 2001. We have tried to make it as accurate and useful as possible, but can take no responsibility for its use, misuse, or accuracy. We have not verified this information, and cannot guarantee that it is up-to-date.