Ammonium thiosulfate
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Description
A white crystalline solid that is used as a photographic fixing agent. Ammonium thiosulfate is also used as a Fungicide, a metal lubricant, and an analytical reagent. It acts as a reducing agent that is effective for cleaning metals and alloys containing Tin, Zinc, Lead, or Silver.
Synonyms and Related Terms
ammonium thiosulphate (Br.)
Risks
- Contact may cause irritation.
- Noncombustible.
- Plant Food: SDS
Physical and Chemical Properties
Soluble in water. Insoluble in ethanol.
| Composition | (NH4)2S2O3 |
|---|---|
| CAS | 7783-18-8 |
| Melting Point | 150 C (dec) |
| Density | 1.32 g/ml |
| Molecular Weight | mol. wt. = 148.21 |
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 598