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Ammonium thiosulfate ((NH4)2S2O3)-Powder

Ammonium thiosulfate ((NH4)2S2O3)-Powder

CAS: 7783-18-8
Molecular Formula: (NH4)2S2O3
Purity: 96%
Products Code: TR0701160800UN
Specification Model: -100-325 Mesh
EINECS No.: 231-982-0
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Ammonium thiosulfate ((NH4)2S2O3)-Powder introduce:


Ammonium thiosulfate (ammonium thiosulphate in British English) is an inorganic compound with the formula (NH4)2S2O3. It is white crystalline solid with ammonia odor, readily soluble in water, slightly soluble in acetone and insoluble in ethanol and diethyl ether.

Chemical formula:(NH4)2S2O3

Formula weight: 148.20g/mol

Appearance: White cryst powder

Melting Point: ca 180°C

Density 1.64g/ml

Sensitivity: Store under Nitrogen. Hygroscopic. Ambient temperatures.

Solubility: Soluble in water, slightly soluble in acetone. Insoluble in ethanol and diethyl ether.


Ammonium thiosulfate finds application for leaching of gold and silver since it forms strong complexes. It is widely utilized as a photographic fixing agent, which acts quicklier than sodium thiosulfate fixers. It serves as a fertilizer. It acts as an additive to coal-waste mixtures to inhibit the formation of dangerous dioxins and furans. It is used as an analytical reagent in laboratories.
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