Home Categories Inorganic chemistry Ammonium thiosulfate
A8328932

Ammonium thiosulfate , 96% , 7783-18-8

Synonym(s):
Diammonium thiosulfate

CAS NO.:7783-18-8

Empirical Formula: H8N2O3S2

Molecular Weight: 148.21

MDL number: MFCD00015965

EINECS: 231-982-0

Pack Size Price Stock Quantity
25G RMB23.20 In Stock
100G RMB39.20 In Stock
500G RMB239.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 150 °C (lit.)
Density  1.679 g/mL at 25 °C (lit.)
solubility  H2O: very soluble(lit.)
form  Crystalline Powder
color  White
Odor Ammonical odour
Water Solubility  Soluble in water, slightly soluble in acetone. Insoluble in ethanol and diethyl ether.
Sensitive  Hygroscopic
Merck  14,562
Stability: Stable. Hygroscopic.
InChI InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
InChIKey XYXNTHIYBIDHGM-UHFFFAOYSA-N
SMILES S(=S)(=O)(O)O.N.N
LogP -0.428 (est)

Description and Uses

Ammonium thiosulfate is a white crystallinesolid with an ammonia odor. Molecular weight= 148.21;Freezing/Melting point= 150 C [decomposes ,50℃(solution); .100℃ (anhydrous crystals)]. HazardIdentification (based on NFPA-704 M Rating System):Health 1, Flammability 0, Reactivity 0. Highly soluble inwater.

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.

Safety

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H302-H319
Precautionary statements  P305+P351+P338
Risk Statements  33-36/37/38
Safety Statements  26-37
WGK Germany  1
RTECS  XN6465000
TSCA  Yes
HS Code  28323000
Toxicity LD50 orl-rat: 2890 mg/kg GTPZAB 26(6),54,82

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