336726

Ammonium thiosulfate

98%

• Synonym(s): Diammonium thiosulfate
• Linear Formula: (NH₄)₂S₂O₃
• CAS Number: 7783-18-8
• Molecular Weight: 148.21
• EC Number: 231-982-0
• MDL number: MFCD00015965
• UNSPSC Code: 12352302
• eCl@ss: 38030427
• PubChem Substance ID: 24860416
• NACRES: NA.23

Properties

• assay: 98%
• form: crystals and lumps
• mp: 150 °C (lit.)
• solubility: H₂O: very soluble(lit.); ethanol: insoluble(lit.)
• density: 1.679 g/mL at 25 °C (lit.)
• SMILES string: N.N.OS(O)(=O)=S
• InChI: 1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
• InChI key: XYXNTHIYBIDHGM-UHFFFAOYSA-N

Description

General description

Ammonium thiosulfate is a non-toxic inorganic compound that is majorly used as a fertilizer and can be used as an alternative to cyanide based leaching. It has a hygroscopic nature and is soluble in water. It can be produced by the reaction of ammonia, water, and sulfur dioxide. It can be used as a photographic fixing salt.

Application

Ammonium thiosulfide can be used as a source of sulfur for the formation of cadmium sulfide thin films for electronic applications. It can also be used in the treatment of copper-gold ores for the recovery of gold.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)