All Photos(1)
Synonym(s):
Diammonium thiosulfate
Linear Formula:
(NH4)2S2O3
CAS Number:
Molecular Weight:
148.21
EC Number:
MDL number:
UNSPSC Code:
12352302
eCl@ss:
38030427
PubChem Substance ID:
NACRES:
NA.23
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Quality Level
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
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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.
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Sulfites, thiosulfates, and dithionites
Barbera JJ, et al.
Ullmann's Encyclopedia of Industrial Chemistry, 66(1-3), 1-21 (2000)
Adsorption of Copper from an Ammonia-Thiosulfate Media Using DOWEX 550A Ion Exchange Resin
Vargas C and Navarro P
International Journal of Nonferrous Metallurgy, 5(04), 33-33 (2016)
Electro-plating and characterisation of cadmium sulphide thin films using ammonium thiosulphate as the sulphur source
Abdul-Manaf NA, et al.
Journal of Materials Science: Materials in Electronics, 26(4), 2418-2429 (2015)
The treatment of copper-gold ores by ammonium thiosulfate leaching
Molleman E and Dreisinger D
Hydrometallurgy, 66(1-3), 1-21 (2002)
Bikshandarkoil R Srinivasan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 102, 235-241 (2012-12-12)
Aqueous reaction of ammonium thiosulfate with ethylenediamine (en) results in the formation of the title compound (enH(2))[S(2)O(3)] (1) (enH(2)=ethylenediammonium) in good yields. Compound 1 was characterized by analytical data, IR, Raman and NMR spectra, X-ray powder pattern and its crystal
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