Good Quality Ammonium Thiosulfate (NH4) 2S2O3
English name: Ammonium Thiosulphate
Appearance: Colorless Transparent Liquid
EINECS No: 231-982-0
MF: （NH4)2S2O3
CAS No.: 7783-18-8
Color : Colorless Transparent Liquid
Molecular weight: 148.2
Melting point: 180℃
Water solubility: (20℃)5g/L
Certificate:SGS, COA, MSDS, ISO
Items | Specification | Results |
Appearance | Colorless Transparent Liquid | Colorless Transparent Liquid |
Content((NH4)2S2O3) w/w % | ≥56.0 | 57.25 |
Content((NH4)2S2O3) w/v % | ≥72.8 | 75.2 |
N w/w% | ≥10 | 10.8 |
N w/v% | ≥13.1 | 14.2 |
Sulfur w/w % | ≥25 | 25.6 |
Sulphur (S ) w/v% | ≥32.8 | 33.6 |
Alkalinity(NH4OH)% | 0.3-1.5 | 0.66 |
Ignition Residue % | ≤0.1 | 0.03 |
Ammonium sulfite % | ≤1.0 | 0.54 |
Sulfide(S) % | ≤0.0002 | ＜0.0002 |
Density(20℃) | 1.290-1.346 | 1.315 |
Insoluble w/w% | ≤0.02 | qualified |
pH (25℃) | 8~9 | 8.36 |
Fe % | ≤0.001 | ＜0.001 |
Pb % | ≤0.0001 | ＜0.0001 |
Hg % | ≤0.0001 | ＜0.0001 |
Cd % | ≤0.0001 | ＜0.0001 |
As % | ≤0.0001 | ＜0.0001 |
Cr % | ≤0.0001 | ＜0.0001 |
Application:
1、Used as analytical reagent, photographic fixer and reducing agent
2、used as a complexing agent in cyanide-free electroplating, combining thiosulfate with silver ions
3、Fertilizer: Ammonium thiocyanate, also known as ammonium thiocyanate, is used to synthesize the insecticide Buprofezin
tert-butyl isothiocyanate as an intermediate, as well as the insecticide Tazadicarb, the fungicide Ecuazole, and the herbicide flufenacet
The intermediate thiosemicarbazide, in addition, it is also used as an auxiliary raw material for the production of hydrogen peroxide,
dyes, and polymerization catalysts for organic synthesis.
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