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  CAS NO.: 89-25-8 Molecular Formula: C10H10N2O Molecular Weight: 174.20 Physics and chemistry nature: White or almost white crystalline powder Use: Mainly used in cardio-cerebrovascular raw materia...

Ammonium thiosulfate solution

CAS No: 7783-18-8

Molecular formula: (NH4) 2S2O3

Molecular weight: 148.20

Physicochemical properties: colorless transparent liquid, insoluble in alcohol and ether, slightly soluble in acetone. When heated to 150 ℃, it will decompose to form ammonium sulfite, sulfur, ammonia, hydrogen sulfide and water. The air is very unstable and stable in ammonia gas.

Usage: Mainly used for the processing of color positive film, negative film, color reversal film, color film and photo paper, as a fixing agent.

Packing: Ammonium thiosulfate solution can be packed in plastic drums, with a net weight of 250kg per drum.

Product specifications:

Item Index
Appearance Colorless transparent liquid
content% 56-60
Ammonium sulfite ≤% 1.0
Alkalinity% 0.3-1.5
Insoluble matter (precipitation of calcium and magnesium) ≤% 0.2
Heavy metals (in terms of lead) ≤% 0.001
Iron (Fe) ≤% 0.00025
Sulfide (as sulfur) ≤% 0.0002
Burning residue ≤% 0.1
Specific gravity (20 ℃) 1.310-1.335
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