◇ Sodium thiosulfate
◇ Ammonium Thiosulphate
◇ 45% Potassium sulfite solution
70% Ammonium bisulphite...
◇ Sodium metabisulfite
◇ Vat red F3B
◇ Vat red 54#
◇ Vat red FBM
◇ Vat blue 66#
◇ 1-nitro-2-methyl-anthraquinone
◇ 2B acid
◇ M-chlorophenol
Ammonium Thiosulphate

1. Chemical name:Ammonium Thiosulphate
2. Structural formula:

3. Molecular formula:(NH4)2S2O3
4. Molecular weight:148.20
5. Properties:. Colorless transparent liquid or white crystal. Relative density of crystal: 1.679,easily soluble in water,insoluble in alcohol, ether,slightly soluble in acetone.
6. Quality standard:

Index name
Liquid
Solid
Assay
56~60%
≥98%
Appearance
colorless transparent Liquid
white crystal
Ammonium sulfite
≤1.0%
≤1.0%
Alkalinity
0.3~1.5%
≤0.4%
Insoluble matter ( precipitation of Ca and Mg)
≤0.2%
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Heavy metals(as Pb)
≤0.001%
≤0.002%
Fe
≤0.00025%
≤0.001%
Sulfide(as s)
≤0.0002%
≤0.0002%
Ignition residual
≤0.1%
≤0. 2%
Specific gravity
1.310~1.335
----

7. Packing: Liquid 250kg plastic drum. Solid 25KG plastic woven bag.
8.Uses: Used as fixer for takingPhotographic s,key component of silvering electrobath, shielding effect agent, casting protectant of Al-Mg alloy, bactericide and analytical reagent.