◇ 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
Sodium thiosulfate

1, Chemical name: Sodium thiosulfate
2, Structural formula:

3, Molecular formula: Na2S2O3·5H2O
4, Molecular weight: 248.17
5, Properties: monoclinic crystal, Melting point : 40-45℃, Relative density :1.729(17℃).
6, Quality standard:

Item
Photographic grade
Industrial grade
Anhydrous grade
Appearance
colorless transparent crystal
colorless transparent crystal
white powder
Assay
≥99.00%
≥98.5%
≥97.0%
Water Insoluble matter
≤0.01%
≤0.03%
≤0.03%
Sulfide
≤0.001%
≤0.003%
≤0.001%
Fe
≤0.001%
≤0.003%
≤0.005%
PH
6.5~9.5
6.5~9.5
6.5~9.5
Water solution reaction
in accordance with the test
in accordance with the test
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Granularity(g/g)
12~16
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7, Packing:25kg, 50kg plastic woven bag, or following your demand g.
8, Uses: used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. and decolor agent