Sodium Hyposulfite - Na2s2o3a. Photographic & Industrial Grade, Colorless Transparent Crystals, Assay 99.00% Min, Use: Fixers, Plating, Disinfectant, Blush Preventive Agent

We are offering our customers a wide range of Sodium Hyposulfite, which are available following Specifications :-
Formula : Na2S2O3A.
M.W. : 48.2
Packing: 25kg/bag PP/PE
Use: Used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. And decolor agent
6.Appearance: onoclinic system crystal,colorless transparent body.
7.Specifications: Produced in accordance with HG/T2328-92 standard of Chemical Industry Department of China.
Item
Photographic grade
Industrial grade
Appearance
colorless transparent crystal
colorless transparent crystal
Assay
a Y99.00%
a Y98.5%
Water Insoluble matter
a 0.01%
a 0.03%
Sulfide
a 0.001%
a 0.003%
Fe
a 0.001%
a 0.003%
PH
6.5~9.5
6.5~9.5
Water solution reaction
in accordance with the test
in accordance with the test
Granularity(g/g)
12~16
Items
Specification
Na2S2O3A.5H2O
99.0% min
Water-insoluble
0.01% max
Sulphide(as Na2S)
0.001% max
Fe
0.002% max
PH Value(200g/l solution)
6.5~9.5
Density and phase
1.667g/cmA ,solid
Solubility in water
Soluble
Melting point
48.3A C
Boiling point
N/A
Basicity (pKb)
N/A