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Sodium Thiosulfate
Molecular formula:Na2S2O3·5H2O
Molecular weight:248
CAS No.:10102-17-7
Property:Colorless, transparent single oblique crystals, specific gravity 1.729. It's soluble in water easily, with strong reducing property.
Usage:Used in photographic, electroplate, purifying soft water and tanning processing hides, it also can be used as reducing agent, deoxidizer, sulfur dyeing agent, anti-white agent, detergent, disinfectant and color coat agent, etc.
Packing:Net in 25KG plastic woven bags.
Specification:


Grade

Photo

Tech

Na2S2O3·5H2O

99.0% Min

99% Min

Insoluble matter in water

0.01% Max

0.03% Max

Na2S

0.001% Max

0.003% Max

Fe

0.002% Max

0.003% Max

PH value (200g/L solution)

6.5-9.5

6.5-9.5