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Sodium Thiosulfate

Sodium Thiosulfate, 30% – Oil Field Chemicals

Sodium thiosulfate, 30% is commonly used to dechlorinate water.  It will also from soluble complexes with certain heavy metals facilitating their removal from industrial waste effluents.  In the oil and gas industry, sodium or ammonium thiosulfate can be used to improve thermal stability of fluidized polymer suspensions.  Sodium thiosulfate, 30%, potassium thiosulfate, 50%, or ammonium thiosulfate, 60% are standard concentrations of thiosulfate salts available, but can be diluted or mixed together for particular applications.

General Characteristics:

Appearance: Clear, colorless  solution
Chemical Formula: Na2S2O3
Molecular Weight: 158.11
CAS #: 7772-98-7



Standard Specifications: 

Component Specification
Sodium Thiosulfate (as Na2S2O3), wt.%  29.0 – 31.0


Physical Properties:

Component Specification
Specific Gravity, 70° F  1.266 – 1.287




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