Sodium Thiosulfate


Product # 3323
Name Sodium Thiosulfate
Synonyms Sodium hyposulfite
Formula Na2S2O3
Purity Reagent
CAS Number 7772-98-7
Molecular Weight 158.11
Color & Form White solid
Melting Point 52° C (dec.)
Specific Gravity 1.73 gm/ml
Solubility Soluble


Request Pricing
  • For other quantities or purities not listed, please request a quotation. We can offer many items in bulk or custom packaging.
  • All pricing is subject to confirmation at the time the order is placed.


Transportation Information Not a dangerous good

Detailed Safety and Handling Information can be found on our Safety Data Sheet (SDS).

Featured Element: Bismuth

Bismuth is a brittle crystalline which is slightly pinkish in its elemental form.

Learn More

In the News

ProChem owner acquires ChemFree Defoam, LLC.

Learn More