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Esseco USA Sodium Thiosulfate Pentahydrate Photo Grade (1NC02R)

Esseco USA Sodium Thiosulfate Pentahydrate Photo Grade (1NC02R) is a large crystaline product that is readily soluble in water.

Chemical Name: Sodium Thiosulfate Pentahydrate

CAS Number: 10102-17-7

Grade: Photo Grade

Synonyms: Disodium thiosulfate pentahydrate, Disodium thiosulphate pentahydrate, Sodium thiosulfate (Na2S2O3) pentahydrate, Sodium thiosulfate pentahydrate (Na2S2O3.5H2O)

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Identification & Functionality

Chemical Family
Base Chemicals Functions
CAS No.
10102-17-7
EC No.
600-156-5
Structure

Esseco USA Sodium Thiosulfate Pentahydrate Photo Grade (1NC02R) - Structure

Applications & Uses

Markets
Uses
  • Chlorine removal - This product is used in water treatment for removing excess of chlorine. It is a large crystaline product that is readily soluble in water.
  • Fixers - This product is used in fixing baths to remove undeveloped silver halide. It is a large crystaline product that is readily soluble in water.
  • Hot Packs - This product is used as an exothermic phase change agent in hot packs. It is a large crystaline product that is readily soluble in water.

Properties

Physical Form
Appearance
Translucent to Colorless Crystals
Specifications
ValueUnitsTest Method / Conditions
Sodium Thiosulfate99.0 - 101.0%
Acidity0.0 - 0.01%
Alkalinity0.0 - 0.015%
Insoluble Matter0.0 - 0.2%
Heavy Metals0.0 - 6.0ppm
Iron0.0 - 10.0ppm
Sodium Sulfide0.0 - 4.0ppm

Regulatory & Compliance