Sodium Thiosulfate Pentahydrate, ACS Grade

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Sodium Thiosulfate Pentahydrate, ACS Grade

Name: Sodium Thiosulfate Pentahydrate, ACS Grade
Brand: Post Apple
SKU: C7810-500g
Price: 46.2 USD
Availability: InStock

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Description

About Sodium Thiosulfate Pentahydrate, ACS Grade

Sodium Thiosulfate Pentahydrate, also known as Disodium Sulfurothioate Pentahydrate, and Sodium Hyposulfite Pentahydrate is a hydrate of Sodium Thiosulfate with 5 mol eq. of Water. having the chemical formula H₁₀Na₂O₈S₂ or Na₂S₂O₃-5H₂O. It appears as colorless to whitehygroscopic crystals, chunks, or crystalline powder with no odor. It is sparingly soluble in Water and insoluble in Alcohol at ambient conditions. When heated to around 300 o C, it undergoes decomposition emitting highly toxic fumes of Disodium Oxide and Sulfur Oxides. Commercially, it is produced by reacting by-product liquid of Sodium Sulfide synthesis with Sulfur Dioxide. An ACS Grade reagent is a chemical that meets the purity requirements of the American Chemical Society. For dependable, consistent, and repeatable findings, ACS Grade reagents can be utilized in high-quality research labs.

COMMON USES AND APPLICATIONS

Reagent
Chemical precursor
Volumetric analysis

INDUSTRIES

Photographic processing
Hand warmers/heating pads
Refining of gold

PRODUCT INFORMATION

CAS RN

10102-17-7

Molecular Formula

Na₂S₂O₃-5H₂O

Molecular Weight

248.19

Assay

99.5-101.0%

pH of a 5% solution @ 25°C

6.0-8.4

Insoluble Matter

0.005%

Nitrogen Compounds

0.002%

Sulfate and Sulfite (as SO4)

0.1%

Sulfide (as S)

To Pass Test (limit about 1 ppm)

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