Sodium thiosulfate pentahydrate

Na2S2O3.5H2O

M = 248,18 g/mol

EC No. 231-867-5

CAS No. 10102-17-7

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Chemical Grade Definitions:

Pure p.a - High purity analytical reagents. Suitable for laboratory and general use.

Pharm/Food - Acceptable for food, drug or medicinal use. May be used for most laboratory purposes.

Pure - Good quality chemicals. May be used for most laboratory purposes, educational, domestic, craft applications. Not pure enough to be offered for food. 

Technical - Good quality for educational, domestic, handicraft, agricultural applications.  Not pure enough to be offered for food.

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