Eriochrome Black T



C20H12N3NaO7S

M = 461,38 g/mol

EC 217-250-3

CAS 1787-61-7

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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.