Organic reference standard, Patent Blue V calcium salt, analytical standard, Supelco®
Supplier: Merck
74748-25MG
74748-25MGEA
136
GBP
74748-25MG
Organic reference standard, Patent Blue V calcium salt, analytical standard, Supelco®
Standards
Organic Standards
Certifications: Literature for Patent Blue Violet discusses two dyes which are very similar, Colour Index Numbers 42045 and 42051. Structurally they differ with regard to the substituents on one of the aromatic rings. C.I. 42045 is 2,4-disulpho-substituted while C.I. 42051 is 2,4-disulpho-5-hydroxy-substituted. This is the latter form.
Packaging: Bottomless glass bottle. Contents are inside inserted fused cone.
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