CAS Registry Number
CAS 63451-35-4 — Hydroxynaphthol blue
CAS 63451-35-4
C20H11N2Na3O11S3
MW 620.47
Hydroxynaphthol blue is a sodium salt dye used as a metal ion indicator in complexometric titrations, particularly for calcium and magnesium. It appears as a dark blue crystalline powder. CAS: 63451-35-4, Molecular Formula: C20H11N2Na3O11S3, Molecular Weight: 620.47 g/mol. Store at ambient temperature. Signal word: Danger. Molekula supplies Hydroxynaphthol blue from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
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