CAS Registry Number

CAS 569-61-9 — Pararosaniline hydrochloride

Pararosaniline hydrochloride is a synthetic triarylmethane dye widely used in biological staining, pH indicators, and analytical chemistry for its vibrant red coloration. It serves as a key reagent in microscopy, particularly in the preparation of histological slides, and functions as a sensitive indicator in titrations. This chemical has a CAS number of 569-61-9, a molecular formula of C19H18N3Cl, and a molecular weight of 323.82 g/mol. It should be stored at ambient conditions and handled with caution, as it carries a signal word of "Danger." Molekula supplies Pararosaniline hydrochloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.