CAS Registry Number

CAS 1562-90-9 — Celestine Blue (C.I. 51050)

Celestine Blue (C.I. 51050) is a triarylmethane dye used primarily as a pH indicator and in histological staining for biological tissues. It exhibits a color shift from red to blue as the pH increases, making it useful in analytical and medical applications. This chemical has a CAS number of 1562-90-9, with the molecular formula C17H18ClN3O4 and a molecular weight of 363.7955. It can be stored at ambient conditions and carries no signal word for hazard classification. Molekula supplies Celestine Blue from research to bulk quantities with full documentation and ISO 9001:2015 traceability.