CAS Registry Number

CAS 554-73-4 — Tropaeolin OO

Tropaeolin OO is a sodium salt of a synthetic azo dye used primarily as a pH indicator and in analytical chemistry for detecting certain metal ions. It appears as a red crystalline powder with a molecular formula of C18H14N3O3SNa and a molecular weight of 375.38 g/mol. It is stable at ambient temperatures and should be handled with care due to its warning signal word. Molekula supplies Tropaeolin OO from research to bulk quantities with full documentation and ISO 9001:2015 traceability.