Ethyl red indicator (4.5-6.5) (CAS 76058-33-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C17H19N3O2. Molecular weight: 297.35 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
Molecular Formula
C17H19N3O2
Molecular Weight
297.35 g/mol
Appearance
Pale yellow to yellow crystalline powder
Purity
97%+
Storage
Store at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)
Soluble in DMSO, DMF, methanol
Stability
May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening