CAS Registry Number

CAS 2814-77-9 — Pigment Red 4

Pigment Red 4 is an organic monoazo pigment used primarily in printing inks, paints, and coatings. Beyond inks, it colors resins, paper and externally applied cosmetics such as lip products, where it is known as D&C Red No. 36. It has the molecular formula C16H10ClN3O3 and a molecular weight of 327.7219. The CAS number is 2814-77-9, it requires ambient storage, and carries no signal word. Molekula supplies Pigment Red 4 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: 1-((2-Chloro-4-nitrophenyl)azo)-2-naphthol · 1-[(2-chloro-4-nitrophenyl)diazenyl]naphthalen-2-ol · 2-Naphthalenol, 1-((2-chloro-4-nitrophenyl)azo)- · Carnelio Red R · CI 12085 · D and C Red No. 36 · D&C Red No. 36 · Flame tones · Flaming Red · Permanent Red R