Fast red S Conc. sodium salt of 4 sulfo-alpha-naphtalene azo-B-naphtol
color index 176 (%3 egg treated solution)


PR176 Benzimidazolone Carmine Alizarin Crimson (hue) [LK];
Benzimidazolone Carmine;
Benzimidazolone HF3C;
Carmine (hue) [DS.w | RT.o.wo];
Carmine Lake (hue) [CH];
C.I. Pigment Red 176;
Fast Carmine;
Mayan Carmine (hue) [GU];
Permanent Alizarin Crimson [WN.g];
Permanent Carmine HF3C;
Pigment Red 176;
Pigment Red HF 3C;
Purple-Red;
Rose Madder (hue) [AS]; 12515 Monoazo; Benzimidazolone;

CAS 12225-06-8 Bluish red;

† Fades, Hue shift towards blue -