AKA: HC Blue 1, 2784-94-3, HC Blue Number 1, NCI-C04159, 2'-((4-(Methylamino)-3-nitrophenyl)imino)diethanol, 1-Methylamino-2-nitro-4-(bis-2-hydroxyethyl)aminobenzene, Ethanol
Synthetic
Clean
1-[(2',3'-Dihydroxypropyl)amino]-2-nitro-4-[methyl-(2'-hydroxyethyl)amino]benzene hydrochloride and other salts
Solubility less than 0.1 mg/mL at 64 °F (NTP, 1992)
Formula
C11H17N3O4
Mol. Weight
255.27
CAS #
173994-75-7, 102767-27-1
Form
Powder
State
Hc blue 1 appears as dark blue microcrystals or dark purple powder. (NTP, 1992)
Functions
Hair Dyeing
Colors Hair
Traditional Use
HC Blue No. 1 is a synthetic aromatic amide dye developed in the 20th century specifically for hair coloring applications. It was created to provide a direct dye option for semi-permanent and permanent hair color formulations.