Picramic Acid

Picramic Acid

AKA “6-dinitrophenol, Fourrine 4R, Fourrine 93, Furro 4R, Acide picramique, Oxidation Base 21, Zoba 4R, 4-Dinitro-6-aminophenol”

Synthetic

Ingredient Facts

Picramic acid

AKA: 6-dinitrophenol, Fourrine 4R, Fourrine 93, Furro 4R, Acide picramique, Oxidation Base 21, Zoba 4R, 4-Dinitro-6-aminophenol

Synthetic · Hair Dyeing · EWG: 4

Synthetic

Clean

A synthetic colorant used in hair dyes to create rich, long-lasting color. It's one of several dyes that work together to achieve vibrant results on hair.

Solubility less than 1 mg/mL at 68.9 °F (NTP, 1992)

Formula

C6H5N3O5

Mol. Weight

199.12

CAS #

96-91-3

Form

Liquid

State

2-amino-4,6-dinitrophenol, wetted with not less than 20% water appears as dark red needles or prisms. Red crystals. Water insoluble. Explosive in the dry state but desensitized by wetting. Easily igni

See origin →

Functions

Hair Dyeing

Colors Hair

Traditional Use

A synthetic organic compound developed in the 19th century, originally used in dye and pigment production. Its use in cosmetics is modern and relates to its potential preservative or coloring properties.