Basic Brown 17

Basic Brown 17 1
Basic Brown 17 2
AKA: CI 12251, JAROCOL SIENNA BROWN, ARIANOR SIENNA BROWN 306001, 2-Naphthalenaminium, 8-(2-(4-amino-3-nitrophenyl)diazenyl)-7-hydroxy-N, Chloride (1:1), 8-((4-amino-3-nitrophenyl)azo)-7-hydroxy-N, Chloride, 8-((4-Amino-3-nitrophenyl)diazenyl)-7-hydroxy-N, N-trimethylnaphthalen-2-aminium Chloride, Jaracol Sienna
Synthetic
Not Clean
[8-[(4-Amino-3-nitrophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride (CI 12251)
Formula
C19H20ClN5O3
Mol. Weight
401.80
CAS #
68391-32-2
Functions
Hair Dyeing
Colors Hair
Traditional Use
A synthetic azo dye developed in the 20th century for coloring cosmetics and textiles. Part of the 'Basic' dye family created to replace natural colorants with more stable, consistent synthetic alternatives.
EWG
5
CIR
Safe as used
Pregnancy
—
CIR Safety Findings
Not a Sensitizer
ewg-5
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Skin Types
●all-skin-types
Best For
General
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR