Basic Brown 17

Basic Brown 17 1
molecular structure · PubChem CID 135515517
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
OriginDerived from azo dye chemical compounds synthesized through organic chemistry processes. Produced by coupling diazotized aromatic amines with phenolic or naphtholic coupling agents.
[8-[(4-Amino-3-nitrophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride (CI 12251)
Formula
C19H20ClN5O3
Mol. Weight
401.80
CAS #
68391-32-2
Skin Types
●all-skin-types
Best For
General
Functions
Hair Dyeing
Colors Hair
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.
EWG
5
CIR
Safe as used
Pregnancy
—
CIR Safety Findings
Mixed Skin Irritation Results
3 studies / 1 mixed / 2 not irritating / reactions slight (CIR 811)
Mixed Sensitization Results
3 studies / 1 mixed / 2 not sensitizing / plus 1 case report (CIR 811)
Mixed Eye Irritation Results
3 studies / 1 mixed / 2 not irritating (CIR 811)
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR