N-Phenyl-p-Phenylenediamine Hydrochloride

N-Phenyl-p-Phenylenediamine Hydrochloride molecular structure
molecular structure · PubChem
AKA: 4-Aminodiphenylamine hydrochloride, 1, 4-Benzenediamine, Monohydrochloride, Eucanine Grey B, Zoba Grey BR, Fourrine Grey B, P-Aminodiphenylamine HCl, Durafur Grey BN, Fouramine Grey A, Futramine Grey B
Allergen Warning
⚠️ PPD (Hair Dye)
Synthetic
Not Clean
On the basis of the data included in this report, the CIR Expert Panel concludes that ... N-Phenyl-p-Phenylenediamine Hydrochloride... safe for use in hair dyes at concentrations up to 1.7% (as the free base).
Formula
C12H13ClN2
Mol. Weight
220.70
Form
Liquid
Functions
Viscosity Controlling
Boosts Collagen
Fights Acne
Supports collagen production
Helps reduce acne
Causing bacteria
Contributes to skin healing
Traditional Use
Salt derivative of a synthetic hair colorant developed in the 20th century. Used in permanent hair dye formulations as a color-developing agent.
EWG
4
CIR
Safe as used
Pregnancy
No
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR