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N-Phenyl-p-Phenylenediamine HCl
AKA “4-Aminodiphenylamine hydrochloride, 1, 4-Benzenediamine, N-phenyl-, monohydrochloride, Eucanine Grey B, Zoba Grey BR, N-Phenyl-p-phenylenediamine hydrochloride, Fourrine Grey B, p-Aminodiphenylamine HCl, Durafur Grey BN, Fouramine Grey A, Futramine Grey B”
Ingredient
Ingredient Facts
N-phenyl-p-phenylenediamine hcl
AKA: 4-Aminodiphenylamine hydrochloride, 1, 4-Benzenediamine, Monohydrochloride, Eucanine Grey B, Zoba Grey BR, N-Phenyl-p-phenylenediamine hydrochloride, Fourrine Grey B, P-Aminodiphenylamine HCl, Durafur Grey BN, Fouramine Grey A, Futramine Grey B
Ingredient · Hair Dyeing · EWG: 4
Synthetic
Not Clean
N-Phenylbenzene-p-diamine monohydrochloride (CI 76085)
Formula
C12H13ClN2
Mol. Weight
220.70
CAS #
2198-59-6, 56426-15-4
Form
Liquid
See origin →
Functions
Hair Dyeing
Boosts Collagen
Fights Acne
Colors hair
Traditional Use
Hydrochloride salt form of a synthetic hair dye intermediate created in the 20th century. Used in permanent hair color formulations for improved stability.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
Allergen Warning
⚠️ PPD (Hair Dye)
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
Final Report on the Safety Assessment of N-Phenyl-p-Phenylenediamine, N-Phenyl-p-Phenylenediamine Hydrochloride, and N-Phenyl-p-Phenylenediamine Sulfate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
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N-Phenyl-p-Phenylenediamine
European Commission
EU Cosmetic Ingredient Database (CosIng)
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N-Phenyl-p-Phenylenediamine HCl
European Commission
EU Cosmetic Ingredient Database (CosIng)
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N-Phenyl-p-Phenylenediamine Sulfate
European Commission
EU Cosmetic Ingredient Database (CosIng)
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Safety and efficacy of l-histidine monohydrochloride monohydrate produced using Corynebacterium glutamicum KCCM 80179 for all animal species.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Bampidis V, Azimonti G, de Lourdes Bastos M, Christensen H et al.
EFSA journal. European Food Safety Authority, 2019
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Safety and efficacy of l-lysine monohydrochloride and concentrated liquid l-lysine (base) produced by fermentation with Corynebacterium glutamicum KCC
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Bampidis V, Azimonti G, Bastos ML, Christensen H et al.
EFSA journal. European Food Safety Authority, 2020
→
N-Phenyl-p-Phenylenediamine
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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N-Phenyl-p-Phenylenediamine Sulfate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Studies on the skin uptake and efflux kinetics of N-phenyl-p-phenylenediamine: an aromatic amine intermediate.
Khanna SK, Tewari P, Joshi A, Singh GB
International journal of cosmetic science, 1987
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR