1,4-Diaminobenzene dihydrochloride

Agent Name
1,4-Diaminobenzene dihydrochloride
CAS Number
Major Category
Nitrogen Compounds
1,4-Diaminobenzene dihydrochloride formula graphical representation
p-Phenylenediamine HCl; 1,4-Benzenediamine dihydrochloride; 1,4-Phenylenediamine 2-hydrochloride; 1,4-Phenylenediamine dihydrochloride; 4-Aminoaniline dihydrochloride; C.I. 76061; C.I. Oxidation Base 10A; CI 76061; CI Oxidation Base 10A; Durafur Black RC; Fourrine 64; Fourrine DS; Oxidation Base 10A; Pelagol CD; Pelagol Grey CD; Phenylenediamine dihydrochloride; p-Aminoaniline dihydrochloride; p-Benzenediamine dihydrochloride; p-Diaminobenzene dihydrochloride; p-PD HCl; p-PDA HCl; p-Phenylenediamine dihydrochloride; p-Phenylenediamine hydrochloride; para-Phenylenediamine hydrochloride; [ChemIDplus] UN1673
Amines, Aromatic
White to slightly reddish solid; [ICSC] Off-white crystalline powder; [MSDSonline]
Used as an analytical reagent (milk, blood, hydrogen sulfide, and amyl alcohol), antioxidant, and in photographic developers; Used formerly in hair and eyelash dyes; [HSDB]
An eye irritant; Can be absorbed through skin; Can induce methemoglobinemia; May cause skin sensitization and asthma after prolonged contact; May cause kidney injury; [ICSC] The parent compound has caused allergic dermatitis and eye injury in humans; Emergency treatment: "Paraphenylenediamine"; In sensitized individuals, paraphenylenediamine may cause allergic contact dermatitis following application as a hair dye and asthma following inhalation; Following ingestion, can cause angioneurotic edema, methemoglobinemia, acute tubular necrosis, and hepatotoxicity; An adult died after ingestion of 3 grams of p-phenylenediamine; Another adult who ingested 1800 mg developed angioneurotic edema and acute renal failure; [HSDB] A skin, eye, mucous membrane, and upper respiratory tract irritant; May cause asthma, skin sensitization, liver atrophy, and permanent eye injury; [CAMEO] An eye irritant; May cause skin sensitization; [eChemPortal: ESIS] A mutagen; [RTECS] See "p-Phenylenediamine."
Biomedical References

Exposure Assessment

Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Phenylenediamines."

Adverse Effects

Skin Sensitizer
MetHgb is secondary toxic effect
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases, Processes, and Activities Linked to This Agent


Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure: