Where It Comes From
Manufactured for dye intermediates, epoxy curing agents, and aramid fibers; can be released to air and wastewater from industrial use [1].
How You Are Exposed
Breathing workplace dust or vapors; skin contact during production or use; touching uncured materials; living near facilities with releases [1][2].
Why It Matters
Causes skin/eye irritation and allergic contact dermatitis; inhalation can irritate nose/throat; repeated exposure may lead to sensitization (stronger reactions at lower doses) [2]. EPA/IARC: not classifiable for cancer [1][3].
Who Is at Risk
Workers in dye, resin, and aramid-fiber manufacturing or labs; people already sensitized to aromatic amines [1][2].
How to Lower Your Exposure
Use chemical-resistant gloves, goggles, and protective clothing; ensure local exhaust ventilation; avoid skin contact and wash after handling; follow workplace exposure limits; if sensitized, avoid further exposure [2].
References
- [1]U.S. EPA. 1,3-Benzenediamine (m-Phenylenediamine) Hazard Summary.
- [2]CDC/NIOSH. Pocket Guide to Chemical Hazards: m-Phenylenediamine (CAS 108-45-2).
- [3]IARC Monographs. Evaluation of carcinogenic risks for phenylenediamines: m-Phenylenediamine, not classifiable (Group 3).