1,2-Diphenylhydrazine
Health Effects
EPA's Integrated Risk Information System classifies 1,2-diphenylhydrazine as a Group B2, probable human carcinogen. EPA's stated basis: "Positive results of studies in both rats and mice form the basis for this classification. Two apparently negative studies lack information on compound purity, experimental design, and statistical treatment."
Source: EPA IRIS — Integrated Risk Information System (IRIS) (retrieved 2026-07-27)
Common Sources
- Discharge from chemical manufacturing — used in the production of benzidine dyes and as a chemical intermediate
- Industrial wastewater and hazardous waste sites
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Contaminant Type
1,2-Diphenylhydrazine is classified as a SVOCs contaminant.
Related SVOCs Contaminants
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