Is 3,3'-Dichlorobenzidine safe for babies and kids?
Context-dependent for kids(Babies-specific data is limited; this page draws from human pregnant context.) Pregnancy alters the metabolism and distribution of 3,3'-Dichlorobenzidine, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.
What is 3,3'-dichlorobenzidine?
The IUPAC name is 4-(4-amino-3-chlorophenyl)-2-chloroaniline.
Also known as: 4-(4-amino-3-chlorophenyl)-2-chloroaniline, 3,3'-Dichlorobiphenyl-4,4'-diamine, Dichlorobenzidine base, 3,3-Dichlorobenzidine.
- IUPAC name
- 4-(4-amino-3-chlorophenyl)-2-chloroaniline
- CAS number
- 91-94-1
- Molecular formula
- C12H10Cl2N2
- Molecular weight
- 253.12 g/mol
- SMILES
- C1=CC(=C(C=C1C2=CC(=C(C=C2)N)Cl)Cl)N
- PubChem CID
- 7070
Risk for babies
Context-dependentPregnancy alters the metabolism and distribution of 3,3'-Dichlorobenzidine, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.
No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.
Risk for pregnant and nursing people
Context-dependentPregnancy alters the metabolism and distribution of 3,3'-Dichlorobenzidine, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.
No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.
Regulatory consensus
12 regulatory and scientific bodies have classified 3,3'-Dichlorobenzidine. The classifications differ — that's the data.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| IARC | 1982 | Group 2B | |
| US EPA | 2000 | probable human carcinogen (Group B2) | |
| EPA CTX / NIOSH | — | potential occupational carcinogen | |
| EPA CTX / IRIS | — | B2 (Probable human carcinogen - based on sufficient evidence of carcinogenicity in animals) | |
| EPA CTX / NTP RoC | — | Reasonably Anticipated to be a Human Carcinogen | |
| EPA CTX / IARC | — | Group 2B - Possibly carcinogenic to humans | |
| EPA CTX / Health Canada | — | Group II: CEPA (probably carcinogenic to humans) | |
| EPA CTX / CalEPA | — | Known human carcinogen | |
| EPA CTX / Genetox | — | Genotoxicity: positive (Ames: positive, 9 positive / 0 negative reports) | |
| EPA CTX / Genetox | — | Genotoxicity: positive (Ames: positive, 9 positive / 0 negative reports) | |
| EPA CTX / Skin-Eye | — | Skin Sensitization: Skin Sens. 1 (score: high) | |
| EPA CTX / Skin-Eye | — | Eye Irritation: Not classified (score: low) |
Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.
Where kids encounter 3,3'-dichlorobenzidine
- Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
- Occupational Environments — Factories, Warehouses, Transportation vehicles
Safer alternatives
Lower-risk approaches that achieve a similar outcome to 3,3'-Dichlorobenzidine:
-
Safer process chemistry; Green chemistry alternatives; Exposure controls
Trade-offs: Requires R&D investment to redesign synthesis routes; may reduce yield or throughput initially; long-term benefits include reduced waste treatment costs, regulatory compliance, and worker safety; 12 Principles of Green Chemistry framework available.Relative cost: 1.2-2×
Frequently asked questions
What products contain 3,3'-dichlorobenzidine?
3,3'-Dichlorobenzidine appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).
Why do regulators disagree about 3,3'-dichlorobenzidine?
3,3'-Dichlorobenzidine has been classified by 12 agencies including IARC, US EPA, EPA CTX / NIOSH, EPA CTX / IRIS, EPA CTX / NTP RoC, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.
See 3,3'-Dichlorobenzidine in the baby app
Look up products containing 3,3'-dichlorobenzidine, compare to alternatives, and explore the full data record.
Open in baby View raw API dataSources (2)
- IARC Monographs Volume 29: Some Industrial Chemicals — 3,3'-Dichlorobenzidine Group 2B; Liver/Zymbal's Gland/Mammary Tumors in Rodents; Benzidine Structural Analog; Azo Pigment Precursor; OSHA 29 CFR 1910.1007 Regulation (1982) — iarc_monograph
- US EPA 3,3'-Dichlorobenzidine: Group B2 Probable Carcinogen; Azo Pigment Yellow/Orange Manufacturing; Reductive Cleavage Consumer Exposure; EU Food Contact Material Restrictions; Children's Products Concern; Sediment Persistence (2000) — regulatory
Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →