3,3'-Dimethylbenzidine [o-Tolidine]
NIOSH Potential Occupational Carcinogen
Exclamation Mark
Health Hazard
Environment
Recommended safety equipment
Personal protective equipment commonly recommended for the hazard classes shown above.
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Hazard Statements
| Code | Statement | Hazard Class |
|---|---|---|
H302 |
Harmful if swallowed | Acute toxicity, oral |
H341 |
Suspected of causing genetic defects | Germ cell mutagenicity |
H350 |
May cause cancer | Carcinogenicity |
H373 |
May causes damage to organs through prolonged or repeated exposure | Specific target organ toxicity, repeated exposure |
H401 |
Toxic to aquatic life | Hazardous to the aquatic environment, acute hazard |
H411 |
Toxic to aquatic life with long lasting effects | Hazardous to the aquatic environment, long-term hazard |
Precautionary Statements
| Code | Statement |
|---|---|
P203 |
Obtain, read and follow all safety instructions before use. |
P260 |
Do not breathe dust/fume/gas/mist/vapors/spray. |
P264 |
Wash hands [and ...] thoroughly after handling. |
P270 |
Do not eat, drink or smoke when using this product. |
P273 |
Avoid release to the environment. |
P280 |
Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... |
P301+P317 |
IF SWALLOWED: Get medical help. |
P318 |
if exposed or concerned, get medical advice. |
P319 |
Get medical help if you feel unwell. |
P330 |
Rinse mouth. |
P391 |
Collect spillage. |
P405 |
Store locked up. |
P501 |
Dispose of contents/container to ... |
Exposure Limits
| NIOSH REL | Ceiling: 0.02 mg-m3 |
| Skin Notation | Yes — can be absorbed through skin |
Physical Properties
White to reddish crystals or powder.
| Boiling Point | 392°F |
| Flash Point | 471°F |
| Vapor Pressure | 1x10-6 mmHg (est) |
| Specific Gravity | 1 |
Synonyms
4,4'-diamino-3,3'-dimethylbiphenyl; diaminoditolyl; 3,3'-dimethylbenzidine; 3,3'-dimethyl-4,4'-diphenyldiamine; 3,3'-tolidine
Data Sources
- GHS Classification: PubChem CID 8413
- NIOSH REL/IDLH: NIOSH Pocket Guide
Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.
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