1,2,4-Trichlorobenzene
NIOSH Potential Occupational Carcinogen
Exclamation Mark
Health Hazard
Environment
Hazard Statements
| Code | Statement | Hazard Class |
|---|---|---|
H302 |
Harmful if swallowed | Acute toxicity, oral |
H335 |
May cause respiratory irritation | Specific target organ toxicity, single exposure; Respiratory tract irritation |
H336 |
May cause drowsiness or dizziness | Specific target organ toxicity, single exposure; Narcotic effects |
H351 |
Suspected of causing cancer | Carcinogenicity |
H373 |
May causes damage to organs through prolonged or repeated exposure | Specific target organ toxicity, repeated exposure |
H400 |
Very toxic to aquatic life | Hazardous to the aquatic environment, acute hazard |
H410 |
Very 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. |
P261 |
Avoid breathing dust/fume/gas/mist/vapors/spray. |
P264 |
Wash hands [and ...] thoroughly after handling. |
P270 |
Do not eat, drink or smoke when using this product. |
P271 |
Use only outdoors or in a well-ventilated area. |
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. |
P304+P340 |
IF INHALED: Remove person to fresh air and keep comfortable for breathing. |
P318 |
if exposed or concerned, get medical advice. |
P319 |
Get medical help if you feel unwell. |
P330 |
Rinse mouth. |
P391 |
Collect spillage. |
P403+P233 |
Store in a well-ventilated place. Keep container tightly closed. |
P405 |
Store locked up. |
P501 |
Dispose of contents/container to ... |
Exposure Limits
| NIOSH REL | Ceiling: 5 ppm |
| Skin Notation | Yes — can be absorbed through skin |
Physical Properties
Colorless liquid or crystalline solid (below 63°F) with an aromatic odor.
| Boiling Point | 416°F |
| Flash Point | 222°F |
| Vapor Pressure | 1 mmHg |
| Specific Gravity | 1.45 |
NFPA 704 Diamond
1
2
0
Health
Fire
Reactivity
Target Organs
no REL after 1988 update (but not in Appendix G NPG)
Synonyms
unsym-trichlorobenzene; 1,2,4-trichlorobenzol
Data Sources
- GHS Classification: PubChem CID 13
- 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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