Lapse in Appropriations
For workplace safety and health, please call 800-321-6742; for mine safety and health, please call 800-746-1553; for Job Corps, please call 800-733-5627 and for Wage and Hour, please call 866-487-9243 (866-4-US-WAGE). This website is currently not being updated due to the suspension of Federal government services. The last update to the site was 10/1/2025. Updates to the site will start again when the Federal government resumes operations.
2,4,6-TRINITROTOLUENE†
| CAS # | 118-96-7 |
|---|---|
| Formula |
C₇H₅N₃O₆ |
| Synonyms |
1-methyl-2,4,6-trinitrobenzene; TNT; trinitrotoluene; sym-trinitrotoluene; trinitrotoluol |
| Physical description | Colorless to pale-yellow, odorless solid or crushed flakes. | ||
|---|---|---|---|
| Boiling point | 464°F (explodes) | Molecular weight | 227.15 |
| Freezing point/melting point | 177.6°F | Vapor pressure | 0.0002 mmHg |
| Flash point | explodes | Vapor density | |
| Specific gravity | 1.65 | Ionization potential | 10.59 eV |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 2530 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | OSHA versatile sampler (OVS-Tenax®) - 13 mm Tenax® tube (140/70 mg) with GFF enclosed [SKC 226-56] |
| Sampling time* | 60 min |
| Sampling volume (TWA)* | 60 L |
| Sampling flow rate (TWA)* | 1 L/min |
| Sampling volume (STEL/Peak/C)* | |
| Sampling flow rate (STEL/Peak/C)* | |
| Analytical method instruments | GC-TEA |
| Method reference | OSHA 44 (fully validated) |
| Notes | The air sampling pump must be certified by NIOSH and MSHA as safe for use in coal mines. |
| Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
1.5 mg/m³ |
REL-TWA |
0.5 mg/m³ |
TLV-TWA |
0.1 mg/m³ (inhalable fraction and vapor) [1984] |
PEL-TWA |
0.5 mg/m³ |
| PEL-STEL | REL-STEL | TLV-STEL |
|
PEL-STEL |
|
||
| PEL-C | REL-C |
|
TLV-C |
|
PEL-C |
|
|
| Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
| Notes: |
Notes:
|
Notes:
BEI® |
Notes:
|
||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-3, EPA-C |
Notes:
|
||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
|
|||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - TNT, wetted with not less than 30% water NIOSH: Pocket Guide to Chemical Hazards - 2,4,6-Trinitrotoluene Literature References
|
Last Updated Date : 12/15/2020