DINITROTOLUENE†

Chemical Identification
Chemical Identification
CAS # 25321-14-6
Formula

C₇H₆N₂O₄

Synonyms

2,4-dinitrotoluene; dinitrotoluol; DNT; methyldinitrobenzene [note: various isomers of DNT exist]

Physical Properties
Physical Properties
Physical description Orange-yellow crystalline solid with a characteristic odor.
Boiling point 572°F Molecular weight 182.2
Freezing point/melting point 158°F Vapor pressure 1 mmHg
Flash point 404°F Vapor density 6.3
Specific gravity 1.32 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 1
NFPA reactivity rating 3 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0990
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

Lab modification of sample tube consists of an 8mm GFF disc placed inside tube ahead of first resin bed.

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 Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
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
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

1.5 mg/m³

REL-TWA

1.5 mg/m³

TLV-TWA

0.2 mg/m³ [1993]

PEL-TWA

0.15 ppm (1 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:

See 29 CFR 1910.1000 Table Z-1.

Notes:

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.

Notes:

BEI®

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

50 mg/m³

Carcinogenic classifications: NIOSH-Ca, TLV-A3, EPA-B2 Notes:

Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Dinitrotoluene

NIOSH: Pocket Guide to Chemical Hazards - Dinitrotoluene

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dinitrotoluene. See annual publication for most recent information.

Last Updated Date : 12/28/2020