DINITROBENZENES, ALL ISOMERS†

Chemical Identification
Chemical Identification
CAS # 25154-54-5
Formula

C₆H₄N₂O₄

Synonyms

(o-, m-, p-)dinitrobenzene; (1,2-, 1,3-, 1,4-)dinitrobenzene

Physical Properties
Physical Properties
Physical description Pale-white or yellow crystalline solid.
Boiling point See individual isomers for properties Molecular weight
Freezing point/melting point Vapor pressure
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 1
NFPA reactivity rating 4 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.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
Notes
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 Detector tube Detector tube Detector tubes Detector tubes Infrared spectrophotometers
Model/Type Gastec 1L Gastec 1LA Dräger - 6733051, CH25601, CH20601 Matheson-Kitagawa 8014-100, 8014-106S, 8014-106SA Miran 1A & 1B; Miran 103
Sampling information
(see manufacturer instructions)
10-2000 ppm range 8-1000 ppm range 6733051: 2-300 ppm range; CH25601: 5-700 ppm range; CH20601: 10-3000 ppm range 100: 5-1000 ppm range; 106S: 10-250 ppm range; 106SA: 5-1000 ppm range Miran 1A & 1B: 2.1 ppm@4.7 µm; Miran 103: 0-100 ppm@4.61 µm
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 mg/m³

REL-TWA

1 mg/m³

TLV-TWA

0.15 ppm (inhalable fraction and vapor) [1979]

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: Notes:

BEI®

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

50 mg/m³

Carcinogenic classifications: EPA-D Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Dinitrobenzenes

NIOSH: Pocket Guide to Chemical Hazards - o-Dinitrobenzene

Literature References

  • NIOSH: Pocket Guide to Chemical Hazards - m-Dinitrobenzene, p-Dinitrobenzene.
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dinitrobenzene, all isomers. See annual publication for most recent information.

Last Updated Date : 12/28/2020