2-NITROPROPANE†

Chemical Identification
Chemical Identification
CAS # 79-46-9
Formula

C₃H₇NO₂

Synonyms

dimethylnitromethane; iso-nitropropane; 2-NP; sec-nitropropane

Physical Properties
Physical Properties
Physical description Colorless liquid with a pleasant, fruity odor.
Boiling point 249°F Molecular weight 89.1
Freezing point/melting point -135°F Vapor pressure 13 mmHg
Flash point 75°F Vapor density 3.06
Specific gravity 0.99 Ionization potential 10.71 eV
Lower explosive limit (LEL) 1.6% Upper explosive limit (UEL) 11.0%
NFPA health rating 3 NFPA fire rating 3
NFPA reactivity rating 2 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.) 1941
Sampling group
Sampler/Sampling media XAD-4 tube (80/40 mg) [SKC 226-93]
Sampling time*
Sampling volume (TWA)*

4 L

Sampling flow rate (TWA)*
 

0.1 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments GC-FID
Method reference OSHA 46 (fully validated)
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 Organic vapor analyzer Infrared spectrophotometer
Model/Type Miran 1A & 1B
Sampling information
(see manufacturer instructions)
2.3 ppm@11.8 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
 

25 ppm (90 mg/m³)

REL-TWA
 

 

TLV-TWA
 

10 ppm [1992]

PEL-TWA
 

10 ppm (35 mg/m³)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Notes:
 

See 29 CFR 1910.1000 Table Z-1

Notes:
 

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION (LOQ 1.4 ppm). See Appendix A, NIOSH Potential Occupational Carcinogens.

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

100 ppm

Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A3 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 - 2-Nitropropane

NIOSH: Pocket Guide to Chemical Hazards - 2-Nitropropane

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 2-Nitropropane. See annual publication for most recent information.

Last Updated Date : 12/15/2020