CHLOROPICRIN (NITROTRICHLOROMETHANE)†

Chemical Identification
Chemical Identification
CAS # 76-06-2
Formula

CCl₃NO₂

Synonyms

nitrochloroform; nitrotrichloromethane; trichloronitromethane

Physical Properties
Physical Properties
Physical description Colorless to faint-yellow, oily liquid with an intensely irritating odor.
Boiling point 234°F Molecular weight 164.4
Freezing point/melting point -93°F Vapor pressure 18 mmHg
Flash point Vapor density 5.7
Specific gravity 1.66 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 4 NFPA fire rating 0
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.) 0675
Sampling group
Sampler/Sampling media 2 XAD-4 tubes in series (80/40 mg) [SKC 226-93]
Sampling time*

25 min

Sampling volume (TWA)*

5 L

Sampling flow rate (TWA)*

0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-ECD
Method reference OSHA PV2103 (partially validated)
Notes

Samples should be protected from light after sampling by covering them with the OSHA-21 form, or an opaque tape, such as masking tape. 

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

Available

On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube Infrared spectrophotometer
Model/Type Gastec 134 Miran 1A & 1B
Sampling information
(see manufacturer instructions)
1-60 ppm range 0.1 ppm@11.5 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

0.1 ppm (0.7 mg/m³)

REL-TWA

0.1 ppm (0.7 mg/m³)

TLV-TWA

0.1 ppm [1990]

PEL-TWA

0.1 ppm (0.7 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: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

2 ppm

Carcinogenic classifications: TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

0.075 ppm/0.15 ppm/1.5 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chloropicrin

NIOSH: Pocket Guide to Chemical Hazards - Chloropicrin

Literature References

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

Last Updated Date : 12/21/2020