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Chloropicrin

General Description

  • Synonyms: Nitrotrichloromethane; Trichloronitromethane; Nitrochloroform
  • OSHA IMIS Code Number: 0675
  • Chemical Abstracts Service (CAS) Registry Number: 76-06-2
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: PB6300000; 48193
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN1580 Poison 154
  • Chemical Description and Physical Properties:
    • Colorless, oily liquid with a sharp, penetrating odor that causes tears
    • molecular weight: 164
    • vapor pressure: 20 mm
    • boiling point: 234°F
    • melting point: -83°F
  • Incompatibilities: Strong oxidizers

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
    • General Industry: 0.1 ppm, 0.7 mg/m3
    • Construction Industry: 0.1 ppm, 0.7 mg/m3 TWA
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 ppm, 0.67 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcingen)
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 ppm TWA

Health Factors

Potential Symptoms: Eye irritation, lacrimation; coughing, pulmonary edema; nausea, vomiting; skin irritation

Health Effects: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Acute lung damage/edema (HE11)

Affected Organs: Respiratory system, skin, eyes

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Two XAD-4 Tubes in Series (80/40 mg sections)
  • analytical solvent: Ethyl Acetate
  • maximum volume: 5 Liters
  • maximum flow rate: 0.2 L/min
  • current analytical method: Gas Chromatography; GC/ECDREF 2 (OSHA In-House File)
  • method classification: Partially Validated
Secondary Laboratory Sampling/Analytical Method (SAM2):
  • Detector Tube
  • company: Gastec
  • part #: 134
  • range: 1-60 ppm
  • class: Mfg
  • Instrumentation
  • company: Infrared Spectrophotometer
  • part #: MIRAN 1A & 1B
  • range: 0.1 ppm @ 11.5 um
  • class: Mfg
Conditions:

Column: 60m RTX-5 1u film 0.32 mm ID Temp(deg C): Injector-140; Oven-100; Detector-300

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