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Benzyl Chloride

General Description

  • Synonyms: alpha-Chlorotoluene; Benzylchloride anhydrous; Benzylchloride, stabilized
  • OSHA IMIS Code Number: 0340
  • Chemical Abstracts Service (CAS) Registry Number: 100-44-7
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: XS8925000; 82982
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN1738 156 Poison, Corrosive
  • Chemical Description and Physical Properties:
    • Colorless to slightly yellow liquid with a pungent, aromatic, irritating odor
    • molecular weight: 127
    • boiling point: 354°F
    • vapor pressure: 0.9 mm
    • melting point: -39°F
  • Incompatibilities: Active metals: copper, aluminum, magnesium, iron, zinc, tin, strong oxidizers

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
    • General Industry: 1 ppm, 5 mg/m3
    • Construction Industry: 1 ppm, 5 mg/m3 TWA
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 ppm, 5.2 mg/m3 TWA; Appendix A3 (Confirmed Animal Carcinogen with Unknown Relevance to Humans)
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1 ppm Ceiling (15 min)

Health Factors

  • Carcinogenic Classification:
    • International Agency for Research on Cancer (IARC): alpha-Chlorinated Toluenes - Group 2B, possibly carcinogenic to humans
  • Potential Symptoms: Eye, nose irritation; weakness; irritability; headaches; skin eruption; pulmonary edema
  • Health Effects: Suspect Carcinogen (HE2); Acute lung edema (HE11); Irritation-Eyes, Nose, Throat, Skin---Marked (HE14)
  • Affected Organs: Eyes, respiratory system, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Charcoal Tube (100/50 mg sections, 20/40 mesh)
  • maximum volume: 10 Liters
  • maximum flow rate: 0.2 L/min
  • current analytical method: Gas Chromatography; GC/FID
  • analytical solvent: Carbon disulfide
  • method reference: 1 (NIOSH 1003 (PDF))
  • sampling and analytical error: 0.16
  • method classification: Partially Validated
Secondary Laboratory Sampling/Analytical Method (SAM2):
  • Detector Tube
  • company: Gastec
  • part #: 132L
  • range: 0.5-25 ppm
  • classification: Mfg
  • Instrumentation
  • company: Infrared Spectrophotometer
  • part #: MIRAN 1A & 1B
  • range: 2.5 ppm @ 9.4 µm
  • classification: Mfg

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