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General Description

  • Synonyms: Diesel Exhaust Component; Coumarone; Cumarone; Benzofuran
  • OSHA IMIS Code Number: B717
  • Chemical Abstracts Service (CAS) Registry Number: 271-89-6
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DF6423800; 15956
  • Chemical Description and Physical Properties:
    • molecular weight: 118.13
    • boiling point: 173°C
    • molecular formula: C8H6O

Health Factors

  • Carcinogenic Classification:
    • International Agency for Research on Cancer (IARC): Group 2B Possibly carcinogenic to humans (Vol 63)
  • Health Effects: Diesel exhaust is a potential carcinogen. U.S. Department of Health and Human Services. NIOSH Current Intelligence Bulletin No. 50, August 1988.

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • XAD-2 tube (80/40 mg sections, 15/50 mesh)
  • analytical solvent: (90:10) Methylene Chloride/ Methanol
  • maximum volume: 96 Liters
  • maximum flow rate: 0.2 L/min
  • current analytical method: High Performance Liquid Chromatography; HPLC/UV
  • method reference: 2 (OSHA In-House file)
  • method classification: Partially Validated

Column: C18 mobile phase: 90:10 Methylene Chloride:Methanol detector wavelength: 254 nm detection limit: 4.88 µg/inj

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