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Chlorodiphenyl (42% Cl)

General Description

  • Synonyms: Arochlor 1242; Aroclor 1242; Polychlorinated Biphenyl; PCB
  • OSHA IMIS Code Number: 0630
  • Chemical Abstracts Service (CAS) Registry Number: 53469-21-9; 27323-18-8
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TQ1356000; 64474
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN2315 Class 9; 2315 171
  • NIOSH Pocket Guide to Chemical Hazards, Chlorodiphenyl (42% Cl): chemical description, physical properties, potentially hazardous incompatibilities, and more
  • Chemical Description and Physical Properties:
    • colorless to dark brown liquid with a mild hydrocarbon odor
    • molecular weight: 258
    • boiling point: 617 to 691°F
    • vapor pressure: 0.001 mm
    • melting point: -2°F
  • Incompatibilities: Strong oxidizers

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
    • General Industry: 1.0 mg/m3 (Skin)
    • Construction Industry: 1 mg/m3 TWA (Skin)
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 mg/m3 TWA (Skin)
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.001 mg/m3 TWA; Potential Carcinogen

Health Factors

  • Carcinogenic Classification:
  • Potential Symptoms: Irritated eyes; chloracne; liver damage; (carcinogenic)
  • Health Effects: Chloracne/Cumulative lung damage (HE3)
  • Affected Organs: Skin, eyes, liver
  • Additional Information:
    • Occupational Health Guidelines for Chemical Hazards. US Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.
  • Date Last Revised: 01/14/2002

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 Tube (270/140 mg sections, 20/60) with Glass Fiber Filter enclosed
  • maximum volume: 60 Liters
  • maximum flow rate: 1.0 L/min
  • current analytical method: Gas Chromatography; GC/ECD
  • method reference: 2 (OSHA PV2089)
  • method classification: Partially Validated
  • note: Collect a sample of the bulk substance and send to the lab in a separate mailing container at the time the air samples are submitted. Indicate on the sample sheet that a bulk sample has been submitted.
Bulk Method:
  • Limit the amount of bulk submitted to one gram or one mL for oil and 20 g for soil.

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