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Chemical Sampling Information (CSI)
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General Description

Synonyms: Pyrocatechol

OSHA IMIS Code Number: 0571

Chemical Abstracts Service (CAS) Registry Number: 120-80-9

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: UX1050000; 73250

Chemical Description and Physical Properties:

    solid
Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 ppm, 23 mg/m3 TWA (Skin); Appendix A3 (Confirmed Animal Carcinogen with Unknown Relevance to Humans)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 ppm TWA (Skin)

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans

Health Effects: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Kidney damage (HE3)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: OSHA Versatile Sampler (OVS-7) - 13mm XAD-7 tube (270/140 mg sections, 20/60 mesh) with a Glass Fiber Filter enclosed.
    analytical solvent: Methanol
    maximum volume: 100 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

Conditions: Column: 15m DB-Wax 0.25 film, 0.32 ID Oven: 90°C for 1 min to 220 at 15 deg/min Injector: 220°C Detector: 250 °C

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