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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: D156

Chemical Abstracts Service (CAS) Registry Number: 53-70-3

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: HN2625000; 30488

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 2A, probably carcinogenic to humans

National Toxicology Program (NTP): Suspect Human Carcinogen
Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Glass Fiber Filter (37 mm)
    analytical solvent: Benzene
    maximum volume: 960 Liters
    maximum flow rate: 2 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UV/FLU
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated
    note: Immediately after sampling, transfer filter to glass scintillation vial and seal with Teflon-lined cap.

Bulk Method:

  • Limit the amount of bulk submitted to one gram or one mL.

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