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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: D136

Chemical Abstracts Service (CAS) Registry Number: 2602-46-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: QJ6400000; 50651

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC) carcinogenic classification: Benzidine Based Dyes - Group 2A, probably carcinogenic to humans (Technical-Grade)

National Toxicology Program (NTP) carcinogenic classification: Suspect Human Carcinogen

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Glass Fiber Filter (37 mm) without a backup pad
    maximum volume: 100 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UV/VIS
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

Conditions: See Direct Black 38; DL for Direct Blue 6 = 0.45 ng/inj; C/P DBA

Wipe Sampling Method:

  • sampling media: Glass Fiber Filter

Bulk Method:

  • For any dye analysis, a bulk sample of the dye must be sent to the Salt Lake Technical Center. Limit the amount of bulk submitted to one gram or approx. one mL. Protect samples from light and heat.

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