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Chemical Sampling Information (CSI)
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General Description

Synonyms: 3,3'-Dimethoxybenzidine

OSHA IMIS Code Number: 0873

Chemical Abstracts Service (CAS) Registry Number: 119-90-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DD0875000; 14665

NIOSH Pocket Guide to Chemical Hazards, o-Dianisidine: chemical description, physical properties, potentially hazardous incompatibilities, and more

Health Factors

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

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Coated Glass Fiber Filters (37 mm) in 3 piece cassette. Coating is Sulfuric Acid.
    maximum volume: 100 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/ECD
    method reference: 2 (OSHA 71)
    sampling and analytical error: 0.13
    method classification: Fully Validated
    note: Within ten hours after sampling, transfer filter to glass vial containing 2 mL deionized water. Sample must be shipped and stored at 0°C or colder. Analyze as soon as possible. Filters may be obtained by OSHA personnel from the Salt Lake Technical Center.

Conditions: C18 column; 55% methanol 45% water; 1 mL/min; UV det: 313, 280; Fluor. Exc. 267; Em 389; Retention time, 14 min; DL 5 ng/inj.; C/P DBA

Wipe Sampling Method:

  • sampling media: Glass Fiber Filter

Bulk Method:

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

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