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Chemical Sampling Information (CSI)
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General Description

Synonyms: Diesel Exhaust Component; 2-Methoxybenzaldehyde

OSHA IMIS Code Number: A517

Chemical Abstracts Service (CAS) Registry Number: 123-11-5

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: BZ2625000; 8490

Chemical Description and Physical Properties:

molecular weight: 136.14
boiling point: 243°C
melting point: 75°C
Health Factors

Health Effects: Diesel exhaust is a potential carcinogen. U.S. Dept. of Health and Human Services. NIOSH Current Intelligence Bulletin No. 50, August 1988.

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: XAD-2 tube (80/40 mg sections, 15/50 mesh)
    analytical solvent: (90:10) Methylene Chloride/ Methanol
    maximum volume: 96 Liters
    maximum flow rate: 0.2 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UL59.
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

Conditions:

  • column: C18
    mobile phase: 76:24:0.1 Water:Acetonitrile:H3PO4
    wavelength: 254 nm
    detection limit: 3.8 ng

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