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Chemical Sampling Information (CSI)
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General Description

Synonyms: ortho-Tolualdehyde; meta-Tolualdehyde; para-Tolualdehyde

OSHA IMIS Code Number: T215 (Changed from T205 to T215 - 3/16/2005)

Chemical Abstracts Service (CAS) Registry Number: 529-20-4 (ortho); 620-23-5 (meta); 104-87-0 (para)

Chemical Description and Physical Properties:

molecular weight: 120.15 (ortho, meta, and para)
specific gravity: 1.039 (ortho), 1.019 (meta and para)
molecular formula: C8H8O
boiling point: 199°C (ortho and meta), 204°C (para)
flash point: 153°F (ortho), 173°F (meta), 176°F

Health Factors

Potential Symptoms: Irritating to eyes, respiratory tract, and mucous membranes

Health Effects: Nausea, vomiting, headaches, cough

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Three coated glass fiber filters (open face) in one cassette, two back-to-back, the third one separated by a spacer. The filters are coated with 2,4-dinitrophenyl hydrazine and phoshporic acid.
    analytical solvent: Acetonitrile
    maximum volume: 3 Liters
    current analytical method: High Performance Liquid Chromatography; HPLC/UL
    method reference: OSHA (In-House File)
    method classification: Not Validated
    note: Keep sample in the dark after sampling.

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