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Chemical Sampling Information (CSI)
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General Description

Synonyms: N,N-Diphenylaniline

OSHA IMIS Code Number: 2534

Chemical Abstracts Service (CAS) Registry Number: 603-34-9

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: YK2680000; 84891

Chemical Description and Physical Properties:

    molecular formula: C18H15N
    molecular weight: 245.34
    boiling point: 365ºC
Exposure Limits

OSHA Permissible Exposure Limit (PEL):

    General Industry: 0.1 mg/m3

    Construction Industry: 0.1 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 mg/m3 TWA

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:

  • sampling media: Midget Fritted Glass Bubbler containing 15 mL HPLC grade Isopropanol
    maximum volume: 250 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/U
    method reference: 2 (OSHA In-house file)
    method classification: Not Validated

Conditions:

  • column: CN (Conditions for Diphenylamine)
    mobile phase: 60:40 Methanol:Water
    detector wavelength: 280 nm
    detection limit:

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