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        Dibutyl phosphate
          Dibutyl phosphate
        Print
          May 1994
          Immediately Dangerous to Life or Health Concentrations (IDLH)
        CAS number: 107–66–4
        NIOSH REL: 1 ppm (5 mg/m3) TWA, 2 ppm (10 mg/m3) STEL
        Current OSHA PEL: 1 ppm (5 mg/m3) TWA
        1989 OSHA PEL: 1 ppm (5 mg/m3) TWA, 2 ppm (10 mg/m3) STEL
        1993-1994 ACGIH TLV: 1 ppm (8.6 mg/m3) TWA, 2 ppm (17 mg/m3) STEL
        Description of Substance: Pale-amber, odorless liquid.
        LEL:. . Unknown
        Original (SCP) IDLH: 125 ppm
        Basis for original (SCP) IDLH: No data on acute inhalation toxicity are available on which to base an IDLH for dibutyl phosphate. Therefore, the chosen IDLH is based on an analogy with tributyl phosphate which has an IDLH of 125 ppm.
        Short-term exposure guidelines: None developed
        ACUTE TOXICITY DATA
        Animal or human data: None relevant for use in determining the revised IDLH.
          Revised IDLH: 30 ppmBasis for revised IDLH: Due to the lack of relevant acute toxicity data, the revised IDLH for dibutyl phosphate is 30 ppm based on an analogy to tributyl phosphate which has a revised IDLH of 30 ppm.
        Last Reviewed: December 4, 2014
          Source: National Institute for Occupational Safety and Health
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