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Dibutyl phosphate
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. |