CAS number: 131113
NIOSH REL: 5 mg/m3 TWA
Current OSHA PEL: 5 mg/m3 TWA
1989 OSHA PEL: Same as current PEL
1993-1994 ACGIH TLV: 5 mg/m3 TWA
Description of Substance: Colorless, oily liquid with a slight, aromatic odor.
LEL(@358 F): 0.9% (10% LEL(@358 F), 11,300 mg/m3)
Original (SCP) IDLH: 9,300 mg/m3
Basis for original (SCP) IDLH: The chosen IDLH is based on the statement by Spector  that 9,300 mg/m3 was a lethal concentration for the cat [Eller 1937].
Short-term exposure guidelines: None developed
ACUTE TOXICITY DATA
Lethal concentration data:
Lethal dose data:
Human data: None relevant for use in determining the revised IDLH.
|Revised IDLH: 2,000 mg/m3
Basis for revised IDLH: The revised IDLH for dimethylphthalate is 2,000 mg/m3 based on acute inhalation toxicity data in animals [Eller 1937]. [Note: Due to its low volatility, this concentration could only be reached at elevated temperatures or if the liquid droplets become airborne as in a mist.]
1. Eller . Doctoral dissertation. Wurzburg, Germany: Julius Maximillian University (in German). [From Spector WS, ed. . Handbook of toxicology. Vol. I. Acute toxicities. Philadelphia, PA: W.B. Saunders Company, pp. 334335.]
2. Lehman AJ . Insect repellents. Q Bulletin Assoc Food Drug Off U.S. 19:8790.
3. Spector WS, ed. . Handbook of toxicology. Vol. I. Acute toxicities. Philadelphia, PA: W.B. Saunders Company, pp. 334335.
4. Timofeevskaia LA, Ivanova NI, Balinina ES . Toxicology of ophthalic acid esters and hygienic reglamentation. Gig Tr Prof Zabol 24(3):2527 (in Russian).
5. Woodard G, Hagan EC . Toxicological investigations of
compounds proposed for use as insect repellents. B. Acute
oral toxicity. J Pharmacol Exp Ther 93:2639.
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