Isopropyl glycidyl ether
Immediately Dangerous to Life or Health Concentrations (IDLH)
CAS number: 4016–14–2
NIOSH REL: 50 ppm (240 mg/m3) 15-minute CEILING
Current OSHA PEL: 50 ppm (240 mg/m3) TWA
1989 OSHA PEL: 50 ppm (240 mg/m3) TWA, 75 ppm (360 mg/m3) STEL
1993-1994 ACGIH TLV: 50 ppm (238 mg/m3) TWA, 75 ppm (356 mg/m3) STEL
Description of substance: Colorless liquid.
LEL: . . Unknown
Original (SCP) IDLH: 1,000 ppm
Basis for original (SCP) IDLH: The chosen IDLH is based on the mouse 4-hour LC50 of 1,500 ppm and the rat 8-hour LC50 of 1,100 ppm [Hine et al. 1956 cited by Patty 1963].
Short-term exposure guidelines: None developed
ACUTE TOXICITY DATA:
Lethal concentration data:
|Time||Adjusted 0.5-hr |
|Hine et al. 1956 |
Hine et al. 1956
|4 hr |
|3,000 ppm (2.0) |
2,750 ppm (2.5)
|300 ppm |
Human data: Workers exposed to 400 ppm have suffered irritation of the eyes and respiratory tract [Hine et al. 1956].
|Revised IDLH: 400 ppm |
Basis for revised IDLH: The revised IDLH for isopropyl glycidyl ether is 400 ppm based on acute inhalation toxicity data in workers [Hine et al. 1956]. This may be a conservative value due to the lack of relevant acute toxicity data for workers exposed to concentrations above 400 ppm.
1. Hine CH, Kodama JK, Wellington JS, Dunlap MK, Anderson HH . The toxicology of glycidol and some glycidyl ethers. AMA Arch Ind Health 14:250-264.
2. Patty FA, ed. . Industrial hygiene and toxicology. 2nd rev. ed. Vol. II. Toxicology. New York, NY: Interscience Publishers, Inc., p. 1638.
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