CAS number: 107-02-8
NIOSH REL: 0.1 ppm (0.25 mg/m3) TWA, 0.3 ppm (0.8 mg/m3) STEL
Current OSHA PEL: 0.1 ppm (0.25 mg/m3) TWA
1989 OSHA PEL: 0.1 ppm (0.25 mg/m3) TWA, 0.3 ppm (0.8 mg/m3) STEL
1993-1994 ACGIH TLV: 0.1 ppm (0.23 mg/m3) TWA, 0.3 ppm (0.67 mg/m3) STEL
Description of substance: Colorless or yellow liquid with a piercing, disagreeable odor.
LEL: 2.8% (10% LEL, 2,800 ppm)
Original (SCP) IDLH: 5 ppm
Basis for original (SCP) IDLH: The chosen IDLH is based on the statement by ACGIH [1971] that 5.5 ppm results in intense irritation and 10 ppm or more is lethal in a short time [Henderson and Haggard 1943]. According to MCA [1961], the irritation properties of acrolein are clearly evident at 1 ppm. ACGIH [1971] reported that 1 of 6 rats died after being exposed to 8 ppm for 4 hours and all died from exposure to 16 ppm [Smyth 1956].
Existing short-term exposure: 1989 American Industrial Hygiene Association guidelines
(AIHA) Emergency Response Planning Guidelines
(ERPGs):
ERPG-1: 0.1 ppm (60-minute)
ERPG-2: 0.5 ppm (60-minute)
ERPG-3: 3 ppm (60-minute)
National Research Council [NRC 1984]
Emergency Exposure Guidance Levels (EEGLs):
10-minute EEGL: 0.1 ppm
60-minute EEGL: 0.05 ppm (tentative)
24-hour EEGL: 0.01 ppm (tentative)
Lethal concentration data:
| Adjusted | ||||||
|---|---|---|---|---|---|---|
| LC50 | LCLo | 0.5-hr | Derived | |||
| Species | Reference | (ppm) | (ppm) | Time | LC (CF) | Value |
| Mouse | Albin 1962 | 875 | ----- | 1 min | 280 ppm (0.32) | 28 ppm |
| Mouse | Albin 1962 | 175 | ----- | 10 min | 121 ppm (0.69) | 12 ppm |
| Dog | Albin 1962 | 150 | ----- | 30 min | 150 ppm (1.0) | 15 ppm |
| Rat | Carpenter et al. 1949 | 8 | ----- | 4 hr | 16 ppm (2.0) | 1.6 ppm |
| Rat | Catilina et al. 1966 | 375 | ----- | 10 min | 259 ppm (0.69) | 26 ppm |
| Hamster | Kruysse 1971 | 25.4 | ----- | 4 hr | 51 ppm (2.0) | 5.1 ppm |
| Cat | Skog 1950 | ----- | 674 | 2 hr | 1,078 ppm (1.6) | 108 ppm |
| Rat | Skog 1950 | 131 | ----- | 30 min | 131 ppm (1.0) | 13 ppm |
Other animal data: RD50 (mouse), 1.68 [Alarie 1981].
Human data: It has been reported that 5.5 ppm results in intense irritation and marked lacrimation, after 60 seconds [Henderson and Haggard 1943]. Exposures to 1.8 ppm result in slight eye irritation after 1 minute and profuse lacrimation after 4 minutes [NRC 1981]. In volunteers exposed for 5 minutes, concentrations of 2 to 2.3 ppm produced severe irritation [Darley et al. 1960]. A 10-minute exposure at 8 ppm and a 5-minute exposure at 1.2 ppm elicited extreme irritation described as "only just tolerable" [Sim and Pattle 1957].
Revised IDLH: 2 ppm
Basis for revised IDLH: The revised IDLH for acrolein is 2 ppm based on acute inhalation toxicity data in humans [Darley et al. 1960; Henderson and Haggard 1943; NRC 1981; Sim and Pattle 1957].
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