PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Methyllactonitrile, 2-; (Acetone cyanohydrin) 75-86-5 1541
17.00
6.00
15.01
11.01
15.02
4.08
4.05
7.01
8.00
11.00
Formula Synonyms
C4H7NO ACETONE CYANOHYDRIN, STABILIZED, 2-CYANO-2-HYDROXYPROPANE, 2-CYANO-2-PROPANOL, 2-HYDROXY-2-CYANOPROPANE, 2-HYDROXY-2-METHYL-PROPIONITRILE, 2-HYDROXY-2-METHYLPROPANENITRILE, 2-HYDROXY-2-METHYLPROPIONITRILE, 2-HYDROXYISOBUTYRONITRILE, 2-METHYL-2-HYDROXYPROPIONITRILE, 2-METHYLACTONITRILE, 2-METHYLLACTONITRILE, 2-PROPANONE, CYANOHYDRIN, ACETONE CYANHYDRIN, ACETONE CYANOHYDRIN, ALPHA-HYDROXY ISOBUTRONITRILE, ALPHA-HYDROXYISOBUTYRONITRILE, CIANHIDRINA DE LA ACETONA, ESTABILIZADA (DOT SPANISH), CYANHYDRINE D^ACÉTONE, STABILISÉE (DOT FRENCH), CYANOHYDRIN-2-PROPANONE, LACTONITRILE, 2-METHYL-, PROPANENITRILE, 2-HYDROXY-2-METHYL-, PROPANENITRILE, 2-HYRODXY-2-METHYL, USAF RH-8
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
85.11 L -19 95 20 0.932 @ 19°C 22000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
2.0 7.1 15
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
7.0 25 52
Technical Basis
A review of available sources identified AEGLs for this chemical. The AEGLs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1). Values in units mg/m3 are reported as published in the technical support document Table 1-1, per handbook guidance (Section 3.4.7.2).
• TEEL-1 = AEGL-1
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values consistent with Rev. 29A. The minor difference in the reported TEEL-3 value in units mg/m3 may be due to conversion and rounding of this value, instead of use of the source value.
References
AEGLs (Table 1-1) and chemical information (Table 1-2) retrieved from: https://www.epa.gov/aegl/acetone-cyanohydrin-results-aegl-program
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.