PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Butanone, 2-; (Methyl ethyl ketone; MEK) 78-93-3 1193
15.01
11.01
15.02
4.08
4.05
7.01
8.00
7.00
11.00
4.02
Formula Synonyms
C4H8O ETHYL METHYL KETONE, 2-BUTANONE, 3-BUTANONE, BUTANONE, ÉTHYLMÉTHYLCÉTONE (DOT FRENCH), ETILMETILCETONA (DOT SPANISH), KETONE, ETHYL METHYL, MEETCO, MEK, METHYL ACETONE, METHYL ETHYL KETONE, METHYL ETHYL KETONE (MEK), MÉTHYLÉTHYLCÉTONE (DOT FRENCH), METIL ETIL CETONA (DOT SPANISH), RCRA WASTE NUMBER U159, UN 1193, UN 1232
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
72.11 L -86.64 79.59 75 21.2 0.7999 18000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
200 2700 4000
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
590 8000 12000
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 3-1, per handbook guidance (Section 3.4.7.2). TEELs are reported here as published (with 3 or 4 significant figures).
• TEEL-1 = AEGL-1
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values consistent with Rev. 29A. Differences in the reported values in units mg/m3 may be due to conversion and rounding of these values, instead of use of source values. Note: The AEGL-2 and AEGL-3 values require “safety considerations against the hazard(s) of explosion(s)” (≥10% LEL).
References
AEGLs and chemical information retrieved from: https://www.epa.gov/aegl/methyl-ethyl-ketone-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.