PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Dioxane, 1,4-; (1,4-Diethyleneoxide) 123-91-1 1165
13.00
15.01
4.01
11.01
4.08
4.05
7.01
8.00
11.00
4.09
Formula Synonyms
C4H8O2 DIOXANE, 1,4-DIETHYLENE DIOXIDE, 1,4-DIOXACYCLOHEXANE, 1,4-DIOXAN, 1,4-DIOXANE, 1,4-DIOXIN, TETRAHYDRO-, DI(ETHYLENE OXIDE), DIETHYLENE DIOXIDE, DIETHYLENE ETHER, DIETHYLENE OXIDE, DIOKAN, DIOXAN, DIOXANE-1,4, DIOXANNE (DOT FRENCH), DIOXANO (DOT SPANISH), DIOXYETHYLENE ETHER, ETHYLENE GLYCOL ETHYLENE ETHER, GLYCOL ETHYLENE ETHER, NCI-C03689, NE 220, P-DIOXAN, P-DIOXANE, P-DIOXIN, TETRAHYDRO-, RCRA WASTE NUMBER U108, TETRAHYDRO-1,4-DIOXIN, TETRAHYDRO-P-DIOXIN, UN 1165
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
88.11 L 11.7 101.5 75 39.6 1.0337 @ 20°C 20000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
17 320 760
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
61 1200 2700
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).
• 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 Rev. 29A reported TEEL-1 value in units of mg/m3 may be due to conversion and rounding of this value, instead of use of the source value. Values in units of mg/m3 are reported as published in the technical support document page viii-ix, per handbook guidance (Section 3.4.7.2).
References
AEGLs (pg. viii-ix) and chemical information (Table 1, pg. 1-2) retrieved from: https://www.epa.gov/aegl/14-dioxane-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.