Chemical Safety Program: PACs for Chemicals of Concern

PAC Database - Detailed Chemical Data

Chemical Identity

Chemical	CAS#	UN#	Health Code Numbers
Epichlorohydrin	106-89-8	2023	14.01 4.01 11.01 14.02 4.08 4.05 7.01 8.00 7.00 11.00
Formula	Synonyms
C3H5ClO	1-CHLORO-2,3-EPOXYPROPANE, (.+-.)-EPICHLOROHYDRIN, (CHLOROMETHYL)ETHYLENE OXIDE, (CHLOROMETHYL)OXIRANE, (DL)-ALPHA-EPICHLOROHYDRIN, (RS)-EPICHLORHYDRIN, 1,2-EPOXY-3-CHLOROPROPANE, 1-CLORO-2,3-EPOXIPROPANO (DOT SPANISH), 2,3-EPOXYPROPYL CHLORIDE, 2-(CHLOROMETHYL)OXIRANE, 2-CHLOROPROPYLENE OXIDE, 3-CHLORO-1, 2-PROPYLENE OXIDE, 3-CHLORO-1,2-EPOXYPROPANE, 3-CHLORO-1,2-PROPYLENE OXIDE, 3-CHLOROPROPENE-1,2-OXIDE, 3-CHLOROPROPYLENE OXIDE, ALPHA-EPICHLOROHYDRIN, ALPHA-EPICHOROHYDRIN, CHLORO-1 ÉPOXY-2,3 PROPANE (DOT FRENCH), CHLOROHYDRINS, CHLOROMETHYLOXIRANE, CHLOROPROPYLENE OXIDE, CRUDE EPICHLOROHYDRIN, DL-ALPHA-EPICHLOROHYDRIN, ECH, EPICHLORHYDRIN, ÉPICHLORHYDRINE (DOT FRENCH), EPICHLOROHYDRIN, EPICHLOROPHYDRIN, EPICLORHIDRINA (DOT SPANISH), GAMMA-CHLOROPROPYLENE OXIDE, GLYCEROL EPICHLORHYDRIN, GLYCEROL EPICHLOROHYDRIN, GLYCIDYL CHLORIDE, J 006, NCI-CO7001, OXIRANE, (CHLOROMETHYL)-, OXIRANE, 2-(CHLOROMETHYL), OXIRANE,(CHLOROMETHYL)-, PROPANE, 1-CHLORO-2,3-EPOXY-, RCRA WASTE NUMBER U041, SKEKHG, UN 2023

Physical Properties

Mol Wt	State	MP (°C)	BP (°C)	VP (Hg)	VP (°C)	SG	LEL (ppm)
92.53	L	-25.6	117.9	16.4	25	1.175	38000

PAC Values

PAC Values (Original Units: ppm)
PAC-1	PAC-2	PAC-3
1.7	24	72

Converted PAC Values (mg/m3)
PAC-1	PAC-2	PAC-3
6.4	91	270

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 values consistent with Rev. 29A*.

References

AEGLs (Table 4-1, pg. 194) and chemical information (Table 4-2, pg. 4-2) retrieved from: https://www.epa.gov/aegl/epichlorohydrin-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.