PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ethylene oxide; (Oxirane) | 75-21-8 | 1040 |
14.01
4.01
11.01
14.02
4.08
4.05
7.01
8.00
7.00
11.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C2H4O | ETHYLENE OXIDE, 1,2-EPOXY ETHANE, 1,2-EPOXYETHANE, 12/88, ALPHA, BETA-OXIDOETHANE, AMPROLENE, ANPROLENE, ANPROLINE, CIBA-GEIGY 9138, DIHYDROOXIRENE, DIMETHYLENE OXIDE, E O, E.O., ENT-26263, EPOXYETHANE, ETHENE OXIDE, ETHOX, ETHYLENEOXY, ETO, FEMA NO. 2433, MERPOL, NCI-C50088, OXACYCLOPROPANE, OXANE, OXIDO DE ETILENO (DOT SPANISH), OXIDOETHANE, OXIRAN, OXIRANE, OXIRENE, DIHYDRO-, OXYDE D^ÉTHYLÈNE (DOT FRENCH), OXYFUME, OXYFUME 12, RCRA WASTE NUMBER U115, STERILIZING GAS ETHYLENE OXIDE 100%, T-GAS, UN 1040 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 44.05 | L or G | -112.5 | 10.6 | 750 | 10.2 | 0.8821 @ 10°C | 30000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 5.0 | 45 | 200 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 9.0 | 81 | 360 |
Technical Basis
A review of available sources identified exposure limits for this chemical including a PEL-STEL, AEGL-2, and AEGL-3 for this chemical. The AEGLs were selected as the TEEL-2 and TEEL-3 due to their priority among the emergency exposure limits (Section 1). The PEL-STEL was selected as the TEEL-1.
• TEEL-1 = PEL-STEL
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values consistent with Rev. 29A*.
• TEEL-1 = PEL-STEL
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values consistent with Rev. 29A*.
References
AEGLs (Table 2-1) and chemical information (Table 2-2) retrieved from: https://www.epa.gov/aegl/ethylene-oxide-results-aegl-program
PEL-STEL: https://www.osha.gov/chemicaldata/575