PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dichloromethyl ether; (bis(Chloromethyl)ether) | 542-88-1 | 2249 |
15.01
4.01
11.01
15.02
7.01
11.00
4.02
4.07
1.00
10.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C2H4Cl2O | DICHLORODIMETHYL ETHER, SYMMETRICAL, 1,1^-DICHLORODIMETHYL ETHER, ALPHA,ALPHA'-DICHLORODIMETHYL ETHER, BCME, BIS(CHLOROMETHYL) ETHER, BIS-CME, CHLORO(CHLOROMETHOXY) METHANE, CHLOROMETHYL ETHER, DICHLORINATED METHYL OXIDE, DICHLORODIMETHYL ETHER, DICHLOROMETHYL ETHER, DICLORODIMETÍL ÉTER, SIMÉTRICO (DOT SPANISH), DIMETHYL-1,1'-DICHLOROETHER, ÉTHER DICHLORODIMÉTHYLIQUE, SYMÉTRIQUE (DOT FRENCH), ETHER, BIS(CHLOROMETHYL), METHANE, OXYBIS(CHLORO-, METHANE, OXYBIS[CHLORO-, MONOCHLOROMETHYL ETHER, OXYBIS(CHLOROMETHANE), OXYBIS[CHLOROMETHANE], SYM-DICHLORO-DIMETHYL ETHER, SYM-DICHLOROMETHYL ETHER | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 114.96 | L | -41.5 | 106 | 29.4 | 25 | 1.323 @ 15°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0040 | 0.044 | 0.18 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.019 | 0.21 | 0.85 |
Technical Basis
A review of available sources identified exposure limits for this chemical including an AEGL-2 and AEGL-3. The AEGLs were selected as the TEEL-2 and TEEL-3 due to their priority among the emergency exposure limits (Section 1). Due to insufficient data, an AEGL-1 does not exist for this chemical; therefore, the TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values consistent with Rev. 29A*; the minor difference in the Rev. 29A reported TEEL-3 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 Table 1-1, per handbook guidance (Section 3.4.7.2).
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values consistent with Rev. 29A*; the minor difference in the Rev. 29A reported TEEL-3 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 Table 1-1, per handbook guidance (Section 3.4.7.2).
References
Chemical information: Retrieved from Table 1-3 of the EPA Technical Support Document. https://www.epa.gov/aegl/bis-chloromethyl-ether-results-aegl-program
AEGLs: https://www.epa.gov/aegl/bis-chloromethyl-ether-results-aegl-program
Other exposure limits: https://www.osha.gov/chemicaldata/400