CHLOROMETHYL METHYL ETHER†
| Chemical Identification | |
|---|---|
| CAS # | 107-30-2 |
| Formula |
C₂H₅ClO |
| Synonyms |
chlorodimethyl ether; chloromethoxymethane; CMME; dimethylchloroether; methylchloromethyl ether |
| Physical Properties | |||
|---|---|---|---|
| Physical description | Colorless liquid with an irritating odor. | ||
| Boiling point | 138°F | Molecular weight | 80.5 |
| Freezing point/melting point | -154°F | Vapor pressure | 192 mmHg at 70°F |
| Flash point | 32°F (open cup) | Vapor density | |
| Specific gravity | 1.06 | Ionization potential | 10.25 eV |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 3 | NFPA fire rating | 3 |
| NFPA reactivity rating | 2 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Monitoring Methods Used by OSHA | ||||||
|---|---|---|---|---|---|---|
| Analyte code (IMIS no.) | 2640 | |||||
| Sampling group | ||||||
| Sampler/Sampling media | Midget fritted glass bubbler (MFGB) containing 10 mL (Derivatizing reagent: 2,4,6-Trichlorophenol/Sodium methoxide) [Infrequently Requested Method - OSHA staff please contact SLTC before sampling 801-233-4900] | |||||
| Sampling time* | ||||||
| Sampling volume (TWA)* | 50 L |
|||||
| Sampling flow rate (TWA)* | 0.5 L/min |
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| Sampling volume (STEL/Peak/C)* | ||||||
| Sampling flow rate (STEL/Peak/C)* | ||||||
| Analytical method instruments | GC-ECD | |||||
| Method reference | OSHA 10 (fully validated) | |||||
| Notes | derivatizing reagent: 16 g of 2,4,6-trichlorophenol and 4.4 g of sodium methoxide dissolved in 1 L methanol |
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| Special requirements | ||||||
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Method | |
|---|---|
| Sampler/Sampling media | |
| Bulk Method |
|---|
| On-Site Screening Techniques | ||||||
|---|---|---|---|---|---|---|
| Device | ||||||
| Model/Type | ||||||
|
Sampling information (see manufacturer instructions) |
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| Exposure Limits | |||||||
|---|---|---|---|---|---|---|---|
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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| PEL-TWA |
Ca |
REL-TWA | TLV-TWA | PEL-TWA | |||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
NA |
|
Notes:
See 29 CFR 1910.1006, Methyl chloromethyl ether and 29 CFR 1910.1003, 13 Carcinogens. |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A |
Notes:
Exposure by all routes should be carefully controlled to levels as low as possible. [1979] |
Notes:
See California Code of Regulations, Title 8, Section 5209. Carcinogens. |
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| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-1, NIOSH-Ca, NTP-K, OSHA-Ca, TLV-A2, EPA-A |
Notes:
Ca |
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
--/1 ppm/10 ppm |
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| Additional Resources and Literature References |
|---|
|
NOAA: CAMEO Chemicals - Methyl chloromethyl ether NIOSH: Pocket Guide to Chemical Hazards - Methyl chloromethyl ether Literature References
|
Last Updated Date : 12/21/2020