| Chemical |
Chloromethyl methyl ether |
| CAS-number : |
107-30-2 |
| |
| Synonyms : |
| chloromethoxymethane |
| chloromethylether |
| CMME |
| monochlorodimethylether |
| |
| Sumformula of the chemical : |
|
C2H5ClO |
| EINECS-number : |
| 2034801 |
| |
| Known impurities : |
dichloromethylether * 1-8 % |
| |
| Uses : |
Manufacturing irritant gases (lacrymators); chloromethylating
agent; intermediate
|
| |
| State and appearance : |
colourless liquid
|
| |
| Molecular weight : |
80.52 |
| |
| Spesicif gravity (water=1) : |
| 1.0625 |
10/4°C |
| |
| Conversion factor, 1 ppm in air=_mg/m3 : |
| 3.29 |
mg/m3 |
| |
| Conversion factor, 1 mg/m3 in air=_ppm : |
| 0.304 |
ppm |
| |
| Melting point, °C : |
| -103.5 |
|
| -103.5 |
MITI 1992 |
| |
| Boiling point, °C : |
| 59.5 |
|
| 59.5 |
MITI 1992 |
| |
| Other physicochemical properties : |
Miscible with ethanol, ether, acetone and chloroform.
|
| |
| Photochemical degradation in air : |
Photooxidation half-life in air:
9.5d - 22.7hr, scientific judgement based upon estimated rate
constant for reaction with hydroxyl radical (Howard 1991).
|
| |
| Hydrolysis in water : |
Hydrolyses very fast with half-life < 1 sec.; extrapolated to
pure water (Verschueren 1983).
Reaction: ClCH2-O-CH3 + H2O --> CH3OH + HCl + CH2O (Fishbein
1979).
First-order hydrolysis half-life:
1.98min - 39s, high t1/2: scientific judgement based upon
measured neutral hydrolysis rate constants, low t1/2: scientifc
judgemen based upon measured neutral rate constant for
bis(chloromethyl) ether (Howard 1991).
|
| |
| Half-life in air, days : |
| 9.5 |
9.5d - 22.7hr, |
| 0.9458 |
scientific judgement based upon estimated photooxication halflife in air. |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 0.00137 |
1.98min - 39s, |
| 0.00045 |
high t1/2: scientific judgement based upon measured neutral hydrolysis rate constants, low t1/2: scientific judgement based upon measured neutral rae constant for bis(chloromethyl) ether. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 0.00137 |
1.98min - 39s, |
| 0.00045 |
in surface water: high t1/2: scientific judgement based upon measured neutral hydrolysis rate constants, low t1/2: scientific judgement based upon measured neutral rate constant for bis(chloromethyl) ether. |
| 0.00137 |
1.98min - 39s, |
| 0.00045 |
in ground water: hight1/2: scientific judgement based upon measured neutral hydrolysis rate constants, low t1/2: scientific judgement based upon measured neutral rate constant for bis(chloromethyl) ether. |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
4w - 7d, scientific judgement (Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
16w - 28d, scientific judgement based upon estimated
unacclimated aerobic aqueous biodegradation half-life (Howard
1991).
|
| |
| Total degradation in water : |
Biodegradation:
33, 67, 76% by BOD
period 28d
substance: 100 mg/l
sludge: 30 mg/l
80, 80, 83% by TOC
period 28d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
| |
| Ready biodegradability : |
Confirmed to be biodegradable (Anon. 1987). |
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 500 |
orl-rat, Verschueren 1983 |
| |
| Other information of mammals : |
Rat: inhalation: dangerous: 2000 ppm, 30 min
100 ppm, >4 hr
oral dose : survival : 0.3 g/kg
death : 1.0 g/kg
|
| |
| Carcinogenicity : |
Man: carcinogenic because the technical grade contains
dichloromethylethers which are carcinogenic (Verschueren 1983) |
References |
| 1848 | Anon. 1987a.
The list of the existing chemical substances tested
on biodegradability by microorganisms or bioaccumulation in
fish body by Chemicals Inspection & Testing Institute.
Ministry
of International Trade and Industry, MITI.
Japan. |
| 2090 | Fishbein, L. 1979.
Potential halogenated industrial
carcinogenic and mutagenic chemicals.
III: Alkane halides,
alkanols and ether.
The science of the total environment 11:
223- 257. |
| 3120 | Howard, P.H., Boethling, R.S., Jarvis, W.F., Meylan, W.M. &
Michalenko, E.M., Handbook of Environmental Degradation Rates,
1991.
Lewis Publicers, Inc., Chelsea, Michigan, U.S.A.,
pp. 725.
|
| 3105 | MITI 1992.
Biodegradation and bioaccumulation data of existing
chemicals based on the CSCL Japan.
Compild under the Safety
Division Basic Industries Bureau Ministry of International
Trade & Industry, Japan.
Edited by Chemicals Inspection &
Testing Institute, Japan.
|
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
