Chemical |
Ethyleneglycol monomethylether |
CAS-number : |
109-86-4 |
|
Synonyms : |
2-methoxyethanol. |
2-metoksietanoli |
Etyleeniglykolimonometyylieetteri |
methylcellusolve |
metyyliglykoli |
|
Sumformula of the chemical : |
C3H8O2 |
EINECS-number : |
2037137 |
|
Uses : |
Solvent for nitrocellulose, cellulose acetate, alcohol-soluble
dyes, natural and synthetic resins, solvent mixtures, lacquers,
enamels, varnishes, leather, perfume fixtive, wood stains,
sealing moisture-proof cellophane, jet fuel deicing additive.
|
|
State and appearance : |
Colorless liquid, stable.
|
|
Odor : |
Mild agreeable odor.
|
|
Spesicif gravity (water=1) : |
0.9663 |
|
|
Water solubility, mg/l : |
|
Infinite |
100000 |
>100000, MITI 1992 |
|
Melting point, °C : |
-10 |
<-10, MITI 1992 |
|
Boiling point, °C : |
125 |
|
122 |
122-126, MITI 1992 |
|
Flashing point, °C : |
43.3 |
|
|
Volatilization : |
Relative volatility (nBuAc=1) = 0.70
|
|
Other physicochemical properties : |
Miscible with hydrocarbons, alcohols, ketones, glycols and
water.
Autoign temperature 288 °C.
Combustible.
|
|
Photochemical degradation in air : |
Photooxidation half-life:
57hr - 5.7hr, scientific judgement based upon estimated rate
constant for reaction with hydroxyl radicals in air (Howard
1991).
|
|
Photochemical degradation in water : |
Photooxidation in water:
54yr - 308d, based upon measure rate constants for reaction
with hydroxyl radicals in water (Howard 1991).
|
|
Chemical oxygen demand, g O2/g : |
1.69 |
5 days, Bridie et al. 1979 |
|
Biochemical oxygen demand, g O2/g : |
0.12 |
5 days, Bridie et al. 1979 |
|
Half-life in air, days : |
2.4 |
57hr - 5.7hr, |
0.24 |
scientific judgement upon estimated rate constant for reaction with hydroxyl radicals in air. |
|
Howard 1991 |
|
Half-life in soil, days : |
28 |
4we - 7d, |
7 |
scientific judgement based upon estimated unacclimated aqueous aerobic biodegradationhalf-life. |
|
Howard 1991 |
|
Half-life in water, days : |
28 |
4we - 7d, |
7 |
in surface water: scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
56 |
8we - 14d, |
14 |
scientific judgement based estimated unacclimated aqueous aerobic biodegradation half-life. |
|
Howard 1991 |
|
Aerobic degradation in water : |
Aerobic half-life:
4we - 7d, scientific judgement based upon unacclimated aerobic
aqueous screening test data (Howard 1991).
|
|
Anaerobic degradation in water : |
Anaerobic half-life:
16we - 4we, scientific judgement based upon estimated
unacclimated aqueous aerobic biodegradation half-life (Howard
1991).
|
|
Total degradation in water : |
Biodegradation:
73-94% by BOD
period: 14d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
|
LD50 values to mammals in oral exposure, mg/kg : |
2140 |
|
|
LOEC values to algae, mg/l : |
100 |
rpd, schr, Microcystis aeruginosa |
|
Bringmann & Kühn 1976 |
|
LC50 values to fishes, mg/l : |
10000 |
> 10000, 96hr, Lepomis macrochirus |
|
Menidia audens |
|
Dawson et al. 1977 |
|
-- |
15520 |
96hr, Salmo gairdneri, Verschueren 1983 |
|
-- |
17400 |
7d, Poelicia reticulata, Könemann 1979 |
|
-- |
5000 |
> 5000, 24hr, Carassius auratus |
|
Bridie et al. 1979 |
References |
182 | Bridie, A.L. et al. 1979.
The acute toxicity of some
petrochemicals to goldfish.
Water Res. 13: 623. |
1680 | Bridie, A.L., Wolff, C.J.M. & Winter, M. 1979.
BOD and COD of
some petrochemicals.
Water Res. 13: 627 - 630. |
187 | Bringmann, G. & Kühn, R. 1976.
Vergleichende Befunde der
Schadwirkung wassergefährdender Stoffe gegen Bakterien
(Pseudomonas putida) und Blaualgen (Microcystis aeruginosa).
Gwf-Wasser-Abwasser 117(9). |
327 | Dawson, G.W., Jennings, A.L., Drozdowski, D. & Rider, E.
1977a.
The acute toxicity of 47 industrial chemicals to fresh
and saltwater fishes.
J.
Hazardous Materials 1 (1975/77): 303
- 318. |
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.
|
761 | Könemann, W.H. 1979.
Quantitative structure-activity
relationships for kinetics and toxicity of aquatic pollutants and
their mixtures in fish.
Univ.
Utrecht, Netherlands. |
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. |