| Chemical |
Ethyl acrylate |
| CAS-number : |
140-88-5 |
| |
| Synonyms : |
| 2-Propenoic acid, ethyl ester |
| Etyyliakrylaatti |
| |
| Sumformula of the chemical : |
| C5H8O2 |
| EINECS-number : |
| 2054388 |
| |
| Uses : |
Solvent.
|
| |
| Odor : |
Quality: sour, pungent
Hedonic tone: unpleasant
Threshold odour concentration
absolute: 0.0002 ppm
50 % recognition: 0.00030 ppm
100 % recognition: 0.00036 ppm
Odour index 100 % recognition: 113 000 000
(Hellman & Small 1974)
|
| |
| Water solubility, mg/l : |
| 15000 |
20 °C |
| 15000 |
MITI 1992 |
| |
| Boiling point, °C : |
| 99.4 |
|
| 99.7 |
MITI 1992 |
| |
| Log octanol/water coefficient, log Pow : |
| 1.32 |
Sangster 1989 |
| |
| Volatilization : |
Relative volatility (nBuAc=1) = 3.3
|
| |
| Photochemical degradation in air : |
Photooxidation half-life in air:
22.7hr - 2.37hr, scientific judgement based upon estimated rate
constants for reaction with hydroxyl radical (Howard 1991).
|
| |
| Hydrolysis in water : |
First-order hydrolysis half-life:
2.47X104 hr (2.8yr), (t1/2 at pH 7) based upon acid and base
catalyzed hydrolysis rate constants (Howard 1991).
|
| |
| Hydrolysis in acid : |
Acid rate constant (M(H+)-hr)-1:
1.2X10-6 M-1 s-1, (2.14X106 hr (244yr) t1/2 at pH 5) based upon
acid and base catalyzed hydrolysis rate constants (Howard
1991).
|
| |
| Hydrolysis in base : |
Base rate constant (M(OH-)-hr)-1:
0.078 M-1 s-1, (247hr (10.3d) t1/2 at pH 9) based upon acid and
base catalyzed hydrolysis rate constants (Howard 1991).
|
| |
| Half-life in air, days : |
| 0.94 |
22.7hr - 2.37hr, |
| 0.1 |
scientific judgement based upon estimated photooxidation rate constant in air. |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 7 |
7d - 1d, |
| 1 |
scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 7 |
7d - 1d, |
| 1 |
in surface water: scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
| 14 |
14d - 2d, |
| 2 |
in ground water: scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
7d - 1d, scientific judgement based upon aqueous aerobic
screening test data (Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
28d - 4d, scientific judgement based upon estimated
unacclimated aqueous aerobic biodegradation half-life (Howard
1991).
|
| |
| Total degradation in water : |
Biodegradation:
52% by BOD (on the upward trend)
period: 14d
substnce: 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 : |
| 1000 |
orl-rat |
| |
| LC50 values to fishes, mg/l : |
| 2.5 |
96 hr, Pimephales promelas, Geiger et al. 1990 |
| |
| EC50 values to fishes, mg/l : |
| 2.5 |
96 hr, mbt, Pimephales promelas, Geiger et al. 1990 |
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. |
| 3297 | Geiger, D.
L. et al. 1990.
Acute toxicities of organic
chemicals to fathead minnows (Pimephales promelas) Vol 5.
Center for Lake Superior Environmental Studies, University of
Winsconsin-Superior, Superior, Winconsin, U.S.A. 332.
|
| 1673 | Hellman, T.M. & Small, F.H. 1974.
Characterization of the odour
properties of 101 petrochemicals using sensory methods.
J.
Air
Pollut.
Control Assoc. 24: 979 - 982. |
| 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.
|
| 3104 | Sangster, J. 1989.
Octanol-water partition coefficients of
simple organic compounds.
J.
Phys.
Chem.
Ref.
Data, Vol 18, No.
3: 1111 - 1229. |
