| Chemical |
4-methoxyaniline |
| CAS-number : |
104-94-9 |
| |
| Synonyms : |
| p-aminoanisole |
| p-aminomethoxybenzene |
| p-aminomethylphenylether |
| p-anisidine |
| |
| Sumformula of the chemical : |
| C7H9NO |
| EINECS-number : |
| 2032542 |
| |
| Molecular weight : |
123.15 |
| |
| Spesicif gravity (water=1) : |
| 1.0605 |
at 67/4 °C |
| |
| Vapor density (air=1) : |
| 4.25 |
|
| |
| Conversion factor, 1 ppm in air=_mg/m3 : |
| 5.12 |
mg/m3 |
| |
| Conversion factor, 1 mg/m3 in air=_ppm : |
| 0.2 |
ppm |
| |
| Melting point, °C : |
| 57 |
57 - 59 °C |
| 59 |
|
| 57 |
MITI 1992 |
| |
| Boiling point, °C : |
| 243 |
|
| 246 |
MITI 1992 |
| |
| Log octanol/water coefficient, log Pow : |
| 0.95 |
|
| |
| Photochemical degradation in air : |
Photooxidation half-life in air:
5.3hr 0.53hr, based upon estimated photooxidation rate
constant with ·OH (Howard 1991).
|
| |
| Photochemical degradation in water : |
Photooxidation half-life in water:
145d - 2.6d, scientific judgement based upon photooxidation
rate constants with ·OH and RO2· for the aromatic amine class
(Howard 1991).
|
| |
| Half-life in air, days : |
| 0.221 |
5.3hr - 0.53hr, |
| 0.0221 |
based upon estimated photooxidation half-lives in air. |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 28 |
4w - 7d, |
| 7 |
scientific judgement based upon estimated aqueous aerobic biodegradation half-lives. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 28 |
4w - 2.6d, |
| 2.6 |
in surface water: the high value is scientific judgement based upon estimated aqueous aerobic biodegradation half-life. The low value is based upon aqueous photooxidation half-life. |
| 56 |
8w - 14d, |
| 14 |
in ground water: scientific judgement based upon estimated aqueous aerobic biodegradation half-lives. |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
4w - 7d, scientific judgement based upon aerobic biological
screening studies (Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
16w - 28d, scientific judgement based upon estimated aqueous
aerobic biodegradation half-lives (Howard 1991).
|
| |
| Total degradation in soil : |
Decomposition period by a soil microflora: 64 days
(Verschueren 1983).
|
| |
| Total degradation in water : |
Biodegradation:
65.3% by BOD
period: 14d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
| |
| Ready biodegradability : |
Confirmed to be biodegradable (Anon. 1987). |
| |
| LD50 values to birds in oral exposure, mg/kg : |
| 316 |
orl-Agelaius phoeniceus |
| 316 |
316 - 1000, orl-Sturnus vulgaris |
| 1000 |
|
| 1000 |
>1000, orl-Coturnix coturnix |
| |
Schafer et al. 1983 |
| |
| Effects on wastewater treatment : |
Degradation by Aerobacter: 500 mg/l at 30 °C:
ring disruption: parent: 86 % in 120 hr
mutant: 100 % in 12 hr
(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. |
| 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.
|
| 1743 | Schafer , E.W.Jr., Bowles, W.A.Jr., Hurlbut, J. 1983.
The acute
oral toxicity, repellency and hazard potential of 993 chemicals to
one or more species of wild and domestic birds.
Arch.
Environ.
Contam.
Toxicol. 12: 355 - 382. |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
