Registration Dossier
Registration Dossier
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EC number: 204-442-7 | CAS number: 121-00-6
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
Based on the Level III Fugacity Model, the half life period of thetert-butyl-4-methoxyphenol was estimated to be 900 hrs (37.5 days) in water and 337.5 days in sediment respectively. Therfore it is considered that the substance will qualify as not persistent in water medisum as the half life does not exceed the EPA criteria of 60 days. However, it can be observed that tert-butyl-4-methoxyphenol was seem to be persistent in sediment medium but can be ignored the sediment persitence as it does not diffuse in the sediment medium and it's percentage defussion in the sediment medium is reported to be much lower as 0.854 %.
Key value for chemical safety assessment
- Half-life in freshwater:
- 900 h
- at the temperature of:
- 25 °C
- Half-life in freshwater sediment:
- 8 100 h
- at the temperature of:
- 25 °C
Additional information
|
Mass Amount (percent) |
Half-Life (hr) |
Emissions (kg/hr) |
Water |
18.3 |
900 |
1000 |
Sediment |
0.854 |
8.1e+003 |
0 |
|
Fugacity (atm) |
Reaction (kg/hr) |
Advection (kg/hr) |
Reaction (percent) |
Advection (percent) |
Water |
1.88e-011 |
447 |
581 |
14.9 |
19.4 |
Sediment |
2.07e-011 |
2.31 |
0.54 |
0.0771 |
0.018 |
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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