Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 202-761-6 | CAS number: 99-51-4
Biodegradation in water and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water and sediment: simulation tests
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- other: Prediction model
- Title:
- Biodegradation in water and sediment by Environmental Science Center’s PBT profiler
- Author:
- Environmental Science Center
- Year:
- 2 010
- Bibliographic source:
- PBT profiler, Office of Chemical Safety and Pollution Prevention , U.S. Environmental Protection Agency; version 1.301
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Modelling database
- Principles of method if other than guideline:
- PBT profiler database
- GLP compliance:
- no
Test material
- Reference substance name:
- 4-nitro-o-xylene
- EC Number:
- 202-761-6
- EC Name:
- 4-nitro-o-xylene
- Cas Number:
- 99-51-4
- Molecular formula:
- C8H9NO2
- IUPAC Name:
- 4-nitro-o-xylene
- Details on test material:
- Substance Name : 4-nitro-o-xylene
Molecular Formula : C8H9NO2
Physical state : Liquid
Constituent 1
- Radiolabelling:
- not specified
Study design
- Oxygen conditions:
- other: Estimation
- Inoculum or test system:
- not specified
- Parameter followed for biodegradation estimation:
- test mat. analysis
Reference substance
- Reference substance:
- not specified
Results and discussion
Mean total recoveryopen allclose all
- Compartment:
- other: water, material (mass) balance
- % Recovery:
- 19
- Compartment:
- other: sediment, material (mass) balance
- % Recovery:
- 0
% Degradationopen allclose all
- % Degr.:
- 50
- Parameter:
- other: Half life
- Sampling time:
- 38 d
- % Degr.:
- 50
- Parameter:
- other: Half life
- Sampling time:
- 340 d
Half-life of parent compound / 50% disappearance time (DT50)open allclose all
- Compartment:
- water
- DT50:
- 38 d
- Type:
- other: Estimated
- Remarks on result:
- other: Other details not available
- Compartment:
- sediment
- DT50:
- 340 d
- Type:
- other: Estimated
- Remarks on result:
- other: Other details not available
- Transformation products:
- not specified
Applicant's summary and conclusion
- Conclusions:
- Half life period of 4-nitro-o-xylene in water observed 38 days (half-life) while in sediment it is 340 days (half-life). Based on these half life values, it is concluded that 4-nitro-o-xylene is readily biodegradable in water where as it is not likely to biodegrade in sediment.
- Executive summary:
Half life period of 4-nitro-o-xylene in water observed 38 days (half-life) while in sediment it is 340 days (half-life). Based on these half life values, it is concluded that 4-nitro-o-xylene is readily biodegradable in water where as it is not likely to biodegrade in sediment.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
