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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 264-150-0 | CAS number: 63449-39-8
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Environmental Risk Evaluation Report: Long-Chain Chlorinated Paraffins
- Author:
- UK Environment Agency
- Year:
- 2 009
- Reference Type:
- publication
- Title:
- Uptake of chlorinated paraffins and PCB [Polychlorinated Biphenyl] from suspended solids and food by juvenile Atlantic salmon.
- Author:
- Zitko, V.
- Year:
- 1 974
- Bibliographic source:
- Bulletin of Environmental Contamination and Toxicology, 12, 406-412. In: UK Environment Agency. Environmental Risk Evaluation Report: Long-Chain Chlorinated Paraffins. January 2009.
- Reference Type:
- publication
- Title:
- Fate of high molecular weight-chlorinated paraffins in the aquatic environment.
- Author:
- Zitko V and Arsenault E
- Year:
- 1 977
- Bibliographic source:
- Advances in Environmental Science and Technology, 8, 409-418.
Materials and methods
- Principles of method if other than guideline:
- Amounts of LCCP in both stoppered and aerated flasks in spiked sediment/water solutions were measured over a period of 28 days.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Paraffin waxes and Hydrocarbon waxes, chloro
- EC Number:
- 264-150-0
- EC Name:
- Paraffin waxes and Hydrocarbon waxes, chloro
- Cas Number:
- 63449-39-8
- Molecular formula:
- C18H33Cl5 C18H30Cl8 C20H36Cl6 C20H33Cl9 C25H45Cl7 C25H42Cl10 C25H29C23 C30H53Cl9 C30H49Cl13 C30H35Cl27
- IUPAC Name:
- Paraffin waxes and Hydrocarbon waxes (C18 and longer), chloro
- Details on test material:
- C20-30, 42% wt. Cl
Constituent 1
Study design
- Oxygen conditions:
- other: aerobic and anaerobic
- Inoculum or test system:
- natural water / sediment
- Details on inoculum:
- The tests were carried out in flasks containing 25 g of sediment, 300 ml of sea water and 10 ml of a suspension of decomposing organic
matter in sea water. Three flasks were used in the experiment, one for each of the two products tested, and a third acting as control. The flasks were incubated at 19–22°C with aeration for 28 days (the volume of water was kept constant by adding distilled water during the test). In addition to these, another identical set of three flasks were kept stoppered over the exposure period. - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 596 other: mg/kg dry weight sediment
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- test mat. analysis
Results and discussion
- Details on results:
- Concentration of chlorinated paraffin (mg/kg dry weight)
Aerated Flasks
0 days: 596
10 days: 257
21 days: 147
28 days: 377
Stoppered Flasks:
0 days: 596
10 days: 80
21 days: 194
28 days: 98
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Interpretation of results:
- inherently biodegradable, not fulfilling specific criteria
- Conclusions:
- Test material was consumed in both the aerated and stoppered flasks over 28 days.
- Executive summary:
Test material was consumed in both the aerated and stoppered flasks over 28 days.
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.
