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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 237-725-9 | CAS number: 13945-76-1
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- Refer to analogue justification provided in IUCLID section 13.
- Reason / purpose for cross-reference:
- read-across source
- Parameter:
- % degradation (O2 consumption)
- Value:
- 67
- Sampling time:
- 28 d
- Remarks on result:
- other: BOD/ThOD
- Remarks:
- Source: RA-A, CAS 3234-85-3, METI, 1992
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 94
- Sampling time:
- 28 d
- Remarks on result:
- other:
- Remarks:
- Source: RA-A, CAS 3234-85-3, METI, 1992
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The target substance is readily biodegradable (67% in 28 d based on BOD, 94% in 28 d based on test material analysis) according to the available experimental study for a structurally closely related source substance (OECD 301 C, activated sludge); read-across
Reference
Description of key information
Readily biodegradable (67% in 28 d, OECD 301 C); read-across
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
There is no study available, in which the ready biodegradability of the target substance lauryl laurate (CAS 13945-76-1) was assessed according to OECD guideline and GLP. Therefore, read-across to the structurally related source substance tetradecanoic acid, tetradecyl ester (CAS 3234-85-3) was conducted in accordance with Regulation (EC) No 1907/2006 Annex XI, 1.5. The source substance is characterized by similar fatty acid and alcohol components and is therefore considered a suitable representative for the assessment of the ready biodegradability of the target substance. A detailed justification of the analogue approach is provided in IUCLID section 13.
The available key study on the source substance was conducted according to OECD guideline 301 C and GLP. A nominal concentration of 100 mg/L was inoculated with a mixed inoculum composed of activated sludge from STPs, freshwater from rivers and lakes, marine water and marine sediment for 28 d under aerobic conditions. Degradation was followed by continuous measurement of O2 consumption and TOC removal as well as regular test material analysis by GC-FID. After 28 d, the test item reached a degradation of 67% (BOD). Since the substance reached the pass level for OECD 301C (biodegradation is > 60% after 28 d, no 10-day window required) the test item is readily biodegradable according to the OECD criteria.
Based on the structural similarities between the target and source substance, it can be concluded that the target substance lauryl laurate (CAS 13945-76-1) is readily biodegradable according to OECD criteria.
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.
