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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 269-085-1 | CAS number: 68187-30-4
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Validated QSAR model. Calculation for main component of l-Glutamic acid, N-coco acyl derivs., disodium salts.
- Principles of method if other than guideline:
- Calculation based on AOPWIN v1.92, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.10. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 0.5E+06 radicals/cm3
- Degradation rate constant: 32.7017 E-12 cm3/molecule-sec
- Temperature for which rate constant was calculated: 25 °C
- Computer programme: AOPWIN v1.92 - DT50:
- 11.78 h
- Test condition:
- calculation based on 24 h day
- Endpoint:
- phototransformation in air
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Validated QSAR model. Calculation for main component of l-Glutamic acid, N-coco acyl derivs., disodium salts.
- Principles of method if other than guideline:
- Calculation based on AOPWIN v1.92, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.10. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 0.5E+06 radicals/cm3
- Degradation rate constant: 35.5278 E-12 cm3/molecule-sec
- Temperature for which rate constant was calculated: 25 °C
- Computer programme: AOPWIN v1.92 - DT50:
- 10.84 h
- Test condition:
- calculation based on 24 h day
Referenceopen allclose all
For detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables". The estimation is based on a 24 hour day.
For detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables". The estimation is based on a 24 hour day.
Description of key information
Phototransformation is not a relevant degradation pathway.
Key value for chemical safety assessment
Additional information
No experimental data evaluating the potential for photodegradation of l-Glutamic acid, N-coco acyl derivs., disodium salts (CAS No. 68187-30-4) in air are available. As the substance is a complex UVCB substance, QSAR calculations for the main components (C12, C14) have been performed (AOPWIN v1.92, EPISuiteTM), resulting in estimated half-lives (DT50 values) of 11.76 (C12) and 10.84 (C14) hours (OH concentration: 0.5E+06 OH/cm3, 24h-day).
These results indicate that l-Glutamic acid, N-coco acyl derivs., disodium salts is susceptible for indirect photodegradation in air. However, photodegradation in air is not considered to be a relevant degradation process as the substance is not expected to evaporate into the atmosphere based on its low vapor pressure of < 0.00001 Pa (at 20 °C).
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.
