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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 946-010-7 | CAS number: -
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
The water solubility has been evaluated for each of the 12 identified constituents in this UVCB substance, except for the 4 molecules that are not in the domain of applicability due to the too high number of aliphatic carbons. However, for these 4 constituents, the presence of two long aliphatic chains undoubtedly leads to an extremely low water solubility value, even lower than for the other constituents in this series.
The water solubility values in the 8 molecules within the domain applicability range from 0.01 to 0.0001. The oxazoline forms are on the lower end of this range and the amide forms are on the higher end. The ester forms are all out of the domain of applicability but due to the presence of two long aliphatic chains their water solubility are certainly even lower and do not contribute to the overall water solubility of this UVCB substance.
Using the individual water solubility values of each consituent and their percentage in the UVCB, also considering the contribution of the components outside the domain of applicability as negligible, I made a calculation of the overall water solubility. The explanation of the naming of all the constituents is given in attachment in the analytical endpoint 1.4 in the HPLC report. (the chemical names are really impractical to use).
Key value for chemical safety assessment
- Water solubility:
- 0.002 mg/L
- at the temperature of:
- 25 °C
Additional information
The detail of the calculation is given in the table below:
| Components | Conc (%) | QSAR solubility (mg/l) WSKOWWIN Model | Number of -CH2- | Number of double bonds |
| Alkaterge-E (oleic) | 20,79 | 0,000100000 | 16 | 2 |
| Alkaterge-E amide (oleic) | 18,20 | 0,004227000 | 17 | 2 |
| Alkaterge-E (linoleic) | 15,40 | 0,000157000 | 14 | 4 |
| Alkaterge-E amide (linoleic) | 13,48 | 0,006638000 | 15 | 4 |
| Alkaterge-E (linolenic) | 1,16 | 0,000246500 | 12 | 6 |
| Alkaterge-E (stearic) | 1,16 | 0,000063710 | 18 | 0 |
| Alkaterge-E amide (linolenic) | 1,01 | 0,010420000 | 13 | 6 |
| Alkaterge-E amide (stearic) | 1,01 | 0,002692000 | 19 | 0 |
| Alkaterge-E ester (oleic; oleic) | 13,39 | 0,000000000 | 30 | 4 |
| Alkaterge-E ester (linoleic; linoleic) | 9,92 | 0,000000000 | 26 | 8 |
| Alkaterge-E ester (linolenic; linolenic) | 0,74 | 0,000000000 | 22 | 12 |
| Alkaterge-E (stearic; stearic) | 0,74 | 0,000000000 | 34 | 0 |
| Unknown | 3,00 | 0,000000000 | ||
| Solubility of Alkaterge-E: | 0,001845114 | mg/l |
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.
