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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 283-907-6 | CAS number: 84775-78-0 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Ascophyllum nodosum, Fucaceae.
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Deviations:
- no
- Principles of method if other than guideline:
- The partition coefficient is estimate from the solubiliy of the substance in methanol and in water:
P estimate = saturation in n-octanol/ saturation in water - GLP compliance:
- no
- Type of method:
- other: estimated by calculation
- Partition coefficient type:
- octanol-water
- Key result
- Type:
- Pow
- Partition coefficient:
- <= 0
- Temp.:
- 22 °C
- pH:
- >= 7.4 - <= 7.5
- Type:
- log Pow
- Partition coefficient:
- <= -3.3
- Temp.:
- 22 °C
- pH:
- >= 7.4 - <= 7.5
Reference
It is not possible to define an active substance therefore a sperimental method to calcultate the partition coefficient can not be performed.
In accordance with Column 2 of REACH Annex VII, the partition coefficient (required in section 7.8) could be estimated from the solubility results, therefore:
Pow (estimate) = Coctanol / Cwater = 250.6 / 500,000 = 5.0 E -04
LogPow = Log (5.0 E-04) = -3.3
where
Coctanol: < 250.6 mg/L [from section 4.9 the solubility in methanol is 250.6 mg/L. Due the higher polarity of methanol versus n-octanol the real value is minor than 250.6 mg/L]
Cwater: >500,000 mg/L [from section 4.8]
Due the considaration above the calculate value will overestimate the real value.
Description of key information
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -3.3
- at the temperature of:
- 22 °C
Additional information
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.
