Registration Dossier
Registration Dossier
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EC number: 231-609-1 | CAS number: 7651-02-7
Endpoint summary
Administrative data
Description of key information
Additional information
BIOACCUMULATION: AQUATIC / SEDIMENT
The registration substance is a strong base which under environmental conditions is mostly protonated and therefore a cationic surfactant (e.g. at pH 7 99.6% of the tertiary amine is protonated). For cationic surfactants Log Kow cannot be measured reliably. Therefore the cmc and the octanol solubility of the protonated amine was measured and the log Kow calculated to 2.05. Based on this low Log Kow it can be concluded that the registration substance has a low potential for bioaccumulation and magnification. In addition the registration substance is readily biodegradable and it can be assumed that also metabolism in fish takes place which influences the BCF as well. When using the ADME Model of Arnot and Gobas (US EPA BCF BAF Model) a BCF of 4 L/kg wwt and with the Regression model a BCF of 11 L/kg wwt can be estimated supporting the conclusion of low bioaccumulation potential. Based on this findings it is not warranted to perform an OECD 305 Fish BCF study.
BIOACCUMULATION: SOIL
Using the log Kow of 2.05 (see above) the EUSES 2.1 Model estimates a BCF worm of 2.2 L/kg wwt which means that the bioaccumulation potential is very low.
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.
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