Registration Dossier
Registration Dossier
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EC number: 281-865-3 | CAS number: 84045-63-6
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
The study does not need to be conducted because the substance has a low octanol water partition coefficient (log Kow <3 and even <0) and the adsorption potential of this substance is related to this parameter. The substance carries sulphonate groups, and is thus anionic. Similar reactive dyes which also carry sulphonate groups, and also having an extremely low log Kow and a very high water solubility showed low Koc values (Koc < 30) in appropriate experiments, indicating that such dyes are very mobile and that the majority will stay in the water phase rather than adsorbing to soil or sludge. - Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
Description of key information
data waiving
Key value for chemical safety assessment
- Koc at 20 °C:
- 30
Additional information
The study does not need to be conducted because the substance has a low octanol water partition coefficient (log Kow <3 and even <0) and the adsorption potential of this substance is related to this parameter. The substance carries sulphonate groups, and is thus anionic. Similar reactive dyes whichalso carry sulphonate groups, and also having an extremely low log Kow and a very high water solubility showed low Koc values (Koc < 30) in appropriate experiments, indicating that such dyes are very mobile and that the majority will stay in the water phase rather than adsorbing to soil or sludge. For the chemical safety assessment a Koc value of 30 is anticipated.
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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