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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 941-788-4 | CAS number: -
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
not applicable.
However, a transformation/dissolution tests according to OECD 29 was conducted to investigate the possible release of the most ecotoxicological relevant individual inorganic building blocks of this substance (i.e., the elements Zn and Sn) in aqueous media.
The solubilities at 20°C were found as follows:
- determination via tin (Sn):
< 0.3 mg/L with a loading rate of 0.2 g/L
0.5 mg/L with a loading rate of 1.0 g/L
- determination via titanium (Ti):
< 0.5 mg/L with a loading rate of 0.2 g/L
0.9 mg/L with a loading rate of 1.0 g/L
- determination via tungsten (W):
6 mg/L with a loading rate of 0.2 g/L
35 mg/L with a loading rate of 1.0 g/L
- determination via zinc (Zn):
0.8 mg/L with a loading rate of 0.2 g/L
1.2 mg/L with a loading rate of 1.0 g/L
Key value for chemical safety assessment
Additional information
The determination was conducted by flask method according to OECD Guideline 105. The solubilities of test substance were quantified on tin, titanium, tungsten and zinc using inductively coupled plasma mass spectrometry (ICP-MS) after automated acid digestion.
The test item consists of a mixture of different metal oxides. The water solubility can therefore only be investigated via determination of dissolved amounts of the metals contained in the test item.
A transformation/dissolution test according to OECD 29 was conductd. The screening test showed that the most relevant pH with respect to ecotoxicology is at pH 6, i.e. where the highest release of the most relevant metal (Zn) was measured. Therefore, it was decided to conduct the acute full test at pH 6. The worst-case, i.e. the highest concentrations within the 7 days study period (three replicates) were 0.011 and < 0.001 mg/L for Zn and Sn at a loading rate of 1 mg/L. At at loading rate of 10 mg/L the maximum levels were 0.028 mg/L for Zn and 0.001 mg/L for Sn. For the highest loading rate (100 mg/l), the higest concentrations for Zn and Sn were 0.30 and 0.002 mg/L for Zn and Sn, respectively.
The results of the full acute transformation/dilution test indicates that no additional Zn is released with increasing study period. Thus a chronic 28 day test at 1 mg/l loading was not conducted.
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.
