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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 270-478-5 | CAS number: 68442-22-8
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Results water solubiltiy of the substance is 54.2 mg/L ± 12.8 at 20 deg. C.
Key value for chemical safety assessment
- Water solubility:
- 54.2 mg/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of the test substance was determined by the shake flask method according to guidelines in OECD 105.
Quantitation of the water soluble components in the ZDDP (zinc dialkyldithiophosphate) submission substance was perfomred by GC-MS (gas chromatography-mass spectrometry) following derivatization of the water soluble portion to halogenated derivatives with pentafluorobenzyl bromide CASRN 1765 -40 -8. The derivitization procedure is described in "Structural determination of zinc dithiophosphates in lubricating oils by gas chromatography-mass spectrometry with electron impact and electron-capture negative ion chemical ionization" Journal of Chromatography A. 905(2001) 207 -222. The derivatization process cleaves the intact ZDDP (zinc dialkyldithiophosphate) molecule in two replacing the zinc atom with two pentafluorobenzyl branches forming two pentafluorobenzyl phosphorodithioic acid molecules, each with two alkyl groups, which can be separated and identified by GC-MS.
Results of the study indicate the water solubiltiy of the substance is 54.2 mg/L ± 12.8 at 20 deg. C. ZDDP components where alkydithiophosphate ligands contained C4 (isobutyl) groups accounted for the bulk of the composition of the water solubles ( approx. 93% by GC area).
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.
