Registration Dossier
Registration Dossier
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EC number: 405-430-6 | CAS number: 65143-89-7
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
DOWFAX 8390-D surfactant is hydrolytically stable.
Key value for chemical safety assessment
Additional information
DOWFAX 8390 -D surfactant is the dry form of a diphenyloxide based anionic surfactant which consists of disodium di- and monohexadecyldiphenyloxide disulfonate. The material was assessed on its hydrolytic stability at different pH values (determination of the hydrolysis as a function of the pH) according to the Directive 92/69/EEC, part C.7 and OECD Guideline Number 11 1. The hydrolysis study was conducted at 50 degree C at pH of 4.0, 7.0 and 9.0 without the presence of oxygen in the reaction vessel. The concentration of the test substance was determined by High Pressure Liquid Chromatography (HPLC). DOWFAX 8390 -D surfactant concentration did not decrease after incubation of up to 5 days. Correspondingly, the material is hydrolytically stable.
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