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Phenol, paraalkylation products with C12-rich branched olefins derived from propene oligomerisation, reaction products with sulphur monochloride and decene, reaction products with Benzoic acid, 2-hydroxy-,C14-18 alkyl dervis., polybutenyl benzenesulphonic acid, carbon dioxide and calcium hydroxide
EC number: 903-162-9 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Due to the low water solubility (<0.5 mg/L) and UVCB nature of the test item a sufficient analytical procedure could not be developed employing GC-FID. Therefore the presence of hydrolysis could not be determined.
Key value for chemical safety assessment
Additional information
Standard tests for hydrolysis are not typically appropriate for the test item since EC-903-162-9 is present as a complex reaction product of unknown and variable composition. Nevertheless, the chromatographic end-point for the hydrolysis test was designed to determine the concentration of the test item’s principal hydrocarbon components. The hydrolysis of EC-903-162-9 was assessed in aqueous buffers at pH 4, 7 and 9 at 50 ± 0.5 °C. After 5, 1, 0.1 and 0 days the samples were extracted and analysed.
Due to the low water solubility (<0.5 mg/L) and UVCB nature of the test item a sufficient analytical procedure for these concentrated organic samples could not be developed employing GC-FID. Therefore the presence of hydrolysis could not be determined.
REACH Regulation (EC) 1907/2006 Annex VIII, Section 9.2.2.1, column 2 states that Hydrolysis testing does not need to be conducted if the substance is highly insoluble in water. OECD Guidance on testing of difficult substances and mixtures (Assessment Nr. 23 (ENV/JM/MONO(2000)6)), referenced by OECD Guideline 111, defines a poorly (or sparingly) water-soluble substance as one with a limit of water solubility of <0.1 g/L.
The solubility of the test material is substantially lower than this limit. With such low water solubility, hydrolysis is an unlikely mode of abiotic degradation for this UVCB substance.
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