Registration Dossier
Registration Dossier
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EC number: 629-679-7 | CAS number: 42482-06-4
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The substance undergoes rapid hydrolysis at ambient temperatures and environmental pH levels, as determined in a test conducted according to OECD Guideline 111.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 4 min
- at the temperature of:
- 25 °C
Additional information
In the study entitled “OSA Determination of the Abiotic Degradation of the Test Substance by Hydrolysis at Three Different pH Values Following OECD Guideline 111, The Official Journal of the European Communities L 142/518 Method C.7 and OPPTS Guideline 835.2120 and the Estimation of Water Solubility”(Lian, 2012) a preliminary Tier 1 study was not conducted since structurally-similar substances are known to be hydrolytically unstable at pH 7 conditions and at 50 °C (branched C12-alkenyl succinic anhydride, CAS No. 26544-38-7).
At pH 7.0, half-lives were determined to be 8.3, 4.0 and 2.0 minutes at 15, 25 and 35 °C, respectively. The calculated half-life based on the Arrhenius Equation at 25 °C was 4.0 minutes at pH 7.0.
Based on these results, aqueous abiotic hydrolysis would be expected to contribute significantly to the degradation of the test substance at pH 7.0.
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