Registration Dossier
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EC number: 225-896-2 | CAS number: 5137-55-3
Endpoint summary
Administrative data
Description of key information
Hydrolysis:
The hydrolysis rate constant of test chemical obtained was in range of 0.0285 - 0.077 L/mol/sec by structure estimation method and reaction was second order reaction. The half life of hydrolysis obtained at pH 7 was in range of 2.8 - 7.7 years and at pH 8 was in range 104- 280 days. Since half life of hydrolysis at both pH is more than 10 days so it is concluded that test chemical shows negligible hydrolysis.
Additional information
Hydrolysis:
Half life of Hydrolysis of test chemical was estimated for Methyltrioctyl ammonium chloride(CAS no. 5137 -55 -3) using experimental data from structurally and functionally similar read across chemicals. The studies are as mentioned below:
In first experimental study the hydrolysis rate constant of chemical obtained was 0.0285 L/mol/sec by structure estimation method and second order reaction. The half life of hydrolysis obtained at pH 7 was 7.7 years and at pH 8 was 280 days. Since half life of hydrolysis at both pH is more than 10 days so it is concluded that test chemical shows negligible hydrolysis.
In next study the half-life and base catalyzed second order hydrolysis rate constant was determined using a structure estimation method of the test chemical . The second order hydrolysis rate constant was determined to be 0.077L/mol-sec with a corresponding half-lives of 2.8 yrs and 104 days at pH 7 and 8, respectively. Based on the half-life values, it is concluded that the chemical is not hydrolysable.
By considering results of both the studies mentioned above it can be concluded that test chemical Methyltrioctyl ammonium chloride is not hydrolysable.
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