Registration Dossier
Registration Dossier
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EC number: 480-340-8 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
hydrolytically stable at pH 4, 7 and 9.
Key value for chemical safety assessment
Additional information
The abiotic degradation of the aqueous solutions of the substance was evaluated according to the OECD Guideline 111 and EU method C.7. In the preliminary test, three test solutions were prepared for each pH, by mixing the solution of the test item in sterilised water with mixed sterilised buffer solutions (nominal pH values: 4, 7 and 9); one of them was analysed directly while the other two were incubated at 50 ± 0.5 °C for a period of ten days. Samples were taken at the beginning, after 5 and 10 days.
After the evaluation of the dissociation it was concluded that the substance dissociates spontaneously to triethanolamine, sodium and perchlorate; since sodium and perchlorate are known to be stable in water only the hydrolysis behaviour of triethanolamine was examined.
The analysis of the samples showed no significant changes in the concentration of triethanolamine within five days or even within 10 days. In the preliminary test, after 5 days no decrease of triethanolamine was observed in any of the tested pH, while after 10 days a decrease of 0.22 % was observed only at pH 7.
The substance is hydrolytically stable at pH 4, 7 and 9.
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