Registration Dossier
Registration Dossier
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EC number: 209-711-2 | CAS number: 591-27-5
Endpoint summary
Administrative data
Description of key information
Hydrolysis:
The test item was observed to be hydrolytically stable at pH 4 and pH 7. Degration of the test item was observed at pH 9 with half-lives measured in the range of 5-190 days. Reaction rate constants k (obs) were determined to be 0.0036 d-1 at 20°C, 0.0262 d-1 at 50°C and 0.1527 d-1 at 60°C with corresponding half-lives of 190 d, 26 d and 5 d, respectively. By considering half life values at differnt temperature it is concluded that test chemical is negligible to slowly hydrolysable.
Additional information
Hydrolysis:
The determination of the Abiotic Degradation of test chemical (Hydrolysis as a Function of pH) was conducted according to OECD 111 and GLP. Samples were incubated in the dark, at 50° for the pre-test and 20, 50 and 60°C for the main test. The test concentration was in the range of 209-247 mg/L. The final concentration did not exceed 0.01 M in water and the content of organic solvent in the aqueous phase was kept ≤ 1% v/v. The test chemical was observed to be hydrolytically stable at pH 4 and pH 7. After 5 days of incubation at 50°C recovery values of the test chemical were 99% of the applied concentration. Degradation of the test chemical was observed at pH 9 with half-lives measured in the range of 5-190 days. Reaction rate constants k (obs) were determined to be 0.0036 d-1 at 20°C, 0.0262 d-1 at 50°C and 0.1527 d-1 at 60°C with corresponding half-lives of 190 d, 26 d and 5 d, respectively. By considering half life values at differnt temperature it is concluded that test chemical is negligible to slowly hydrolysable.No further characterisation or identification of unknown transformation products was conducted.
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