Registration Dossier
Registration Dossier
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EC number: 402-950-5 | CAS number: 87826-41-3 CLEARLITE NU 005; DISORBENE M; GENISET MD; GLC NU 005; MILLAD 3940; NU 005
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
At 25°C after seven days GEL-ALL-MD appeared to be stable in both neutral and alkaline solution but unstable under acidic conditions. No prediction is made for the behaviour of the test material over a longer period.
Key value for chemical safety assessment
Additional information
The hydrolysis characteristics of Gel-All-MD have been studied at 25°C, under abiotic conditions. Solutions at three pHs (approximately pH 4, 7 and 9) were analysed over a seven day period. A significant and consistent drop in concentration was only observed under acidic conditions. This indicates that the test material is subject to acid catalysed hydrolysis.
At pH 3.95 a 45% drop in concentration was observed over a 7 day interval:
Initial concentration: 0.74 mg/l solution
final concentration: 0.41 mg/l solution
The reaction was shown to obey pseudo-first order kinetics and the following parameters were obtained:
observed rate constant: 3.50 x 10-3/h
half life: ca 200 hours
Gel-All-MD was found to be stable over seven days at pH 7 and at a pH of 9.06
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