Registration Dossier
Registration Dossier
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EC number: 700-714-9 | CAS number: 1254469-57-2
Endpoint summary
Administrative data
Description of key information
Additional information
Stability
The half-lifes of the test substance at pH 7 and pH 9 were determined to be:
- at 20 °C: 1203 h = 50 d (pH 7) and 17532 h = 730 d (pH 9).
- at 25 °C: 679 h = 28 d (pH 7) and 8331 h = 347 d (pH 9).
The hydrolysis experiments with the test substance at pH 4 showed no pseudo-first order kinetic. Therefore it can be assumed that at pH 4 there is no hydrolysis reaction.
Biodegradation
The degree of biodegradation of the test substance after an exposure period of 28 days was determined to be 20-30 % CO2/ThCO2. Therefore, the test substance is regarded to be inherently biodegradable.
Transport and distribution
The performance of an adsorption/desorption screening test is scientifically not justified. REACh Regulation (EC) No 1907/2006, Annex VII, Sect.9.3.1, Col. 2, states as follows:
"9.3.1. The study does not need to be conducted if:
– based on the physicochemical properties the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol water partition coefficient); or
– the substance and its relevant degradation products decompose rapidly."
The test substance has a very low n-octanol/water-partition coefficient (log Kow = <-2.4 at 23 °C). Therefore, the substance is expected to have a low potential for adsorption. Consequently, the adsorption/desorption screening test is scientifically not justified.
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