Registration Dossier
Registration Dossier
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EC number: 220-667-3 | CAS number: 2855-19-8
Endpoint summary
Administrative data
Description of key information
Fate and Stability:
The test substance was tested in an new OECD 301 B test (2014). The 10d window was shortly failed with > 50% after 10d. After 28d a degradation of 60-70% was recorded. Based on the available test result the test substance is regraded to readily biodegradable, but failling the 10d window.
The stability in water was investigated in a hydrolysis test according to OECD test guideline 111.
Based on measured data and assuming first order reactions, hydrolysis rates and half-lives for other temperatures were determined at pH 4, pH 7 and pH 9 according to the Arrhenius equation.
By plotting the natural logarithm of the rate constants against the reciprocal of the temperature (K), the rate constants and half-lives at 20 °C and 25 °C were obtained by extrapolation.
Half-lives at 20 °C and 25 °C, calculated from the measured values:
pH value T emperature t½ [h]
pH 4 20 °C 117.9
pH 4 25 °C 77.1
pH 7 20 °C 183.2
pH 7 25 °C 142.2
pH 9 20 °C 187.9
pH 9 25 °C 157.9
In the context of the OECD 111 test furthermore, possible hydrolysis product were determined. The content of the hydrolysis product 1,2-dodecanediol in the combined extracts was determined to be: 4.8 mg/L
Additional information
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