Registration Dossier
Registration Dossier
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EC number: 225-059-1 | CAS number: 4635-59-0
Endpoint summary
Administrative data
Description of key information
Additional information
Adsorption / desorption
Parent compound 4 -chlorobutyryl chloride and hydrolysis product 4 -chlorobutyric acid: Adsorption to solid soil phase is not expected.
However, the assessment of the adsorption potential of the parent compound may be of low relevance due to the rapid hydrolysis of the acid chlorid in aqueous solutions.
Henry's Law constant
Parent compound 4 -chlorobutyryl chloride: From the water surface, the substance will slowly evaporate into the atmosphere.
Hydrolysis product 4 -chlorobutyric acid: From the water surface, the substance will not evaporate into the atmosphere.
However, the assessment of the volatility of the parent compound may be of low relevance due to the rapid hydrolysis of the acid chloride in aqueous solutions.
Distribution modelling
Parent compound 4 -chlorobutyryl chloride: Over time, the substance will preferentially distribute into the compartments water (66.9%) and air (33.0%).
However, the model calculation may be of low relevance as the compound rapidly decomposes in water (t1/2<< 24 h).
Hydrolysis product 4 -chlorobutyric acid: Over time, the substance will preferentially distribute into the water (98.5%).
However, the model does not consider the ionic structure of the molecule at environmentally relevant pH conditions (pH 5 to pH 9; pKa value: 4.35 @ 25 °C). Therefore, the model may underestimate the distribution into water.
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