Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Phototransformation in air

After evaporation or exposure to air, valeryl chloride and its hydrolysis product valeric acid will be slowly degraded by photochemical processes.

This estimation refers to dry air. In mist, rain, droplets and aerosols, hydrolysis will be the major fate process of the acid chloride due to the short half-life in aqueous solution. Therefore the estimate for valeryl chloride may be of low relevance.

Hydrolysis

In contact with water valeryl chloride will hydrolyse rapidly.

Biodegradation

As the parent compound rapidly hydrolyses in aqueous system the assessment of the biodegradability based on the hydrolysis product valeric acid, which is readily biodegradable (according to OECD criteria).

Bioaccumulation

For the hydrolysis product valeric acid, significant accumulation in organisms is not to be expected.

Adsorption / desorption

Adsorption of the hydrolysis product valeric acid to solid soil phase is not expected.

Henry`s Law constant

The hydrolysis product valeric acid will not evaporate into the atmosphere from the water surface.

Distribution modelling

Over time, the hydrolysis product valeric acid will preferentially distribute into the compartment water (95.9%) and slightly into the compartment air (3.7%).

Additional information