Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Hydrolysis

Parent compound pivaloyl chloride (CAS 3282-30-2): In contact with water, the substance will hydrolyse rapidly.

Hydrolysis product pivalic acid (CAS 75-98-9): According to structural properties, hydrolysis is not probable.

 

Phototransformation in air

After evaporation or exposure to air, the parent compound pivaloyl chloride (CAS 3282-30-2) and its hydrolysis product pivalic acid (CAS 75-98-9) will be slowly degraded by photochemical processes.

 

Biodegradation

Pivaloyl chloride (CAS 3282-30-2) rapidly hydrolyses to form pivalic acid (CAS 75-98-9). The hydrolysis product pivalic acid is not readily biodegradable (according to OECD criteria).

 

Bioaccumulation

Significant accumulation of pivaloyl chloride (CAS 3282-30-2) and its hydrolysis product pivalic acid (CAS 75-98-9) in aquatic organisms is not to be expected.

 

Adsorption

Parent compound pivaloyl chloride (CAS 3282-30-2): Adsorption to the solid soil phase is not expected.

Hydrolysis product pivalic acid (CAS 75-98-9): Adsorption to the solid soil phase is not expected.

 

Henry's Law Constant

Parent compound pivaloyl chloride (CAS 3282-30-2): From the water surface the substance will rapidly evaporate into the atmosphere.

Hydrolysis product pivalic acid (CAS 75-98-9): From the water surface the substance will not evaporate into the atmosphere.

 

Distribution modelling

Parent compound pivaloyl chloride (CAS 3282-30-2): Over time, the substance will preferentially distribute into the compartment air (82.5 %) and slightly into the compartment water (17.5%).

Hydrolysis product pivalic acid (CAS 75-98-9): Over time, the substance will preferentially distribute into the compartment water (75.6 %) and slightly into the compartments air (23.6 %), sediment (0.4 %) and soil (0.4 %).

 

 

As the parent compound pivaloyl chloride (CAS 3282-30-2) rapidly hydrolyses in contact with water and forms pivalic acid (CAS 75-98-9), the assessment of environmental fate and pathways is predominantly based on the data for the hydrolysis product.