Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Stability

Phototransformation in air

This is not a standard information requirement in Annex IX of Regulation (EC) No 1907/2006.

 

Hydrolysis

According to Annex VIII (Paragraph 9.2.2, Column 2) of the REACh regulation 1907/2006 a test on hydrolysis does not need to be conducted if the substance is readily biodegradable or highly insoluble in water. In addition alcohols are generally resistant to aqueous environmental hydrolysis. Therefore, pentan-1-ol is not expected to hydrolyze in the environment.

 

Phototransformation in water

This is not a standard information requirement in Annex IX of Regulation (EC) No 1907/2006.

 

Phototransformation in soil

This is not a standard information requirement in Annex IX of Regulation (EC) No 1907/2006.

 

Biodegradation

Biodegradation in water: screening test:

The ready biodegradability of the test substance was examined according to ISO DIS 9439 (Ultimate Aerobic Biodegradability - Method by Analysis of Released Carbon Dioxide). The test substance was degraded by 80 - 90 % (CO2 evolution) and 90 – 100 % (DOC removal) after 28 days.

The ready biodegradability of the test item was assessed in a read across category approach based on grouping of substances. The surrogate test substances were found to be ready biodegradable. Thus, the pentanols are considered as readily biodegradable.

 

Biodegradation in water and sediment

The substance is considered as readily biodegradable. Therefore, no further testing on biodegradation is required according to Annex IX (Paragraph 9.2.1, Column 2) of the REACh regulation 1907/2006. 

 

Biodegradation in soil

The substance is considered as readily biodegradable. Therefore, no further testing on biodegradation is required according to Annex IX (Paragraph 9.2.1, Column 2) of the REACh regulation 1907/2006. 

 

Bioaccumulation

Bioaccumulation: aquatic/sediment

Significant accumulation of the test substance in organisms is not to be expected. For pentan-1 -ol was determined a log Kow= 1.51 (25°C) according to Sangster, 2006.

 

Bioaccumulation terrestrial

Data on terrestrial bioaccumulation in soil are not required for REACh registration.

 

Transport and distribution

Adsorption/Desorption

Based upon a calculated log Koc = 0.8 adsorption to solid soil phase is not expected.

 

Henry´s Law constant

Pentan-1-ol will slowly evaporate from the water surface into the atmosphere. Henry´s law constant at 25°C was estimated to be 1.34 Pa*m3/mole by SRC HENRYWIN v3.10 [BASF SE 2010].