Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Proprionic anhydride rapidly hydrolyses to proponic acid in contact with water. Therefore data for biodegradation is based upon studies with propionic acid. Propionic acid is readily biodegradable (according to OECD criteria).

Rate constants:

 

Degradation rate in water: 4.7*10-2[d-1]1

Degradation rate in soil: 2.31*10-2 [d-1]2

Degradation rate in sediment: 2.31*10-3 [d-1]3

Degradation rate in air: 0.060 [d-1]4

 

1According to Regulation (EC) No 1907/2006 [European Communities 2006], RIP 3.2-2, Chapter R.16, table R.16-7, page 41

2Calculated according to Regulation (EC) No 1907/2006 [European Communities 2006], RIP 3.2-2, Chapter R.16, equitation R.16-20, page 43

3Calculated according to Regulation (EC) No 1907/2006 [European Communities 2006], RIP 3.2-2, Chapter R.16, equitation R.16-19, page 43

4Calculated from atmospheric half-life estimated by AOPWIN v1.92