Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Under aerobic conditions 81.7 -106.8% biodegradation was found for 100 mg/l monopropylene glycol tested according to OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test) (West et al. 2007) and in another OECD 301 F study 81 -97% biodegradation was found for 84 mg/l monopropylene glycol tested under aerobic conditions (The Dow Chemical Company, 1999). In further assessment monopropylene glycol is considered ready biodegradable.

Significant biodegradation was found in a simulation test with natural seawater after 64 days (West et al. 2007). When released into a soil environment monopropylene glycol is expected to biodegrade (98% after 105 days) (The Dow Chemical Company, 1986).

Simulation studies with sediment are not available.

The rate constant used in the assessment are (calculated with EUSES):

 

Degradation in the STP

24 d-1

Biodegradation in surface water

0.0462 d-1

Biodegradation in sediment

2.31E-03 d-1

Biodegradation in soil

0.0231 d-1