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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Description of key information

No simulation tests in water and sediment are available for propylene glycol methyl ether.

Key value for chemical safety assessment

Additional information

Propylene glycol methyl ether is readily biodegradable in freshwater with a low potential for adsorption to sediment. Based on the distribution modeling (Level III fugacity model), most of the substance released directly to water will remain in the water compartment and is expected to be biodegraded. The risk assessment shows that the PEC/PNEC ratios for sediment are clearly <1, indicating no need for further information or testing. According to REACH Annex IX requirements, sediment simulation testing shall only be considered for substances with a high potential for adsorption to sediment, hence a simulation test in water and sediment can be waived for propylene glycol methyl ether.