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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable: 93.1% (CO2 evolution) in 28 days (OECD 301 B)

Key value for chemical safety assessment

Additional information

Two ready biodegradation studies are available for 2,2-dimethyl-1,3-propanediyl dioctanoate (CAS No. 31335-74-7).

The key ready biodegradability study carried out with 2,2-dimethyl-1,3-propanediyl dioctanoate (CAS No. 31335-74-7), was performed following the OECD Guideline 301 B (Bouillon, 1999). Activated sludge was used as inoculum. During the 28-day test period, biodegradation reached 93.1%, based on CO2 evolution, and the 10-day window criterion was met.

For the supporting study carried out with 2,2-dimethyl-1,3-propanediyl dioctanoate (CAS No. 31335-74-7), only a short abstract is available. The study was conducted according to OECD Guideline 301 B (Windeatt, 1995). At the end of the 28-day exposure period, 82% biodegradation was reached, based on CO2 evolution.

In conclusion, 2,2-dimethyl-1,3-propanediyl dioctanoate (CAS No. 31335-74-7) can be considered as readily biodegradable according to OECD criteria.