Registration Dossier
Registration Dossier
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EC number: 607-985-1 | CAS number: 26678-02-4
Endpoint summary
Administrative data
Description of key information
Additional information
According to a Mackay Level I model calculation the main target compartment for the copolymer of hexanedioic acid and 1,5-pentanediol will be the hydrosphere (91 %) followed by soil and sediment (4-5 % each). This calculation also reflects very low volatility from surface waters. With a calculated Koc of 10 l/kg, the sorption potential to soil or sediment organic matter is expected to be very low (Blume scale).
The QSAR calculated rate constant for the OH sensitized photodegradation of the non-cyclic diester of hexanedioic acid with 1,5-pentanediol is approximately 2.40E-11 cm³/(molecule * s). At 500,000 OH radicals / cm³ (approximate 24-hour mean in central) this corresponds to a half-life of 16 hours. Biodegradation was observed in a test on inherent biodegradability and is expected to be the main mechanism of removal from the environment. The partition coefficient 1-octanol/water of the main constituent is 2.79, indicating an insignificant potential for bioaccumulation.
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