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Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Selected physico-chemical parameters and representative for environmental fate


Terpene hydrocarbon alcohols have the following constituent types of substances: Solely hydrocarbons-terpene type, Alcohol-type, Ketone-type and Ether-type all having a saturated or unsaturated cyclic hydrocarbon backbone. For Environmental fate, the Solely hydrocarbons present the more extreme values and data on Terpinolene is used for the risk assessment.  


Abiotic degradation:


Air: No experimental data on the phototransformation of the substance in air are available. Based on estimation with the QSAR model AopWin (v1.92) using Terpinolene as a key constituent, in air the substance undergoes rapid degradation after reaction with hydroxyl radicals with DT50 values of 0.64 hours. Degradation after reaction with ozone radicals is also rapid with DT50 values of up to ca. 10 minutes. This indicates that the substance is not a long-range transported chemical in air according to the UNECE criteria (http://www.unece.org/fileadmin/DAM/env/documents/2000/ece/eb/ece%20eb%20air.60.e.pdf). These half-lives will not be used for the CSA because these are calculated and not experimental values. Furthermore, the substance does not have an ozone depletion potential because it does not contain halogens and does not have the potential to reach the stratosphere (EU CLP (EC no. 1272/2008 and its updates)).


Water: The hydrolysis endpoint is waived as the substance is qualified as readily biodegradable. The constituent-types do not have hydrolysable groups, a hydrolysis half-life of 1 year is used.


Biotic degradation:


The biodegradability is assessed based on read-across from the close structural analogue Terpineol multi, and the substance qualified as readily biodegradable in an OECD TG 310 study, meeting the 10 -day window.


Bioaccumulation:


Bioaccumulation in aquatic and terrestrial species is based on the selected log Kow of 4.33 and based on this the calculated BCF values). The BCFs for aquatic and terrestrial organisms were calculated using QSARs of Veith et al. (1979) and Jager (1998), both incorporated in the EUSES model, and yielded values of 956 and 257 L/kg ww, respectively.


Transport and distribution:


The Koc is calculated to be 4050 L/kg based on the Koc-QSAR for 'predominantly hydrophobics' incorporated in EUSES, with the log Kow of 4.33 as input.

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