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No experimental data on the phototransformation of the substance in air are available. Based on estimation with the QSAR model AopWin phototransformation data were calculated for alpha-Terpinyl acetate, being the main constituent of Terpinyl acetate multi, and therefore representative for Terpinyl acetate multi too. Alpha-Terpinyl acetate undergoes in air rapid degradation after reaction with hydroxyl radicals or ozone. The DT50-values after reaction with hydroxyl radicals and ozone are 1.36 hours and 0.64 hours, respectively. Terpinyl Acetate gamma shows values of 1.11 hours and 0.23 h. These values are not used in the risk characterisation because these are not experimental values.

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