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The vapour pressure of the test item Commercial name: CosmeGreen ES1822+Substance name: Reaction mass between glycine betaine, ethanesulphonic acid, octadecan-1-ol, docosan-1-ol and eicosan-1-ol was determined at nine different tempera-tures (30, 45, 60, 75, 90, 105, 120, 135 and 150 °C) according to OECD 104 resp. EU A.4 using the effusion method (weight loss). Experiment 1 and 6 - 9 (nominal temperature 30 and 105 – 150 °C) showed no reproducible weight loss. When visible contaminations, caused by explosive evaporation of the test item, were observed, the cells were meticulously cleaned and weighed. This weight was used as initial weight for the subsequent measure-ments. To avoid bias, these measurements were not used for calculations.Four experiments could be evaluated as they showed relevant and reproducible weight loss. All evaluated experiments showed good repeatability, giving relative standard deviations of less than 20 % (limit value from the guideline 30 %) and good correlation.Therefore, the result of the test can be considered valid.
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