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EC number: 947-785-4 | CAS number: -
The substance is an UVCB substance. Due to its complex composition, methods for the experimental measurement of octanol-water partition coefficient (Kow) of fatty acids, tall-oil, reaction products with maleic anhydride and triethylenetetramine are technically not applicable. On the basis of the high solubility in water (fully miscible in the range of 5 - 95% by weight) and the chemical nature, Kow value for the substance is expected to be low. Estimated Log Kow value for the main constituents have been estimated using KOWWIN (v.1.68, September 2010; US EPA) and were for the three main components -1.56, 1.2 and 4.72, respectively. Considering the ratios of components this results in a weighted value for log Pow of 1.74, rounded up conservatively to 2, which is the value uesed for hazard and risk assessment. It should be noted that higher amounts of maleic anhydride as starting material do result in lower log Pow values. The log Pow value conservatively estimated (~2) is in good alignment with the observation of the substance being fully miscible in water.
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