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Environmental fate & pathways

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The substance tends to hydrolyse relatively quickly at pH 7 and 25 °C with a half-life for the hydrolysis reaction of 86 hours. The hydrolysis is much slower at pH 4 and 25 °C (7516 hours) and pH 9 and 25 °C (3063 hours). The substance is more easily hydrolysed at elevated temperatures that are often applied in dyeing processes: the half-life for hydrolysis at 50 °C is 337 hours at pH 4, 2.5 hours at pH 7 and 94 hours at pH 9.


The substance has a negligible vapour pressure and will not partition into the atmosphere. Phototransformation in air is not a relevant degradation pathway for FAT 40841/A TE. The phototransformation in water has not been studied. It may expected, though, that phototransformation of the substance in water may occur under environmental conditions as FAT 4084/A TE absorbs light in the wave length spectrum of sunlight.