Registration Dossier
Registration Dossier
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EC number: 274-307-5 | CAS number: 70084-85-4 The complex residuum produced by the distillation of tallow fatty acids. It contains primarily glycerides, C16-20 saturated fatty acids, C36 dimer acid, C54 trimer acid and heavier polymeric acids.
Endpoint summary
Administrative data
Description of key information
Additional information
No experimental data are available on the hydrolytic stability of the category members Fatty Acids. Due to the ready biodegradability of the category members, hydrolysis testing is not required. Based on manufacturing experience with liquid cleaning products, it is known that Fatty Acids are stable in water (SIDS, 2009).
Based on EPI suite modelled data assuming a hydroxyl reaction at 25°C and a hydroxyl radical concentration of 1.5x106/cm³, aliphatic acids are subject to photodegradation in air (SIDS, 2009). The photodegradation half-lives in air decrease with increasing chain lengths and range from 15.4 hours for octanoic acid (C8) to 5.7 hours for octadecanoic acid (C18).
Direct photolysis is not expected to contribute appreciably to the overall breakdown rate in water and soil, since the environmental degradation of these substances is predominantly of biotic nature.
Reference: SIDS Initial Assessment Report FOR SIAM 29, 2009
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