Registration Dossier
Registration Dossier
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EC number: 701-236-3 | CAS number: -
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
Description of key information
Bioaccumulation data are not available for Distilled tall oil, magnesium salt. However, measured and calculated BCF values area available that can be read across to provide information on the rosin and fatty acid components of the substance.
Based on read across the BCF of Fatty acids, tall oil, magnesium salts is considered to be between 3.162 and 129 L/kg. The BAF value is considered to be between 1.47 and 694000 L/kg.
Key value for chemical safety assessment
Additional information
No bioaccumulation data are available for Distilled tall oil, magnesium salt.
Measured and calculated BCF values are available for rosin, hydrogenated rosin and rosin salts and these are read across to the rosin component of Fatty acids, tall oil, magnesium salts. A study is available with measured BCF values for various resin acids (Niimi & Lee, 1992). Rainbow trout (Oncorhynchus mykiss) were exposed to nine resin acids that included abietic, dehydroabietic, chlorodehydroabietic, dichlorodehydroabietic, neoabietic, pimaric, isopimaric, sandaracopimaric, and palustric acids. Bioconcentration factors (BCFs) for these acids ranged from 23 to 129 among fish that were exposed to mean waterborne concentrations of 0.7 to 3.6 ug/L for 20 days. Total free and conjugated acid concentrations ranged from 1 to 3 mg/kg on a whole body basis. Elimination rates were also monitored over a 10-day depuration period, although no detectable levels were observed. Based on initial chemical concentrations, it was concluded that the half-lives of these acids were < 4 days.
BCF and BAF values were calculated for rosin, hydrogenated rosin and rosin salts using QSAR estimation software (EPISUITE BCFBAF v3.00). The calculated BCF values range from 3.162 to 56.23 L/kg ww and calculated BAF values range from 1.47 to 694000 L/kg (Oak Ridge National Laboratory, 2010).
BCF and BAF values were also calculated for Fatty acids C18-(unsaturated) lithium salts using USEPA's BCFBAF v3.00 software, based on structures for three fatty acids. The BCF was calculated to be 56.2 L/kg (log BCF 1.75). The BAF was calculated to be between 40800 to 159000 L/kg (log BAF 4.61 to 5.2).
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