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Partition coefficient

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Description of key information

LogPow (estimated): < 0 at 20°C

Key value for chemical safety assessment

Additional information

Substance is a complex UVCB. Standard tests for this endpoint are intended for pure substances and are not appropriate for this complex substance.

 

The substance is a product obtained from wheat after wet extraction of proteins and starch and catalytic/enzymatic hydrolysis consisting mainly of hydrolyzed starch, proteins and fibers.

 

Overall water solubility was determinate to be 77 g/L at 20°C accordingly OECD105 test method and it appears to be not soluble in n-octanol by visual judgment.

 

Based on this information, it is scientifically reasonable to predict that the n-octanol/water partition coefficient (log Kow) will be low. Thus, according to section 1 of REACh (Regulation (EC) No 1907/2006) Annex XI, the n-octanol/water partition coefficient (required in Annex VII section 7.8) does not need to be conducted.

 

Moreover the known constituents of this UVCB substance are commonly very soluble in water and commonly not considered to bioaccumulate in the environment. Therefore, no bioaccumulation potential is expected from this UVCB substance and the log Kow is expected to be significantly smaller than 3 and consequently of no concern.

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