Registration Dossier
Registration Dossier
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EC number: 695-022-6 | CAS number: 473278-76-1
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
In accordance with column 2 of Annex IX 9.3.2 of Regulation (EC) 1907/2006, bioaccumulation testing in aquatic species is not required as the substance has a low potential for bioaccumulation (the log Kow is < 3).
The partition coefficient log Pow = 1.9 was determined at pH 2.0 and 25 °C. Since the pKa of the test substance is 3.2, hydrochloride buffer solution (pH 2.0) was used to suppress dissociation of the substance (OECD Guideline 107, shake flask method). Based on the the measured partition coefficient of the unionized form at pH 2 and pKa of the substance following partition coefficients for the (partly) dissociated form are estimated:
log D (pH 4): ca. 1.0
log D (pH 7): ca.-1.9
log D (pH 9): ca. -3.9
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