A mixture of isomers of: 1,1'-[(3,5(or 2,4 or 4,6 or 2,6)-dihydroxy-o(or m or p)-phenylene)bis(azo-meta-phenyleneazo{1-[3-(dimethylamino)propyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxopyridine-5,3-diyl})]dipyridinium-dichloride-dihydrochloride; 1-(1-[3-(dimethylamino)propyl]-5-{3-[x-(4-{1-[3-(dimethylamino)propyl]-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-pyridinio-3-pyridylazo}phenylazo)-2,4(or 2,6 or 3,5 or 4,6)-dihydroxyphenylazo]phenylazo}-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridyl)pyridinium-dichloride-dihydrochloride (where x is variable)

Bioaccumulation: aquatic / sediment

Description of key information

Waiving.

Key value for chemical safety assessment

BCF (aquatic species):

3.162 L/kg ww

Additional information

According to column 2 of Annex IX of the REACH Regulation (EC 1907/2006), the study on bioaccumulation does not to be conducted if the test item has a low bioaccumulation potential as indicated by a log Kow < 3. As test substance has a log Kow < 0, the study on bioaccumulation is not run.

A default value for non-hydrophobic substances, i.e. BCF = 3.162 l/kg ww, is used for the CSA.