Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Stability :

Phototransformation in Air :

The atmospheric oxidation half life of α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol (Solvent Blue 4) (containing less than 0.1% Michler's Ketone) was estimated using level III multimedia model it indicates that α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol is not persistent in air medium as the half life period of α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol in air is only 0.04 days. From this it is concluded that α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol is rapidly phototransformed in air.

Hydrolysis :

Hydrolysis Rate Constant of α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol (Solvent Blue 4)

was estimated to be 0.0000000004051992 cm3/molecule-sec at half life of 19.006 Min.

Phototransformation in Water :

No experimental data available. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X requirement), no further testing is considered necessary.

Phototransformation in Soil :

No experimental data available. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X requirement), no further testing is considered necessary.