Registration Dossier

Administrative data

Link to relevant study record(s)

Description of key information

α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol (Solvent Blue 4) (containing less than 0.1% Michler’s Ketone)  was not found to be oxidising since 615 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol (Solvent Blue 4) was not found to be oxidising since 615 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol.

Justification for classification or non-classification

α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol (Solvent Blue 4) was found to be poorly oxidising and hence considered to be non-oxidising for the purpose of classification.