Dye|Dye intermediates|Fluorescent Brightener|pigment dye

Name:C.I.Fluorescent Brightener 251,C.I.406233

Molecular Structure: Stilbenes

C.I.Fluorescent Brightener 251,C.I.406233,CAS 61968-74-9,1076.93,C36H32N12Na4O14S4,Uvitex 2BT,Viophos DT

Molecular Formula:C₃₆H₃₂N₁₂Na₄O₁₄S₄

Molecular Weight: 1076.93

CAS Registry Number:61968-74-9

Manufacturing Methods :1,2-Bis(4-amino-2-sulfophenyl)ethene and 2,4,6-Trichloro-1,3,5-triazine (2 Moore) condensation, again and 3-Aminobenzenesulfonic acid (2 Moore) condensation, then with 2-Aminoethanol (2 Moore) condensation.

Properties and Applications:blue light purple. Used for cellulose fibre whitening, with low to medium affinity. Dragon’s suitable for dyeing and continuous pad dyeing.

List of Suppliers:

Rylux BSM (SBU Pigments and Dyes)

Tinopal 2BT ( Geigy Co. Ltd )

Uvitex 2BT( Ciba Specialty Chemicals Inc )

Viophos DT(Viochrom SA)