Dye|Dye intermediates|Fluorescent Brightener|pigment dye

Name:C.I.Fluorescent Brightener 48,C.I.40640

Molecular Structure: Ethyleneurea

C.I.Fluorescent Brightener 48,C.I.40640,CAS 6826-44-4,440.36,C15H10N2Na2O7S2

Molecular Formula:C₁₅H₁₀N₂Na₂O₇S₂

Molecular Weight: 440.36

CAS Registry Number:6826-44-4

Manufacturing Methods : Benzil (1 Moore) and urea (2.4 Moore) and Sodium bisulfate (1.8 Moore) mixture in heating under pressure, in 160 ℃ keep 10 hours, and the product sulfonation.

Properties and Applications:blue. Soluble in water. In neutral or weak acid dye bath used in protein fibre. the oxide and reductive stability. Chlorine bleaching fastness medium.

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