Dye|Dye intermediates|Fluorescent Brightener|pigment dye

Name:C.I.Pigment Blue 63,C.I.73015

Molecular Structure: Indigo

C.I.Pigment Blue 63,C.I.73015,CAS 16521-38-3,422.39,C16H10N2O8S2,Conalake Indigotine,Indigo CarmineLake

Molecular Formula:C₁₆H₁₀N₂O₈S₂

Molecular Weight: 422.39

CAS Registry Number:16521-38-3

Manufacturing Methods :3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- with concentrated SULFURIC ACID or trace SULFURIC ACID sulphonate, then into aluminum salt.

Properties and Applications:blue. Soluble in water is blue, slightly soluble in alcohol. In concentrated sulfuric acid for deep blue purple, blue for diluted. Pigment solution to join caustic soda for the green to yellow green. With C.I.Acid Blue 74 the same chemical structure.

List of Suppliers:

Ariabel Blue 11.42 ( Durand & Huguenin SA )

Conalake Indigotine(Proquimac Color)

Covalac Blue W6504( Les Colorants Wackherr )

FD&amp C Blue 2 lake ( Pointing Ltd )

Indigo Carmine Lake (Pointing Ltd)

Indigo CarmineLake 300550 ( Warner-Jenkinson Co )

San-Ei Gen Indigo Carmine Aluminium Lake ( Kaseihin Kogyo Kyokai )