disodium 1-[[[1,1'-biphenyl]-4-ylcarbonyl]amino]anthracene-9,10-diyl disulphate

Preparation

(a) in the presence of Pyridine, with Chlorosulfonic acid treatment C.I. 60530 leuco; (b) used in Pyridine?metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate) processing C.I. 60530. The above two kinds of circumstances are through with alkali, filter out the insoluble,, remove Pyridine?and salting-out. The preparation of the C.I. 60530 are as follows: 1-Aminoanthracene-9,10-dione and 4-Phenylbenzic acid?in Thionyl chloride under the existence of condensation

Properties and Applications

colourful green light yellow. Light yellow evenly powder. Soluble in water, light and acid in under the action of easy to resolve, in the air and oxidizer under the function of the dyes to return to. Light is brittle, not suitable for printing and dyeing curtain and often sun exposure supplies. Mainly used for the cotton fabric dyeing and printing, by urea as solvent can be used to help the sheets and a handkerchief for printing can be dissolved, Anthracene with soluble pigment printed green fruit green IB fight, to improve its resistance to bask in fastness, still can and other reduction dye spell dye shallow noise.