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Textile Dyestuffs 

C.I.Reactive Blue 19

Molecular Structure: anthraquinones

Reactive Blue KN-R

Reactive Blue KN-RS

Reactive Blue brilliant KN-R

Reactive Blue brilliant KN-RS

Molecular Formula:C₂₂H₁₆N₂Na₂O₁₁S₃

Molecular Weight: 626.55

CAS Registry Number:2580-78-1

Manufacturing Methods : 1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid and 2-(3-Aminophenylsulfonyl)ethyl hydrogen sulfate condensation, refined, and then salting-out.

Properties and Applications: bright blue. Blue powder, the strong sulfuric acid solution for red sauce, after diluted navy precipitation; In the nitric acid is yellow, diluted still yellow in color. Water solution is blue, with 1 Moore sodium hydroxide solution colored light unchanged, continue to join insurance powder and warm red brown have precipitation; Add a boric acid sodium into shallow purple. 20 ℃ in the more than 150 g/L solubility. After dyeing color shade of blue for colourful, meet iron and copper ions colored light basic unchanged (level 5). The dye the affine high, the reaction of the high, 1/1 of the depth of the standard for 2 levels of white. Used for cotton, viscose fiber disseminated, roll dye, knot dyeing piled up, Continuous pad staining

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