Reactive Turquoise Blue Kn-G

Chemical Properties

Blue powder. The solubility in water (20℃) is 100g/L. The aqueous solution is lake blue, add 1mol/L sodium hydroxide, the color remains unchanged, then add the insurance powder and warm to purple, then add sodium perborate to return to the original color, a little lighter. It is blue in concentrated sulfuric acid, and the color is unchanged after dilution; it is green in concentrated nitric acid, and the color is slightly lighter after dilution.

Uses

Reactive Blue 21 is a phthalocyanine dye that can be decolorized by fungal strains isolated from contaminated soil.

Preparation

Copper phthalocyanine use chlorosulfonic and chlorinated and sulfones chlorosulfonated, and registration, 2-(4-Aminophenylsulfonyl)ethyl hydrogen sulfate condensation.

Properties and Applications

colourful green light blue. Blue powder. The strong sulfuric acid in blue, diluted for blue still; In nitric acid for green, diluted into a green light. Water solution is blue lake, add 1 Moore sodium hydroxide solution is still lake blue; Continue to join insurance powder and warm, into purple; Add a boric acid sodium return to a lake blue, colour and lustre is a little shallow. Used for cotton, linen, silk, polyamide fiber of knot dyeing and roll dye, also can be used in viscose fabric printing.

Standard	Light Fastness	Oxygen bleaching		Persperation Fastness		Soaping
		Fading	Stain	Fading	Stain	Fading	Stain
ISO	6			5	4-5	4(75℃)	4