Reactive Tq Blue G
Textile Dyestuffs
C.I.Reactive Blue 21
Molecular Structure: Phthalocyanine class
Molecular Formula:
Molecular Weight:
CAS Registry Number:12236-86-1/73049-92-0
Manufacturing Methods : 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 | ||