China wholesale Basic Violet 2b - Factory Supply Good Quality and Price Acid Blue 142 –

Physical and chemical properties:It is yellowish brown colloidal in concentrated sulfuric acid, and becomes lake green after dilution, accompanied by precipitation; It is old yellow colloidal in concentrated nitric acid. The aqueous solution is lake blue and slightly precipitated with salt acid; Add sodium hydroxide solution, change slightly and precipitate.

Application:It is used for dyeing and printing wool, silk and their fabrics, and also for dyeing leather.The levelness is medium and the discharge is good. When dyeing, the color light becomes green and dark when encountering copper and iron ions, and the color light basically remains unchanged when encountering chromium ions.
Quality guarantee period: 36 months.
Packing: 25kgs paper carton.
Storage:Store in a cool and ventilated room and prevent moisture and heat.