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China, Chinese Direct Dyes Red 31 for Paper Dyeing1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Pigment DyeDirect DyeDirect Red 12bDirect Dyes
Hangzhou Emperor Chemical Co., Ltd.
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Product Description Product Name: Direct Red 31C.I. No.: 29100CAS No.: 5001-72-9Molecular Formula: C32H21N5Na2O8S2Molecular Weight: 713.65 Relative Name:Direct Red 12B,Direct Fast Pink,Direct Pink 12B,Direct Pink 5B. Shade: colourful red blue light. Red brown powder Direct Red 31 Physical Properties and light fastness, solubility. Direct Red 31Dyeing depth %2Insolubles %0.15Light Fastness2Washing Fatness3Rubbing fastness(dry)4-5Rubbing fastness(wet)2 Direct Red 31 Properties and Applications:Soluble in water for product red solution, the solubility of 45 g/L (80 oC), also can dissolve in fiber element solution, slightly soluble in alcohol for red orange, insoluble in other organic solvents. The strong sulfuric acid in orange to red light for brown, diluted dark blue light red precipitate generated; In nitric acid solution for orange brown, precipitation. The dye solution to generate strong hydrochloric acid purplish red precipitate; Add thick sodium hydroxide solution for orange brown. Copper ions in dyeing dim light; Iron ion in micro have change. Mainly used in viscose, such as cotton, silk, polyamide fiber cellulose fiber and viscose/silk blended fabric dyeing, can be used for pulp shading.Package, 25KG/DRUM, CARTON BOX, BAG Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.EXHIBITIONS PHOTOS:FACTORY PHOTOS:
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