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China, Chinese Direct Dyes Red 81 for Paper Dyeing1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Pigment DyeDirect DyeDirect Red 4bDirect Dyes
Hangzhou Emperor Chemical Co., Ltd.
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Product Description Product Name: Direct Red 81C.I. No.: 28160CAS No.: 2610-11-9/12237-71-7Molecular Formula: C29H19N5Na2O8S2Molecular Weight: 675.6Relative Name:Direct Red 4B,Direct Fast Red 4B,Direct Fast Red 8B,Duasyn Direct Red 8B,Pergasol Red 2B. Shade: red powder Direct Red 81 Physical Properties and light fastness, solubility. Direct Red 81Dyeing depth %2Insolubles %0.15Light Fastness4Washing Fatness4Rubbing fastness(dry)4-5Rubbing fastness(wet)3 Direct Red 81 Properties and Applications:Soluble in water for product red, soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid dyes for dark blue, shalloworange brown after diluted precipitation; In nitric acid solution for colourful blue, to red light brown. The dye solution to join strong hydrochloric acid foryellow olive brown precipitation; Add thick sodium hydroxide solution has the purple precipitation. 60 oC in the solubility of 40 g/L, not sensitive to that fights. For colourful red light. Copper ions in dyeing color slightly turn blue, encounter iron ion colored light basic unchanged. For A class SDC classification. To dead cotton cover the gender is poorer. Cotton neutral and alkaline white are level 5, viscose and minus sex of neutral white for 4 ~ 5 levels. Used for dyeing cotton and viscose, also can be used for paper color.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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