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China, Chinese China Chemical Factory Direct Congo Red Dye for Paper1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Pigment DyeDirect DyeDyestuffTextile Dyes
Jiangxi Morni Chemical Co., Ltd.
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Product Description Product DescriptionColor Index: C.I. Direct Red 28CAS No.: 573-58-0 (the same as Congo Red; they are different names for the same substance)Chemical Category: Bisazo direct dye Chemical Properties: Molecular Formula: C32H22N6Na2O6S2Molecular Weight: 696.66 Physical Properties: Appearance: Brownish-red powderSolubility: Easily soluble in hot water; soluble in cold water at a ratio of 1:10, with the aqueous solution showing a yellowish-red color; soluble in ethanol to present an orange color; very slightly soluble in acetone, and almost insoluble in ether.Melting Point: >360oC Application Properties: Mainly used for dyeing cellulose fibers such as cotton and viscose fiber, and also for paper coloring.Can be used as an acid-base indicator (the main component of Congo Red test paper), with a color change range of pH 3.0 (bluish-purple) - 5.0 (red).Used in fields such as biological staining and reagents in analytical chemistry.Specification Company profile Exhibition Packing & Delivery FAQ
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