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nature : Purple called Sumu. A natural dyes media. Hematoxylin trees from the timber access. Colorless irregular crystals, containing three elements crystal water. Met-redden. 100 ~ 120 ° C crystallization of soluble in the water. Hard and cold water soluble ether. Soluble in hot water and ethanol. Soluble alkali, ammonia and borax solution. In aqueous solution, especially in the alkaline solution air easily oxidized red brown oxidation hematoxylin. For silk, fur and leather dyeing and printing of cotton fabrics with different Mordant available blue or black. With heavy chromium salt, ferric salts, iron salts, salt and salt together tin can be made of various colors of amylin. In analytical chemistry for colorimetric analysis, microscopic analysis and pH indicator used, ranging between 5.0 and 6.0 color range from yellow and purple change.
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