Molecular formula :
nature : flashing red brown crystalline block or sandy. The temperature of 118 ° C ~ 11.85. Huang was dissolved in the water orange. Dissolved in alcohol - and fibrinolytic. Micro-soluble acetone. Insoluble benzene. Case of concentrated sulfuric acid yellow, orange diluted. Orange nitrate was encountered. Aniline diazotization and coupling between phenylenediamine, dissolution, crystallization, dry derived. For cotton, acrylic, leather, paper, feathers, grass (or wood, bamboo) products and silk dyeing.
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