Molecular formula :
nature : also known as the red color of amylin C. Red and yellow, marked a strong color in golden light, needle-like crystals or Corynebacterium. 2.11g/cm3 density of ~ 1.65. The temperature of 380 ° C to 390. Specific Surface Area 7 ~ 110m / g. Oil Absorption 40 ~ 78g/100g. The concentrated sulfuric acid to cherry red, brown diluted precipitation red precipitation. Water-soluble, ethanol. Insoluble acetone, benzene. Heat and Light excellent performance. The system is good ink flows. 2-amino-5-chloro-4-methyl-p diazotization with 2-naphthol coupling, and add pine soap and barium chloride to change color precipitate barium salt. For red ink, rubber and educational supplies, the art coloring pigment.
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