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Molecular formula : MW : CAS :
nature : red 2BN alias Everlasting, 2B Red Light, Red Light BBN - P. Look for the red light yellow powder, do not dissolve in water and ethanol; Case of concentrated sulfuric acid for purple, blue was diluted red precipitation; For the case of concentrated nitric acid, brown-red. Coloring resilient Light and good heat resistance, alkali resistance poor. For ink, plastics, rubber, paint and educational coloring supplies. From 2-amino-4-chloro-5-methyl-p diazotization, with 2-naphthol-3-acid coupling, barium chloride salt derived.
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