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What is Orange G and What Is It Used For?


Also called wool orange, acid orange #10, and CI 16230, Orange G has a wide variety of uses.

  • In the determination of Mallory’s stain for collagen in connective tissue
  • As a stain for granules, elastic fibers, mast cells, and pollen tubes
  • In the biological stain community, it is the contrast/background stain for Hematoxylin, Safranin O, Crystal Violet, Methyl Green and Basic Fuchsin
  • It is widely used to dye textiles, such as wool and silk, paper, leather, and more