Orange G, C.I. 16230, certified

Mallory's stain for collagen in connective tissue. Also useful as a stain for granules, elastic fibers, mast cells, and pollen tubes. A general histology and cytology counterstain.
Acid orange 10; Xylene fast orange G; 7-Hydroxy-8-phenylazo-1,3-naphthalenedisulfonic acid λmax 475nm.