Naphthol Green B Explained

Naphthol Green B is a coordination complex of iron that is used as a dye. The ligand is a sulfonated derivative of 1-nitroso-2-naphthol.

Structure

Naphthol Green B is the sodium salt of Naphthol Green Y (C.I. 10005). The organic ligands each bind to iron as bidentate ligands through the nitrogen and the anionic phenoxide groups. Three ligands are bound to the iron.[1]

Applications

Its absorption maximum is 714 nm in water.[2] It is water-soluble.

Naphthol Green B is used in histology to stain collagen.[3] Moreover, it is used for polychrome stains with animal tissue. For industry purposes Naphthol Green B is used for staining wool, nylon, paper, anoxidized aluminium and soap.

External links

Notes and References

  1. 10.1002/aoc.3178. Efficient Hydroxylation of Aromatic Compounds Catalyzed by an Iron(II) Complex with H2 O2. 2014. Wang. Xiao. Zhang. Tianyong. Li. Bin. Yang. Qiusheng. Jiang. Shuang. Applied Organometallic Chemistry. 28. 9. 666–672.
  2. Horobin, RW. und Kiernan, JA. (2002): Conn's Biological Stains: A Handbook of Dyes, Stains and Fluorochromes for Use in Biology and Medicine. BIOS Scientific Publ., 10th edition; ; page 101 and 102
  3. Histological and Histochemical Methods: Theory and Practice, 4th edition, J. A. Kiernan