Hematein, or, sometimes, Haematein, is derived from Haematoxylin, and is a biological stain component. Its natural source is from logwood, under such name both hematein and Haematoxylin are referred to. Hematein has indicator properties, and complexes with metal ions to form Nucleic Acid stains.
Hematein makes various complexes with metal ions. Aluminum(III) ions produce a dark blue color, Copper(II) ions produce a violet color, and Ferric ions produce a dark blue to black complex.
Hematein is a dark brown-red solid, usually sold as as a fluffy powder. It often contains traces of Haematoxylin. It does not dissolve easily in water unless the solution is acidic, but excessively acidic solutions decompose the compound.
Oxydizing Haematoxylin will yeild Hematein.
- Production of stain complexes for nucleic acids in animal cells.
Other than staining skin and clothing, this compound can be considered harmless.