A chemical derivative of hemoglobin formed by removal of the protein part of the molecule, oxidation of the iron atom, and combination with an acid to form a salt (compare hematin). Chlorohemin forms characteristic crystals, the identification of which provides the basis of a chemical test for blood stains.
A brownish-red crystalline salt of heme formed when hemoglobin is heated with glacial acetic acid and sodium chloride. The iron is present in the ferric (Fe3+) state. Hemin is used in testing for presence of blood.