With the Perchloride of iron it gives a blackish-green color, and sulphuric acid colors it red.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Or, Take of-Tincture of Perchloride of Iron, one drachm Simple Syrup, one ounce, Water, three ounces To make a Mixture.
"Advice to a Mother on the Management of her Children"
Pye Henry Chavasse
The mordant used in Perchloride of iron, which is a 'still mordant,' i.
"Photogravure"
Henry R. Blaney