Sulphate of Zinc
White vitriol or white copperas.
Symptoms.—The sulphate of zinc acts as a pure irritant. Violent vomiting, accompanied with pain in the abdomen, and purging, are the symptoms which first make their appearance. These may be followed by symptoms which betoken collapse, viz. coldness of the limbs, paleness of the face, irregular pulse, and fainting.
Post-mortem Appearances.—Presence of inflammatory action.
Fatal Dose.—Uncertain.
Fatal Period.—Death has occurred in four hours.
Chemical Analysis.—Distinguished from oxalic acid by remaining fixed when heated on platinum foil.
In Solution:
1. Ammonia gives a white precipitate soluble in excess.
2. Ferrocyanide of Potassium, a white precipitate.