One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356 degrees Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight 75. Symbol As.
Arsenious oxide or arsenious anhydride; -- called also arsenious acid, white arsenic, and ratsbane.
Pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.
We have increased conservation spending, enacted legislation that enables us to clean up and redevelop abandoned brownfields sites across the country, and implemented new clean water standards that will protect us from arsenic. Sue Kelly
That was after Napoleon died because there is still a controversy as to whether Napoleon was poisoned with arsenic. And the French say the British did it and the British say the French did it, but he died before the test for arsenic was available. Michael Baden