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arsenic
(Encyclopedia)arsenic ärˈsənĭk [key], a semimetallic chemical element; symbol As; at. no. 33; at. wt. 74.92160; m.p. 817℃ (at 28 atmospheres pressure); sublimation point 613℃; sp. gr. (stable form) 5.73; va...Marsh test
(Encyclopedia)Marsh test, method for the detection of arsenic, so sensitive that it can be used to detect minute amounts of arsenic in foods (the residue of fruit spray) or in stomach contents. The sample is placed...As
(Encyclopedia)As, symbol for the element arsenic. ...Marsh, James
(Encyclopedia)Marsh, James, 1789–1846, English chemist. He is known for his chemical test for arsenic and antimony, called the Marsh test. Using it, very small quantities of arsenic can be detected. ...Periodic Table of the Elements: Arsenic
(Encyclopedia)Periodic Table of the Elements: Arsenic ...Paris green
(Encyclopedia)Paris green, also called Schweinfurt green, an extremely poisonous, bright green powder that was formerly used extensively as a pigment (e.g., in wallpaper) and that is sometimes used as an insecticid...smaltite
(Encyclopedia)smaltite smôlˈtīt [key], opaque tin-white to steel-gray mineral of the pyrite group, a compound of cobalt and arsenic. It occurs in massive form, occasionally in crystals (cubes) of the isometric s...cobaltite
(Encyclopedia)cobaltite kōˈbôltīt, kōbôlˈtīt [key], opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS. It occurs in crystals of...Bunsen, Robert Wilhelm
(Encyclopedia)Bunsen, Robert Wilhelm bŭnˈsən, Ger. rōˈbĕrt vĭlˈhĕlm bo͝onˈzən [key], 1811–99, German scientist, educated at the Univ. of Göttingen, where he received his doctorate in 1830. He served ...Mitscherlich, Eilhard
(Encyclopedia)Mitscherlich, Eilhard īlˈhärt mĭchˈərlĭkh [key], 1794–1863, German chemist. He was professor at Berlin from 1822. Noted for his discovery of the principle of isomorphism, he did important wor...Browse by Subject
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