Page 26 - Encyclopedia of Chemical Compounds 3 Vols

Timeline of the Development of Chemical Compounds

1773 • French chemist Hilaire Marin Rouelle identifies urea
as a component of urine.

Late 1700s • Commercial production of sodium bicarbonate
as baking soda begins.

1776 • Carbon monoxide is first prepared synthetically by
French chemist Joseph Marie Franc¸ois de Lassone,
although he mistakenly identifies it as hydrogen.

1790 • The first patent ever issued in the United States is
awarded to Samuel Hopkins for a new and better way of
making pearl ash.
1794 • Ethylene is first prepared by a group of Dutch
chemists.
Early 1800s • Silver iodide is first used in photography by
French experimenter Louis Daguerre.
1817–1821 • French chemists Joseph Bienaime ´ Caventou and
Pierre Joseph Pelletier successfully extract caffeine, qui-
nine, strychnine, brucine, chinchonine, and chlorophyll
from a variety of plants.

1817 • Irish pharmacist Sir James Murray uses magnesium
hydroxide in water to treat stomach and other ailments.
The compound is eventually called milk of magnesia.

1811 1812
1776 1793 Three severe
The U.S. Declaration Cotton gin is earthquakes 1812.
of Independence is 1789 invented by occurnearNew War of 1812
signed. French Revolution Eli Whitney. Madrid, Missouri. begins.
. . . . .

1760 1770 1780 1790 1800 1810

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