How was salt discovered

The Discovery of Rock Salt in New York: Some History

Between 1878 and 1895, over 35 salt mining companies were formed in New York''s Wyoming and Livingston Counties alone. In 1878 salt was found at a depth of 1,279 feet in a well bored for oil

Hafnium | Definition, Atomic Mass, Properties,

Hafnium, chemical element, metal of Group 4 (IVb) of the periodic table. It is a ductile metal with a brilliant silvery luster. It is dispersed in Earth''s crust to the extent of three parts per million and is invariably found in

Manganese | Uses, Facts, & Compounds

Manganese, chemical element that is a silvery white, hard, brittle metal of Group 7 in the periodic table. It was recognized as an element in 1774 by the Swedish chemist Carl Wilhelm Scheele. Although rarely used in pure form,

Morphine | Pain relief, Addiction, Side effects

morphine, narcotic analgesic drug used in medicine in the form of its hydrochloride, sulfate, acetate, and tartrate salts. Morphine was isolated from opium by the German chemist F.W.A. Sertürner in about 1804. In its power to

The Mineral That Shaped Human History

For sixteen centuries, salt from the African Sahara incited wars, robbery, murder, and slavery. Salt was in such demand that caravans of up to 3,000 camels (each animal carrying 400 pounds of salt) traversed the barren

Sulfur | Definition, Element, Symbol, Uses,

Sulfur, nonmetallic chemical element, one of the most reactive of the elements. Pure sulfur is a tasteless, odorless, brittle solid that is pale yellow in color, a poor conductor of electricity, and insoluble in water. It reacts with all

Hydrogen cyanide | Description, Uses, Effects,

Hydrogen cyanide, a highly volatile, colorless, and extremely poisonous liquid. A solution of hydrogen cyanide in water is called hydrocyanic acid, or prussic acid. It was discovered in 1782 by a Swedish chemist, Carl

Salicylic acid | Anti-inflammatory, Acne

Salicylic acid was first prepared by the Italian chemist Raffaele Piria in 1838 from salicylaldehyde. In 1860 the German chemists Hermann Kolbe and Eduard Lautemann discovered a synthesis based on phenol and carbon

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