Limestone

Description
Rock which is sedimentary (i.e., connected with or formed from sand, stones and settling at the bottom of lakes etc.) and containing calcium carbonate. Appears either in powder or crystal form, with colour varying from cream to white to medium dark grey (when its freshly broken). Almost insoluble in water, alcohol but soluble in diluted form of acids. Moisture content: up to 4%. Used as a source of lime; neutralising agent, filler, and extender in rubber, plastics, paints; whitewash, production of carbon dioxide in laboratory, antacid etc. Bulk density: 1,190 - 1,493 kg/m3.
Trade Names (Synonyms)
Agricultural limestone - Agstone - Aragonite - Atomit - Bell mine pulverised limestone - calcite - carbonic acid, calcium salt - chalk - Dolomite - Franklin - limestone (FCC) -lithographic stone - marble - natural calcium carbonate -portland stone -sohnhofen stone -vaterite - oyster shells -marl - travertine.

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