Natron
The natron is a Minéral composed of Carbonate of hydrated Sodium, of formula NaCO·10HO, as well as a evaporitic rock containing mainly sodium carbonate and bicarbonate of sodium . It is appeared as a white substance, évanescente, which one finds at the edge of certain lakes.
The crystalline Système of mineral is monoclinical. Its glare is vitreous, transparent with translucent, and its colorless color with white.
The Oasis of the the Sahara very lay out often only of one water saltworks; also natron is formed it in the basins receiving waste water.
Layers
The natron is of evaporitic origin and is formed especially during the evaporation of Lac S rich person in element sodium.
Layers of natron are in Libya, Egypt, with the Botswana, the Chad and the the United States.
Use
The natron was already known Égyptiens of the Antiquité which used it as product of cleaning of the body like for the Momification. It was also used for the Blanchiment of the linen, with the preparation of the Cuir and with the conservation of the Viande S. the Egyptians discovered that by adding certain ingredients to the natron mixture and sands (for example lime), one obtained variously coloured Verre S. In the same way, to produce colorless and transparent glass, it is necessary to employ a particularly white sand, pure natron and a quite white lime.
The natron is a Minerai of sodium and makes it possible to obtain the Soda carbonate and the Bicarbonate of soda or sodium hydrogénocarbonate.
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