Borax
Borax (also referred to as sodium borate, tincal and tincar ) is a salt (ionic compound) normally encountered as a hydrated borate of sodium, with the chemical formula Na2H20B4O17. Borax mineral is a crystalline borate mineral that occurs in only a few places worldwide in quantities that enable it to be mined economically.
Borax can be dehydrated by heating into other forms with less water of hydration. The anhydrous form of borax can also be obtained from the decahydrate or other hydrates by heating and then grinding the resulting glasslike solid into a powder. It is a white crystalline solid that dissolves in water to make a basic solution due to the tetraborate anion.
Borax is commonly available in powder or granular form and has many industrial and household uses, including as a pesticide, as a metal soldering flux, as a component of glass, enamel, and pottery glazes, for tanning of skins and hides, for artificial aging of wood, as a preservative against wood fungus, as a food additive, and as a pharmaceutic alkalizer. In chemical laboratories it is used as a buffering agent.
The terms tincal and tincar refer to the naturally occurring borax historically mined from dry lake beds in various parts of Asia.
Asee Ho
- 2002-06-10T00:00:00.000000Z
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