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... mineralogy) Na 2B 4O 7·10H 2O A white, yellow, blue, green, or gray borate mineral that is an ore of boron and occurs as an efflorescence or in monoclinic crystals; when pure it is used as a cleaning agent, antiseptic, and flux. Also known as diborate; pyroborate; sodium (1:2) borate; sodium tetraborate; tincal.

sodium tetraborate, Na 2B 4O 7·IOH 2O, crystal hydrate of the sodium salt of tetraboric acid. It is found in nature in the form of the mineral borax (or tincal), which is white or, less frequently, gray and yellow in color; its density is 1, 690-1, 720 kg/m 3. Borax is soluble in water (1.6 g of the anhydrous salt in 100 g of H 2O at 10° C). Aqueous solutions of borax are alkaline and absorb CO 2 ...

Or tincalSodium tetraborate decahydrate (Na 2B 4O 7 ∙10H 2O), a soft, light, colourless crystalline mineral used as a component of glass and pottery glazes in the ceramics industry, as a solvent for metal-oxide slags in metallurgy, as a flux in welding and soldering, and as a fertilizer additive, a soap supplement, a disinfectant, a mouthwash, and a water softener. About 50% of the world's ...

Or sodium tetraborate decahydrate., chemical compound, Na 2B 4O 7·10H 2O; sp. Gr. 1.73; slightly soluble in cold water; very soluble in hot water; insoluble in acids. Borax is a colorless, monoclinic crystalline salt; it also occurs as a white powder. It readily effloresces, especially on heating. It loses all water of hydration when heated above 320°C and fuses when heated above 740°C; a ...

... inorganic chemistry) Na 2B 4O 7·10H 2O A water-soluble, odorless, white powder; melts between 75 and 200°C; used in glass, ceramics, starch and adhesives, detergents, agricultural chemicals, pharmaceuticals, and photography; the impure form is known as borax. Also known as sodium pyroborate; sodium tetraborate.