borax

borax1
/bawr"aks, -euhks, bohr"-/, n., pl. boraxes, boraces /bawr"euh seez', bohr"-/.
a white, water-soluble powder or crystals, hydrated sodium borate, Na2B4O7·10H2O, occurring naturally or obtained from naturally occurring borates; tincal: used as a flux, cleansing agent, in the manufacture of glass, porcelain, and enamel, and in tanning. Also called sodium borate, sodium pyroborate, sodium tetraborate.
[1350-1400; < ML dial. Ar buraq < MPers burag; r. ME boras < MF < ML borax]
borax2
/bawr"aks, -euhks, bohr"-/, n.
cheap, showy, poorly made merchandise, esp. cheaply built furniture of an undistinguished or heterogeneous style.
[1940-45, Amer.; of uncert. orig.]

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Sodium tetraborate decahydrate (Na2B4O5(OH)4 · H2O), 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 supply comes from southern California deserts, including Death Valley.

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also called  Tincal,  

      sodium tetraborate decahydrate (Na2B4O7·10H2O). A soft and light, colourless crystalline substance, borax is used in many ways—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.

      Borax has been known since early times, when it was obtained from saline lakes in Kashmir and Tibet and taken to Europe to be refined. It has been produced commercially from colemanite, kernite, and tincalconite, as well as from the mineral borax, by dissolving the ore in water, filtering out the clay, and evaporating the solution. Colemanite was the chief source until the 1930s, when it was supplanted by kernite, which was subsequently replaced by the mineral borax. About 50 percent of the world's supply of commercial boron compounds comes from southern California: (California) the borax crusts and brine from Searles Lake, the large kernite and borax deposits near Kramer, and the colemanite deposits from Death Valley, formed by the evaporation of hot springs or saline lakes and playas. For detailed physical properties, see borate mineral (table).

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Universalium. 2010.

Synonyms:

Look at other dictionaries:

  • borax — borax …   Dictionnaire des rimes

  • Borax — Kristalle aus Kalifornien Chemische Formel Na2[B4O5(OH)4] · 8 H2O …   Deutsch Wikipedia

  • Borax — Cristaux de borax Général Nom IUPAC …   Wikipédia en Français

  • Borax — (Natriumborat, Natriumtetraborat, borsaures Natrium) Na2B4O7, kristallisiert in der Regel mit 10 H2O als prismatischer Borax, kann aber auch mit 5 Molekülen Wasser als oktaedrischer Borax erhalten werden. Im kristallisierten Zustande bildet er… …   Lexikon der gesamten Technik

  • borax — [ bɔraks ] n. m. • 1611; borrache 1256; lat. médiév. borax; ar. buraq « salpêtre », du persan burah ♦ Sel cristallin blanc (Na2B4O7), à saveur alcaline, utilisé pour la soudure des métaux et dans la fabrication du verre, des émaux, des savons et… …   Encyclopédie Universelle

  • BORAX-I — Saltar a navegación, búsqueda Los Experimentos BORAX, experimentos del reactor de agua en ebullición, fueron una serie de pruebas en la utilización del reactor nuclear BORAX I que demostraron la teoría de 1952 de Samuel Untermyer de que un… …   Wikipedia Español

  • borax — BÓRAX, s.n. Borat de sodiu. – Din fr. borax. Trimis de valeriu, 13.09.2007. Sursa: DEX 98  BÓRAX s. (chim.) tetraborat de sodiu. Trimis de siveco, 05.08.2004. Sursa: Sinonime  bórax s. n. Trimis de siveco, 10.08.2004. Sursa: Dicţionar… …   Dicționar Român

  • Borax — Sm borsaures Natrium per. Wortschatz fach. (16. Jh.), fnhd. borros, buras Entlehnung. Entlehnt als borros u.ä. aus ml. borax f./n. Dieses geht über arab. būraq, bauraq auf pers. būräh zurück. Später wird erneut auf die mittellateinische Form… …   Etymologisches Wörterbuch der deutschen sprache

  • Borax — Bo rax, n. [OE. boras, fr. F. borax, earlier spelt borras; cf. LL. borax, Sp. borraj; all fr. Ar. b?rag, fr. Pers. b?rah.] A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing …   The Collaborative International Dictionary of English

  • borax — [bôr′aks΄] n. [ME < ML borax < Ar bauraq < Pers būrah] 1. sodium borate, a white, anhydrous, crystalline salt, Na2B4O7, with an alkaline taste, used as a flux in soldering metals and in the manufacture of glass, enamel, artificial gems,… …   English World dictionary

  • Borax — (Natriumborat, Natriumtetraborat, borsaures Natron) Na2B4O7+10H2O findet sich an der Grenze der Natronsalpeterfelder in Peru und Bolivia, gelöst in Seen Chinas, Tibets (Teschu Lumbu), der südlichen Tatarei, Nepals, Persiens, Ceylons, in… …   Meyers Großes Konversations-Lexikon

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