tungstate de calcium

См. также в других словарях:

• tungstate — [ tœ̃kstat ] n. m. • 1789; de tungstène ♦ Chim. Sel renfermant l anion WO4. Tungstate de sodium (Na2WO4). ⇒ wolfram. ● tungstate nom masculin Sel d un acide tungstique. ● tungstate (synonymes) nom masculin Sel d un acide tungstique. Synonymes …   Encyclopédie Universelle

• Calcium — (pronEng|ˈkælsiəm) is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the Earth s crust. Calcium is also …   Wikipedia

• Tungstate — The tungstate ion is WO42−.A tungstate (compound) is a compound containing the tungstate ion, or more complicated polymeric ions. Tungstates are salts of tungstic acid.See the for a list of tungstates.OccurrenceTungstates occur naturally with .… …   Wikipedia

• calcium tungstate — noun : a white crystalline salt CaWO4 found in nature as scheelite and used chiefly in screens for radiography, in luminous paint, and in fluorescent lamps * * * calcium tungstate, a white powder occurring naturally as scheelite and produced… …   Useful english dictionary

• calcium tungstate — kalcio volframatas statusas T sritis chemija formulė CaWO₄ atitikmenys: angl. calcium tungstate; calcium wolframate rus. кальций вольфримовокислый; кальция вольфрамат ryšiai: sinonimas – kalcio tetraoksovolframatas …   Chemijos terminų aiškinamasis žodynas

• calcium wolframate — kalcio volframatas statusas T sritis chemija formulė CaWO₄ atitikmenys: angl. calcium tungstate; calcium wolframate rus. кальций вольфримовокислый; кальция вольфрамат ryšiai: sinonimas – kalcio tetraoksovolframatas …   Chemijos terminų aiškinamasis žodynas

• tungstate — An anionic form of tungsten. calcium t. a phosphor with a high stopping power for x rays that was formerly used widely in fluoroscopic screens and intensifying screens for radiography …   Medical dictionary

• calcium tungstate — noun A compound with chemical formula CaWO …   Wiktionary

• Cadmium tungstate — (CdWO4 or CWO) is a dense, chemically inert solid which is used as a scintillation crystal to detect gamma rays. It has density of 7.9 g/cm3 and melting point of 1325 °C. It is toxic if inhaled or swallowed. Its crystals are transparent,… …   Wikipedia

• molybdate and tungstate minerals —       naturally occurring inorganic compounds that are salts of molybdic acid, H2MoO4, and tungstic acid, H2WO4. Minerals in these groups often are valuable ores.       The structural unit of these minerals is a tetrahedral group formed by four… …   Universalium

• TUNGSTÈNE — Le tungstène est un élément métallique très réfractaire, appartenant au groupe Va de la classification périodique, qui comprend aussi le chrome et le molybdène. Ce métal, de la famille des éléments de transition, est à la fois un «aristocrate» et …   Encyclopédie Universelle