Metatungstic Acid

Metatungstic acid, a polylactic acid, is the only compound that the structure has been identified in a variety of tungsten acids, as colorless crystals. It belongs to 12-tungstophosphoric acid with a simple formula H6 [H2 (W3O10) 4]·nH2O, n is 10 or 23; a density of 3.93 g / cm 3, decomposition at 50 ℃; large solubility for 88.57 g / 100 cm 3 of water (25 ℃). It ‘s transformed from metatungstic acid salt that was an important industrial product developed in late 1970s, mainly as catalyst. Metatungstate was prepared by ammonium paratungstate, may also be obtained from white microcrystalline powdery tungstic acid. Many other metatungstic acid salt, including various metal salts and more bicarbonate salts, etc., can be obtained from white microcrystalline powdery tungstic acid directly or indirectly. Paratungstate is another isopolytungstate that the simple formula (NH4) 10 [H2W12O42]·nH2O, made from sodium tungstate solution by ion exchange method, was not able to give the corresponding free acid. Burning ammonium paratungstate can obtain tungsten trioxide without sodium.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

• < Prev
• Next >