Tungstic Acid

Payment TermsOthers, Cash Against Delivery (CAD), Cheque

Sample AvailableYes

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MOQ10 , Kilograms/Kilograms

StorageRoom Temperature

Purity99%

Melting Point100 AdegC

Boiling point1,473 AdegC

Ph LevelHigh

SolubilityWater

MOQ50 Kilograms/Kilograms

Product DescriptionSilico Tungstic Acid

MOQ100 Kilograms/Kilograms

GradeMultigrade

TypeIndustrial Lab Chemicals

AppearanceLiquid / Powder

Purity(%)100%

MOQ25 Kilograms/Kilograms

AppearanceWhite Powder

Physical FormPowder

SolubilityInsoluble Matters in water: Less than 0.20% / Screening Test

Molecular FormulaC10H7NaO4S

Molecular Weight224 Grams (g)

GradeIndustrial

MOQ25 Kilograms/Kilograms

Structural FormulaH3PW12O40

Solubilitywater soluble

CAS No1343-93-7

StorageRoom Temperature

GradeExtra Pure

PropertiesPhosphotungstic acid can be prepared by the reaction of sodium tungstate, Na2WO4.2H2O, with phosphoric acid, H3PO4, acidified with hydrochloric acid, HCl.[2]Phosphotungstic acid solutions decompose as the pH is increased. A step-wise decomposition has been determined and the approximate compositions at various pH values are as follows:[8]pH principal components1.0 [PW12O40]3a^'2.2 [PW12O40]3a^', [P2W21O71]6a^', [PW11O39]7a^'3.5 [PW12O40]3a^', [P2W21O71]6a^', [PW11O39]7a^', [P2W18O62]6a^', [P2W19O67]10a^'5.4 [P2W21O71]6a^', [PW11O39]7a^', [P2W18O62]6a^'7.3 [PW9O34]9a^'8.3 PO43a^', WO42a^'The species [PW11O39]7a^' is a lacunary, or defective Keggin ion. The [P2W18O62]6a^' has a Dawson structure. At pH less than 8, the presence of ethanol or acetone stabilises the anion, [PW12O40]3a^', reducing decomposition.[8]Tungstophosphoric acid is thermally stable up to 400 AdegC, and is more stable than the analogous silicotungstic acid, H4SiW12O40.[9]Large quantities of polar molecules such as pyridine are absorbed into the bulk phase and not simply on the surface. Solid state NMR studies of ethanol absorbed in the bulk phase show that both protonated dimers, ((C2H5OH)2H+) and monomers, (C2H5OH2+) are present.Phosphotungstic acid is less sensitive to reduction than phosphomolybdic acid. Reduction with uric acid or iron(II) sulfate produces a brown coloured compound. the related silicotungstic acid when reduced forms a similar brown compound where one of the four W3 units in the Keggin structure becomes a metal-metal bonded cluster of three edge shared W(IV) octahedra.[10]Phosphotungstic acid is the strongest of heteropolyacids. Its conjugate base is the PW12O403a^' anion.[11] Its acidity in acetic acid has been investigated and shows that the three protons dissociate independently rather than sequentially, and the acid sites are of the same strength.[12] One estimate of the acidity is that the solid has an acidity stronger than H0 =a^'13.16,[9] which would qualify the compound as a superacid. This acidic strength means that even at low pH the acid is fully dissociated.

Product DescriptionWe are offering our client an excellent quality range of Tungstic Acid.\015\012Uses : Production of tungsten metal and its derivatives, Fire proofing fabrics and cellulose, Reagent for uric acid, Alkaloids, Plasma proteins, Blood sugar, Clinical analysis of blood, Textile (mordant, color resist) pla

AppearanceYellow

MOQ100 Kilograms/Kilograms

PurityHigh

StorageDry Place

FormPowder

SolubilityYes

GradeIndustrial Grade

TypeChemical

MOQ10 Kilograms/Kilograms

Boiling point1,473 Degree C

Purity90 %

AppearancePowder

UsageIndustrial

Density5.59 g/cm3 Gram per cubic centimeter(g/cm3)

MOQ1000 Kilograms/Kilograms

Physical FormPowder

GradeIndustrial Grade

ApplicationChemical industry

Purity99.9%

UsageCatalyst

StorageStore in a cool and dry place

AppearanceWhite powder