Tungstic Acid In Mumbai

MOQ200 Kilograms/Kilograms

Molecular FormulaH4[SiW12O40]

StorageRoom Temperature

Melting Point25AdegC

Purity99%

Molecular Weight2878.2 GSM (gm/2)

FormPowder

SolubilityInsoluble in water; soluble in alkali solutions

AppearanceYellow powder

Purity99%

EINECS No231-961-3

UsageIndustrial and laboratory-grade chemical application for AR (Analytical Reagent) purposes.

Shapeother Crystalline powder

MOQ10 Kilograms/Kilograms

SolubilityWater

Boiling point1473 AdegC

StorageRoom Temperature

Ph LevelHigh

Melting Point100 AdegC

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

MOQ50 Kilograms/Kilograms

Structural FormulaH4[SiW12O40]

Molecular FormulaH4[SiW12O40]

SmellOther Odorless

Refractive RateData not available

Boiling pointData not available

HS Code28399000

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.

MOQ25 Kilograms/Kilograms

StorageRoom Temperature

Purity99%

GradeReagent

Molecular Weight2880.2 Milligram (mg)

Molecular FormulaH3PW12O40

Melting Point89 i?1/2C

Product DescriptionTUNGSTIC ACID

MOQ1000 Kilograms/Kilograms

Physical FormPowder

Product DescriptionUses :- 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) plastics To form metal by reduction Alloys Preparation of tungstate for X-ray

MOQ1 Kilograms/Kilograms

CAS No7783-03-1

TypeSchool Lab Chemicals

Purity(%)99%