12 Hydroxy Stearic Acid In Chennai

MOQ10

HS Code2811

Molecular FormulaH3PW12O40

ShapeCrystal

Physical FormPowder

UsageCatalystIn common with the other heteropolyacids phosphotungstic acid is a catalyst and its high acidity and thermal stability make it a catalyst of choice according to some researchers.[13] It is in solution as a homogeneous catalyst, and as a heterogeneous catalyst "supported" on a substrate e.g. alumina, silica. Some acid catalysed reactions include:the homogeneous catalysis of the hydrolysis of propene to give 2-propanolthe homogeneous catalysis of the Prins reactionthe heterogeneous catalysis of the dehydration of 2-propanol to propene and methanol to hydrocarbons.Dyeing and pigmentsPhosphotungstic acid has been used to precipitate different types of dyes as "lakes".[14] Examples are basic dyes and triphenylmethane dyes, e.g. pararosaniline derivatives.HistologyPhosphotungstic acid is used in histology for staining specimens, as a component of phosphotungstic acid haematoxylin, PTAH, and aEURoetrichromeaEUR reagents, and as a negative stain for imaging by a transmission electron microscope.Phosphotungstic acid haematoxylin (PTAH)Mallory described the reagent now generally known as PTAH in 1897.[16] PTAH stains tissues either reddish brown or blue depending on their type. This property of simultaneously staining two different colours is different from other haematoxylin reagents e.g. alum-haematoxylin. The role of phosphotungstic acid and the mechanism of staining is not fully understood. Interestingly the active component of haematoxylin is the oxidised form, haematin, although this rarely acknowledged in the literature which refer to haematoxylin staining. Phosphotungstic acid forms a lake with haematin.[17] The make aEUR"up of the reagent is uncertain, examination of a year old sample showed there to be three coloured components, blue, red and yellow.[18] These were not identified. Some investigations of aEURoemodelaEUR systems, reacting various compounds such as amino acids, purines, pyrimidines and amines with PTAH show that they give rise to different colours.Trichrome reagentsIn these reagents two or three basic dyes are used with phosphotungstic acid, in either a one step or multi-stage procedure. These reagents colour different tissue types different colours. Again the mechanism of staining is not fully understood. Some explanations include the proposal that phosphotungstic acid acts as a mordant to bind the dye to the tissue[20] or that alternatively it binds to tissue blocking it to dye molecules.Negative stainingAdsorption onto tissue or the surface of viruses and its electron density are the bases of phosphotungstic acids action as a negative stain. This electron density arises from the presence of the 12 tungsten atoms which each have an atomic number of 74. The mechanism of the adsorption onto tissue has been proposed as being electrostatic rather than involving hydrogen bonding, as adsorption is not affected by pH.AnalysisThe potassium salt is only slightly soluble, unlike most other phosphotungstate salts, and has been proposed as a method for the gravimetric analysis of potassium.Precipitation of proteinsIn a number of analytical procedures one of the roles of phosphotungstic acid is to precipitate out proteins. It has been termed a "universal" precipitant for polar proteins.[23] Further studies showed that no precipitation occurred with I+--amino groups but did occur with guanidino, Iu-amino and imidazole groups.MedicinalVery little work appears to have been carried out in this area. One example relates to liver necrosis in rats.Composite proton exchange membranesThe heteropoly acids, including phosphotungstic acid, are being investigated as materials in composite proton exchange membranes, such as Nafion. The interest lies in the potential of these composite materials in the manufacture of fuel cells as they have improved operating characteristics

GradeExtra Pure

MOQ200 Kilograms/Kilograms

UsageIndustrial

MOQ10000 Kilograms/Kilograms

Purity99%

ApplicationIndustrial

Purity98%

Molecular weight300.47 g/mol

Melting point78-80 °C

SolubilityInsoluble in water

AppearanceWhite crystalline powder

Packaging25kg drums

GradeIndustrial Grade

ApplicationLubricants

Purity90% min

UsageIndustrial

StorageCool

AppearanceWhite to off-white powder

MOQ2000 Kilograms/Kilograms

ApplicationFertilizer, Paints, Other

Poisonous1

Chemical NameAspartame

ColorWhite

UsageConstruction Chemical Additive

StorageFreezer

MOQ100 Kilograms/Kilograms

GradeCosmetic Grade

Physical FormSolid

UsageCosmetic Cream

StorageRoom Temperature

Purity80-99%

MOQ25 Kilograms/Kilograms

Product TypeFatty Acid (Hydroxy) - 12-Hydroxy Stearic Acid

FeatureHigh Purity, Good Lubricity, Excellent Thickening Properties

Density0.94 Gram per cubic centimeter(g/cm3)

Natural RubberNo

Components12-Hydroxyoctadecanoic Acid (C18H36O3)

Water AbsorptionInsoluble in Water

MOQ500 Kilograms/Kilograms

GradeOther

UsagePharmaceutical Raw Materials

ApplicationIndustrial

AppearanceFlakes

Purity98%

Melting point70-75°C

Packaging25kg bags

SolubilityInsoluble in water

StorageCool and dry

MOQ1000 Liter/Liters

FormPowder

StorageDry Place

SmellOther

Purity98%

CAS No106-14-9

UsageIndustrial

Purity99%

AppearanceWhite powder

SolubilityWater soluble

PackagingPlastic bottle

StorageRoom temperature

Shelf life2 years

ApplicationGreases

PurityHigh

UsageIndustrial

StorageDry Place

AppearanceWhite Powder

FeaturesHigh Viscosity, Low Price, Multi-Purpose, Glycerin Free, Premium Greases

FeaturesBiodegradable, Non-toxic, Water-resistant, Stable, Versatile

AppearanceFlaky solid

ColorOff-white

Melting Point70-75 °C

Acid Value7-12 mg KOH/g

Hydroxyl Value140-160 mg KOH/g

UsageLubricants, cosmetics, coatings