Phosphotungstic acid (PTA), , is a heteropoly acid with the chemical formula H3PW12O40. It is normally present as a hydrate. It has the appearance of small, colorless-grayish or slightly yellow-green crystals, with melting point 89 °C (24 H2O hydrate). It is odorless and soluble in water (200 g/100 ml). It is not especially toxic, but is a mild acidic irritant. The compound is known by a variety of different names and acronyms (see 'other names' section of infobox).
Phosphotungstic acid is used in histology as a component for staining of cell specimens, often together with haematoxylin as PTAH. It binds to fibrin, collagen, and fibres of connective tissues, and replaces the anions of dyes from these materials, selectively decoloring them.
Supplier: Ammonium persulfate, potassium persulfate, sodium persulfate, ammonium metatungstate, sodium tungstate, ammonium paratungstate, phosphotungstic acid, tungstic acid, tungsten disulphide, sodium molybdate, ammonium molybdate, molybdenum disulphide, molybdic acid, sodium selenite, selenium dioxide, tungsten salts, molybdenum salts, selenium salts
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Product : sodium molybdate Specifications: Formula : na2moo4.2h2o Mol. Wt. : 241.95 Description : white crystalline powder Total assay : 98.0% min. Molybdenum : 39.0% min. Insoluble matter : 0.05% max. Chloride (cl) : 0.05% max. Sulphate (so4) : 0.01% max. Heavy metal : 0.01% max. Silicon : 0.05% max. 25-50 kgs. Hdpe carboy with inner liner
Product : ammonium molybdate Specifications : Formula : (nh4)6 mo7 o24.4h2o Mol. Wt.: 1235.90 Description : white crystalline powder Total assay : 99.0% min. Moo3 : 81.0% min. Molybdenum : 54% min. Insoluble matter : 0.01% max. Chloride (cl) : 0.05% max. Nitrate (no3) : 0.02% max. Sulphate (so4) : 0.02% max. Iron (fe) : 0.01% max. Lead (pb) : 0.01% max. 25-50 kgs. Hdpe carboy with inner liner
Sodium tungstate :: Assay : 98.0% - 99.0% min Mol. Wt. - 329.86 Free alkali (as naoh) - 0.1% max Chloride (cl) - 0.01% max Sulphate (so4) - 0.02% max Total nitrogen (n) - 0.005% max Iron (fe) - 0.002% max 25-50 kgs. Hdpe carboy with inner liner
1,10 Phenanthroline Monohydrate, 18-Crown-6-Ether, 1-Amino-2 Naphthol-4-Sulphonic Acid, 1-Naphthol, 2,4 Dinitrophenyl Hydrazine, 2,6 Diacetylpyridine 2-Amino 5-Chloro pyridine, 2-Amino-3,5-Dibromobenzaldehyde, 3,4-Dihydroxybenzaldehyde, 3,5 Dinitrosalicylic Acid, 3-Chlorobenzoic Acid 4-Bromo Aniline, 4-Dimethylamino Benzaldehyde, 4-Hydroxy Coumarin 5 Sulphosalicylic Acid, Aesculin, Alpha - Benzoin Oxime (Cupron) Anthrone, Benzanilide, Biuret, Chromotropic Acid (disodium salt), Crystal Violet (Gentian Violet), Diacetyl Monoxime, Dimethylglyoxime, Diphenyl Amine, Diphenyl Carbazide, Diphenyl Carbazone, Dpx Mountant, Edta Disodium Salt, Edta Potassium Salt, Ethidium Bromide, Gold Chloride, Hippuric Acid, Homophthalic Acid, Hydroiodic Acid, Hydroxylamine_Hydrochloride, Indole 3 Acetic Acid Indole 3 Butyric Acid, Indole- 3- Propionic Acid, Iodine Pentoxide, Maltose Meta Phosphoric Acid Sticks, Methyl Salicylate, M-Phosphoric Acid (sticks) N-1 Naphthyl Ethylene Diamine Dihydrochoride, N-Benzyl-4-Piperidone N-Bromo Succinimide, Ninhydrin, N-Phenylanthranilic Acid, Ortho Tolidine Dihydrochloride, Para Dimethylamino Benzaldehyde, P-Bromo Acetanilide Phenyl Hydrazine, Phenyl Hydrazine Hydrochloride, Phenyl Hydrazine Sulphate Phenyl Mercuric Nitrate, Phloroglucinol, Phosphomolybdic Acid Powder,Phosphotungstic Acid, Pyrogallol, Quinhydrone, Salicin, Semicarbazide Hydrochloride, Silico Tungstic acid, Silicon Dioxide, Soda Lime, Tuccinimide Tulphanilic Acid, Thioacetamide, Thiomalic Acid, Thiosemicarbazide Trichloroacetic Acid, Trimethyl Sulfoxonium Iodide, Triphenyl Phosphite, Urease & Other
Acridine Orange, Acridine Yellow, Alcian Blue 8GX, Alizarin, Allaxon, 1 Amino 2 Naphtol 4 Sulphonic Acid, Ammonium Molybdate, Anthron, Azur A & B, Basic Fuchsin, Benzamide, Biological Buffers, Brilliant Green, Bromo Cresol Green / Methyl Orange, / Methyl Red / Phloxine B, Brucine / Brucine Sulphate, Carmine, Cerric Ammonium Sulphate & Nitrate, Crystal Violet (Gentian Violet), 2,6 Dichlorophenolindophenol Sodium Salt, Diacetyl Monoxime, Dimethyl Glyoxime, Eosin Yellow, Eriochrome Black T, Ethidium Bromide AR, Evans Blue, Fluorescein Sodium, Fuchsin Acid, Fuchsin Basic, Gold Chloride (24% And 49%), Hematoxylin Stain Certified (Ready Stock), 1 Hexane Sulphonic Acid Sodium Salt, Immersion Oil, Iodine Monobromide, Indigo Carmine, Indole 3 Acetic Acid, Indole 3 Butyric Acid, Janus Green B, Leishman Stain / Giemsa Stain / Wright Stain, Litmus, Mercuric Acetate, Mercuric Chloride, Mercuric Iodide Red, Mercuric Sulphate LR/AR, Metaphosphoric Acid Sticks, Methyl Green, Methyl Orange, Methyl Red & Sodium Salt, Methylene Blue Zinc Free, Murexide, Naphthol Green B, Naphthol Yellow S, Ninhydrin, Orange G, Palladium Chloride, Para Rosaline HCl, P Dimethylaminobenzaldehyde, Phenol Red & Sodium Salt, Phenolphthalein, Phenyl Mercuric Acetate, Phenyl Mercuric Nitrate, Phosphotungstic Acid, Platinum Chloride, P-Nitroacetophenone, Potassium Chloroplatinate, Potassium Phthalimide, Potassium Tellurite, P Toluene Sulphonyl Chloride, Pyridine p-Toluene Sulphonate, Pyronin B, Pyronin G (Y), Resazurin Sodium Salt, Rhodamine B, Rose Bengal, Safranine O, Salicyldehyde Azine, Silver Diethyl Dithiocarbamate, Silver Nitrate, Silver Oxide, Silver Sulphate, Sodium Arsenite, Sodium Thioglycolate, Stains & Indicators, Sudan I/II/III/IV, Thioflavin T, Thiomersal, Thymidine, Thymolphthalein, Titan Yellow, 2,3,5 Triphenyltetrazolium Chloride, Trypan Blue, Tryptone Medium, Xylene Cyanol FF, Xylenol Orange, Zincon ARâ?¦..and many more
