Chromium (Vi) Oxide Suppliers USA
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Product | Description | |
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Chromium (VI) Oxide Quick inquiry Where to buy Suppliers range | CHROMIUM (VI) OXIDE, 99% pure, flake, (Synonym: Chromic Acid; Chromium Trioxide; Chromic Anhydride), Formula: CrO3. CAS No. 1333-82-0. Noah Chemicals San Antonio, Texas. ISO 9001:2015 Certified. Request a Quote Today! | Texas TX |
Chromium (VI) Oxide Quick inquiry Where to buy Suppliers range | Chromium (VI) oxide is a toxic compound that has been strongly linked to initiating cancer in humans. Chromium (VI) oxide is also used as a catalyst in the oxidation of benzylic compounds (e.g. Toluene [T535870]) with periodic acid as the terminal oxidant. Group: Biochemicals. Grades: Highly Purified. CAS No. 1333-82-0. Pack Sizes: 10g, 25 g. Molecular Formula: CrO3, Molecular Weight: 99.99. US Biological Life Sciences. | Worldwide |
Chromium (VI) Oxide Quick inquiry Where to buy Suppliers range | CHROMIUM (VI) OXIDE, 99.5% pure, ACS Reagent, crystal, (Chromic Acid, Chromium Trioxide, Chromic Anhydride), Formula: CrO3. CAS No. 1333-82-0. Noah Chemicals San Antonio, Texas. ISO 9001:2015 Certified. Request a Quote Today! | Texas TX |
Chromium (VI) Oxide, flake Quick inquiry Where to buy Suppliers range | Chromium (VI) Oxide, flake. Grades: ACS. CAS No. 1333-82-0. Pack Sizes: Gram Quantities: 125 gm, 6 x 125 gm, 500 gm, 6 x 500 gm. Order Number: 11913. | www.prochemonline.com |
Chromium(VI) oxide 99+% Quick inquiry Where to buy Suppliers range | Chromium(VI) oxide 99+%. Group: Biochemicals. Grades: Reagent Grade. CAS No. 1333-82-0. Pack Sizes: 100g, 250g, 1Kg. US Biological Life Sciences. | Worldwide |
Chromium Quick inquiry Where to buy Suppliers range | Chromium. Uses: Chromium is oxidized readily in air forming a thin, adherent, transparent coating of Cr2O3. Chromium forms both the chromous (Cr2+) and chromic (Cr3+) compounds that are highly colored. Chromium metal reacts readily with dilute acids forming a blue Cr2+ (aq) solution with the evolution of hydrogen: Cr + 2HCl ? CrCl2 + H2 Chromium in metallic form and as Cr2+ ion are reducing agents. The Cr2+ reduces oxygen within minutes, forming violet Cr3+ ion: 4Cr2+(aq) + O2(g) + 4H+ (aq) ? 4Cr3+ + 2H2O (l) The standard redox potential for the overall reaction is 1.64V. Cr3+ ion forms many stable complex ions. In the aqueous medium, it forms the violet Cr(H2O)63+ ion which is slightly basic. Chromium(III) ion is amphoteric, exhibiting both base and acid behavior. Chromium reaction in an aqueous solution with a base produces a pale blue-violet precipitate having composition: Cr(H2O)3(OH)3. Cr(H2O)63+ (aq) + 3OH- (aq) ? Cr(H2O)3(OH)3 (s) + H2O The above precipitate redissolves in excess base: Cr(H2O)3(OH)3 (s) + H+ (aq) ? Cr(H2O)4(OH)2+ (aq) + H2O Chromium forms chromium(VI) oxide in which the metal is in +6 oxidation state. In acid medium it yields yellow chromate ion, CrO42-, and the redorange dichromate ion, Cr2O72-. Chromium is oxidized in nitric, phosphoric or perchloric acid forming a thin oxide layer on its surface, thus making the metal even more unreactive to dilute acids. Elemental chromium reacts with anhydrous halogens, hydrogen fluoride, and hydrogen chloride forming the corresponding chromium halides. At elevated temperatures in the range 600 to 700°C, chromium reacts with hydrogen sulfide or sulfur vapor, forming chromium sulfides. Chromium metal reacts at 600 to 700°C with sulfur dioxide and caustic alkalis. It combines with phosphorus at 800°C. Reaction with ammonia at 850°C produces chromium nitride, CrN. Reaction with nitric oxide forms chromium nitride and chromium oxide. 5Cr + 3NO ? 3CrN + Cr2O3. Group: Nanoparticles & Nanopowders. Alternative Names: Chromium, lump, 10 mm max. lump size, weight 50 g, purity 99.95%; Chromium, foil, not light tested, 25x25mm, thickness 0.01mm, permanent polyester support, 99.99+%; Chromium, foil, 25x25mm, thickness 2.0mm, hard, 99.7+%; Chromium, rod, 25mm, diameter 2.0mm, 99.7+%; Chromium, foil, thickness 0. | |
Gadolinium Quick inquiry Where to buy Suppliers range | Gadolinium. Uses: The only oxidation state known for this metal is +3. Therefore, all its compounds are trivalent. It reacts with dilute mineral acids forming the corresponding salts. The reaction is vigorous but usually not violent. 2Gd + 3H2SO4 ? Gd2(SO4)3 + 3H2 2Gd + 6HCl ? 2GdCl3 + 3H2 Although the metal is stable in air at ordinary temperature, it burns in air when heated at 150 to 180°C, particularly when present in sponge or powdered form having a large surface area. The product is gadolinium(III) oxide, Gd2O3. Gadolinium is a strong reducing agent. It reduces oxides of several metals such as iron, chromium, lead, manganese, tin, and zirconium into their elements. The standard oxidation potential for the reaction Gd ? Gd3+ + 3e- is 2.2 volts. Gadolinium burns in halogen vapors above 200°C forming gadolinium(III) halides: 2Gd + 3Cl2 ? 2GdCl3 When heated with sulfur, the product is gadolinium sulfide Gd2S3. Similarly, at elevated temperatures, gadolinium combines with other nonmetals such as nitrogen, hydrogen, and carbon forming nitride, hydride, and carbide respectively: 2Gd + N2 ? 2GdN 2Gd + 3H2 ? 2GdH3. Group: Nanoparticles & Nanopowders. Alternative Names: AC1L2N4M; Gadolinium chips, 99.9%, 3N (REO); Gadolinium pieces, 20mm (0.79in) & down; 64Gd; Gadolinium ingot, 3N; Gadolinium, foil, thickness 0.01 mm, purity 99%, size 25 x 25 mm; Gadolinium Nanoparticles; Gadolinium, foil, thickness 0.025 mm, size 25 x 25 mm, purity 99%; Gadolinium, foil, thickness 0.5 mm, size 25 x 25 mm, purity 99%; Gadolinium, foil, thickness 1 mm, 99.9% trace rare earth metals basis. CAS No. 7440-54-2. Molecular formula: Gd. Mole weight: 157.25g/mol. IUPAC Name: gadolinium. Exact Mass: 157.924g/mol. EC Number: 231-162-2. Melting Point: 1313 deg C. Solubility: Soluble in dilute acid. Density: 7.90 g/cu cm. SMILES: [Gd]. InChI: InChI=1S/Gd. InChIKey: UIWYJDYFSGRHKR-UHFFFAOYSA-N. Monoisotopic Mass: 157.924g/mol. | |
Jones reagent Quick inquiry Where to buy Suppliers range | Jones reagent. Alternative Names: Chromium(6+) trioxide; Chrome (trioxyde de) [French]; I14-18129; Chromium trioxide, anhydrous; UN1463; Epitope ID:158535; Chromium trioxide solution in sulfuric acid; Monochromium trioxide; AC1L24SL; Chromium trioxide, anhydrous [UN1463] [Oxidizer]. CAS No. 65272-70-0. Molecular formula: CrO3;CrO3;CrO3. Mole weight: 99.993g/mol. IUPAC Name: trioxochromium. Exact Mass: 99.925g/mol. EC Number: 215-607-8. Melting Point: 385 ° F (NTP, 1992);197 deg C;197 °C;387°F (Decomposes). Solubility: Very soluble (NTP, 1992);In water, 169 g/100 g water at 25 deg C;In water, 1667 g/L (EU Method A.6 (Water Solubility));In water, 167.299 lb/100 lb water at 70 deg F;Soluble in ethyl alcohol, ethyl ether, sulfuric and nitric acids;Soluble in sulfuric acid and organic solvents;Chromium(VI) oxide dissolves in water to form chromic acids; the solubility depends only slightly on temperature. A saturated solution contains 166 g of CrO3 at 20 deg C and 199 g of CrO3 at 90 deg C per 100 mL of water.;Solubility in water, g/100ml: 61.7 (good);63%. Density: 2.7 (NTP, 1992);2.70;2.7 g/cm³;2.70 (CrO3). SMILES: O=[Cr](=O)=O. InChI: InChI=1S/Cr.3O. InChIKey: WGLPBDUCMAPZCE-UHFFFAOYSA-N. H-Bond Acceptor: 3. Monoisotopic Mass: 99.925g/mol. |