Chromium(iii) oxide is the inorganic compound of the formula cr2o3.
It is one of the principal oxides of chromium and is used as a pigment.
In nature, it occurs as the rare mineral eskolaite.
Properties
Chemical formulacr2o3
Molar mass151.9904 g/mol
Appearancelight to dark green, fine crystals
Density5.22 g/cm3
Melting point2435 c
Boiling point4000 c
Solubility in waterinsoluble
Solubility inalcoholinsoluble in alcohol, acetone, acids
[applications]
Because of its considerable stability, chromia is a commonly used pigment and was originally called viridian.It is used in paints, inks, and glasses. It is the colourant in "chrome green" and "institutional green."
Chromium(iii) oxide is a precursor to the magnetic pigment chromium dioxide.It is one of the materials that are used when polishing (also called stropping) the edges of knives, razors
Supplier: Iron oxide, zinc product, aluminum, rutile, ilmenite, struverite, monazite, etc
Buyer: Metal ores, zircon sand
We are glad to propose 500 MT of stain less steel mill scale. Mill scale is formed on the outer surfaces during by the hot rolling lamination of stainless-steel products. At a visual inspection the material is a hard brittle sand and is mainly composed of iron oxides, mostly ferric, and is bluish black in colour, but it also contains considerable alloying elements such as chromium and nickel. The recovery ratio after melting in furnace for the most valuable alloy elements is: - Ni: 3.5 - 4.5% - Cr: 6-8% From the chemical and physical analysis performed on the scrap, and according to the European environmental rules, the material has been classified as a special non dangerous waste, listed in green list. In particular the mill scale can be classified as follows: Waste code: 10 02 10 The material is stored on cemented flooring, and it can be loaded loose in tipper trucks or containers. Chemical analysis of the material is available on request.
Supplier: Remelted zinc ingots, pwg zinc ingots, zinc dross, zinc ash, zinc oxide, lead dross, magnesium ingots, all grades, silicon metal, lead ore/ concentrate, zinc concentrate/sulphide
Buyer: Zinc dross, zinc ash or skimming from hot dip galvanizing process, zinc fines, zinc die cast scraps, lead dross, brass and copper scraps
Supplier: Manufacturers of dyes and pigments like ultramarine blue, malachite green, methylene blue, methyl violet, Red iron oxide , yellow iron oxides
Buyer: Sodium ferrocyanide, sulphur, coaltar pitch
Supplier: Chrome ore, manganese ore, limestone, dolomite, gypsum, bentonite, iron ore, molasses
Supplier: Cerium oxide, chrome flour, carbon, coke powder, red iron oxide, cobalt oxide, aluminum oxide, nickel oxide, lithium carbonate
Supplier: Colour pigments, industrial chemicals,plastisol inks , antioxidant , bentonite /calcium carbonate / mica / talc / wollastonite / feldspar / kaolin (china clay) bezaldehyde , caramel , detergent chemicals , enzymes feed / textile / leather. fragrances , gum & modified gum , leather auxiliaries / chemicals magnesium oxide / magnesium sulphate heptahydrate / monohydrate / anhydrous, maize starch powder (corn starch powder) , manganese sulphate monohydrate / manganese oxide , mono chloro /sodium mono chloro acetate , paint driers , para chloro ortho nitro aniline , disperse dyes, fluorescent coolant dyes (water soluble) , phosgenated salt free / low salt paper colour (direct dyes) ,ultra marine blue pigment , vat indigo blue grain , water soluble fluorescent soap colour / agriculture green , wool dyes, carbon black, detergent & soaps, herbal extract , household & industrial cleaning products