High Purity Chromium Cr Powder CAS 7440-47-3, 99% |

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Chromium Powder is a silvery white metal with a dark gray color. Purity>99.95%
Particle size range: 53-125um

About Chrome Cr Powder
Chromium, a hard, steel-gray metal, is widely used in alloys or as a catalyst. Chromium can be used in the production of stainless steel, and for hardening steel. Chromium can also be used to tint glass an emerald-green color. Chromium is not oxidized in air, even when it is extremely moist.

What is chromium Powder?
Chromium Powder is an silvery-white metallic with a slight dark gray color. Chromium’s melting point equals 1857. The Chromium Boiling Point is 26,72.
Chromium density D28 7.20. Water, nitric, and aqua regia are insoluble. Chromium has the chemical symbol Cr and an atomic numer of 24. It belongs to the VIB Group in the Periodic Table. The Greek name for the element is “color,” as chromium has many colors. Steel-gray is the hardest natural metal. In the Earth’s crust, chromium is present in a 0.01% concentration. This makes it the 17th most abundant element. Metallic chromium can burn at high temperatures with open flame. It is almost harmless to the human body, and there has been no report of industrial poisoning. The hexavalent-chromium ions however are carcinogenic. Store products in iron barrels lined with polyethylene bags in dry, clean and well-ventilated warehouses. Store and transport acids separately. Dry powder and sand are effective in extinguishing fire.

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Product Information about chromium powder (CAS 7440-47-3):

Chromium powder Purity : 99.95%
Copper powder Appearance is grey nanopowder
Copper powder FSSS 53 to 125 Microns
Copper powder Bulk density : 3.8 g/cm3
Chromium powder (COA)


Chemical Composition, ppm








































How is Chromium Cr Powder produced?
In the production of chromium, the calcination process of chromite calcium is used to convert chromium trioxide into sodium chromate, which is leached into sodium chromate solution with dilute solution and water, and then manufactured by electrolysis method.
Electrolysis method: when sodium chromate is used as compensation solution for electrolysis, the cathode solution is 40g/L(Cr), 90g/L (NH4);Anodic solution is 22g/L (Cr), 18g/L (NH4), 200g/ LH2S04.Chromium metal was prepared by electrolysis of stainless steel for cathode and Pb-Ag alloy for anode at the temperature of about 60, cell voltage of 4.8V and current density of 8.6A/CrR12. Due to the high content of silicon, aluminum and other impurities in chromite and its additive, the amount of slag discharged in the process is large, because the slag contains toxic water-soluble Cr6+, which seriously pollutes the environment.
The process developed in recent years: the chromite is first reduced by carbon into carbon ferrochrome, and then oxidized by roasting and leaching with soda ash, dolomite and other mixtures to obtain sodium chromate solution, which is reduced by sulfur and calcined to obtain chromium oxide, and then smelted, sandblasted and finished with aluminum to obtain metal chromium products. The advantage of this method is that most of the impurities in chromite enter the smelting slag, so the total chromium in the mixture can be higher, and the pollution to the environment can be reduced, and the soda ash consumed in the roasting process is less, and the quality of the products can be improved at the same time.

Applications of Chromium Cr Powder:
Chromium uses are very wide. Chromium powder can be used as light-resistant, the heat-resistant coating also can be used as abrasives, glass, ceramic colorant, chemical synthesis of catalyst. Chromium alum and dichromate are used as tanning materials for leather, mordant, impregnating agent and various pigments for fabric dyeing. Chromium plating and chromizing can make steel, copper, aluminum and other metals form a corrosion-resistant surface, and bright and beautiful, widely used in furniture, automobile, construction and other industries. In addition, chrome ore is also used in large quantities to make refractory materials. Used for refining high-temperature alloy, resistance alloy, precision alloy as additive of chromium element. Pure chromium is used for electroplating.

Storage Condition of chromium Cr powder:
The damp reunion will affect chromium Cr powder dispersion performance and using effects, therefore, chromium Cr powder should be sealed in vacuum packing and stored in cool and dry room, the chromium Cr powder can not be exposure to air. In addition, the Cr powder should be avoided under stress.

Packing & Shipping of chromium Cr powder:
We have many different kinds of packing which depend on the chromium Cr powder quantity.
Chromium Cr powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Chromium Cr powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.

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If you are looking for high-quality chromium powder, please feel free to contact us and send an inquiry. (brad@ihpa.net)

Chromium Powder Properties

Other Names Chromium Chips, Chromium Sheet, Chromium Flake
CAS No. 7440-47-3
Compound Formula Cr
Molecular Weight 52
Appearance Silvery
Melting Point 1857
Boiling Point 2672
Density 7.18 g/cm3
Solubility in H2O N/A
Electrical Resistivity 12.96 microhm-cm @ 0 degC
Poisson’s Ratio 0.21
Tensile Strength N/A
Thermal Conductivity 0.939 W/cm/K @ 298.2 K
Thermal Expansion (25 degC) 4.9 um*m -1 *K -1
Vickers Hardness 1060 MN m-2
Young’s Modulus 279 Gpa

Chromium Powder Health & Safety Information

Signal Word Warning
Hazard Statements H400
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A
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