Description Chemical properties Uses Uses Toxicity Production methods Hazards & Safety Information Sources
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Cupric oxide

Description Chemical properties Uses Uses Toxicity Production methods Hazards & Safety Information Sources
Cupric oxide Structure
Cupric oxide
  • CAS No.1317-38-0
  • Chemical Name:Cupric oxide
  • CBNumber:CB6853040
  • Molecular Formula:CuO
  • Formula Weight:79.55
  • MOL File:1317-38-0.mol
Cupric oxide Property
  • Melting point: :1326 °C
  • Density  :6.315
  • refractive index  :2.63
  • storage temp.  :Store at +5°C to +30°C.
  • form  :powder
  • color  :Brown to black
  • Specific Gravity :6.3-6.49
  • PH :7 (50g/l, H2O, 20℃)(slurry)
  • Water Solubility  :insoluble
  • Merck  :14,2646
  • Stability: :Stable. Incompatible with reducing agents, hydrogen sulfide, aluminium, alkali metals, finely powdered metals.
  • CAS DataBase Reference :1317-38-0(CAS DataBase Reference)
  • FDA UNII :V1XJQ704R4
  • NIST Chemistry Reference :Copper(ii) oxide(1317-38-0)
  • EPA Substance Registry System :Cupric oxide (1317-38-0)
Safety
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordWarning
  • Hazard statements H400-H412-H410-H302
  • Precautionary statements P273-P264-P270-P301+P312a-P330-P501a
Cupric oxide Price More Price(56)
  • Brand: Sigma-Aldrich
  • Product number: 203130
  • Product name : Copper(II) oxide
  • Purity: 99.999% trace metals basis
  • Packaging: 5g
  • Price: $82.2
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 203130
  • Product name : Copper(II) oxide
  • Purity: 99.999% trace metals basis
  • Packaging: 25g
  • Price: $320
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 1.02766
  • Product name : Copper(II) oxide
  • Purity: powder for analysis EMSURE? ACS
  • Packaging: 100 g
  • Price: $540.2
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 1.02764
  • Product name : Copper(II) oxide
  • Purity: granular for elementary analysis
  • Packaging: 250 g
  • Price: $1100.75
  • Updated: 2021/03/22
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  • Brand: Sigma-Aldrich
  • Product number: 1.02768
  • Product name : Copper(II) oxide
  • Purity: granular for analysis EMSURE?
  • Packaging: 500 g
  • Price: $1813
  • Updated: 2021/03/22
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Cupric oxide Chemical Properties,Usage,Production

  • Description Copper (II) oxide is used for blue-green pigmentation in ceramics. As a naturally occurring compound produced from mining, it is also used as a precursor to other cooper applications, including fungicide and wood preservatives. In this capacity, it is used as an antifouling paint agent for boat hulls, and other outdoor, freshwater, and seawater wood constructions. It is also occasionally used for animal feed, but incorrectly, as its copper bioavailability is inferior to of a number of other compounds including cupric acetate and alkaline Cu carbonate. Other uses include preparation of superconductors, manufacture of batteries, and as a catalyst for various industrial processes.
  • Chemical properties Black monoclinic crystal or black to brown-black amorphous crystalline powder; Insoluble in water and alcohol; soluble in dilute acid, ammonium chloride, ammonium carbonate and potassium cyanide.
  • Uses Copper(II) oxide is used as pigments for coloring glass, ceramics, porcelain and artificial gems; in batteries and electrodes; in antifouling paints; in electroplating; in welding fluxes for bronze; in the production of rayons; for removal of sulfur from oils; in phosphor mixtures; for polishing optical glass; and as a catalyst. It also is used to prepare various copper compounds. Copper(II) oxide is found in nature as the minerals tenorite and paramelaconite. They differ in crystalline structure: tenorite exists as triclinic crystals while paramelaconite consists of tetrahedral cubic crystals.
  • Uses 1. Cupric oxide Can Used for glass, porcelain colorants, oil desulfurization agent, hydrogenation agent, organic synthesis catalyst, and also used in the manufacture of rayon, gas analysis, etc.
    2. Used as analytical reagent (for nitrogen determination), oxidant and catalyst.
    3. Used for the coloring agents in glass, enamel and ceramic industry, the anti-wrinkle agents of paint and the polish of optical glass. Used in the manufacture of dyes, organic catalyst carriers and copper compounds. Also used in the manufacture of artificial silk and oil desulfurization agents. Used as the raw materials of other nantokites and artificial gemstones.
    4. Used as the pigments of glass and porcelain, desulfurization agents, catalysts, and also used in rayon industry
    5. Used for the determination of carbon compounds in organic compounds
    6. Used as analytical reagents, oxidants, catalysts and petroleum desulfurizers.
    7. Cupric oxide Can used for the coloring agents in glass, enamel and ceramic industry, the anti-wrinkle agents of paint and the polish of optical glass. Used in the manufacture of dyes, organic catalyst carriers and copper compounds. Also used in the manufacture of artificial silk and oil desulfurization agents. Used as the raw materials of other nantokites and artificial gemstones.
    8. Used for blue green pigments, artificial gemstones, colored glass, ceramic glaze, oil desulfurization agents and organic synthesis catalysts, as well as for the carbon determination in gas analysis. The applications of Nano-copper oxide: (1) as an important inorganic material, it has a wide range of applications in the catalytic, superconducting, ceramics and other fields; (2) used as catalyst , catalyst carrier and electrode active material;(3) used for the colorants of glass and porcelain, the polishing agents of optical glass, organic synthesis catalysts, oil desulfurization agents and hydrogenation agents;(4) used for the manufacture of artificial gemstones and other copper oxides;(5) used for rayon manufacture, gas analysis and organic compounds determination;(6) used as the burning rate catalyst of rocket propellant. Nano-copper oxide powder has more excellent catalytic activity and selectivity than the large-sized copper oxide powder.
  • Toxicity see cuprous oxide.
  • Production methods 1.  Copper powder oxidation method. Reaction equation:
    4Cu + O2 → 2Cu2O
    2Cu2O + 2O2 → 4CuO
    CuO + H2SO4 → CuSO4 + H2O
    CuSO4 + Fe → FeSO4 + Cu↓
    2Cu + O2 → 2CuO
    Operating methods: roast the raw materials of copper ash and copper slag, and then heat them with gas for the initial oxidation to remove the water and organic impurities in raw materials. The resulting primary oxides are naturally cooled, pulverized, and then subjected to secondary oxidation to obtain crude copper oxides. Add crude copper oxides to the reactor pre-loaded 1: 1 sulfuric acid, and react under heating and stirring until the relative density of the liquid doubles and the pH value becomes 2 to 3. After the generated copper sulfate solution stands until clarification, add iron shavings under heating and stirring conditions to replace copper, and then wash the mixture with hot water to remove sulfate and iron. After centrifugal separation and drying, the above copper is oxidized and roasted for 8 hours at 450℃. Then the crude products are cooled and crushed to 100 mesh. After oxidized in oxidizing furnace, the final copper oxide powders are obtained by centrifugal separation.
    2.  Copper powder oxidization method:
    roast the raw materials of copper ash and copper slag, and then heat them with gas for the initial oxidation to remove the water and organic impurities in raw materials. The resulting primary oxides are naturally cooled, pulverized, and then subjected to secondary oxidation to obtain crude copper oxides. Add crude copper oxides to the reactor pre-loaded 1: 1 sulfuric acid, and react under heating and stirring until the relative density of the liquid doubles and the pH value becomes 2 to 3. After the generated copper sulfate solution stands until clarification, add iron shavings under heating and stirring conditions to replace copper, and then wash the mixture with hot water to remove sulfate and iron. After centrifugal separation and drying, the above copper is oxidized and roasted for 8 hours at 450℃. Then the crude products are cooled and crushed to 100 mesh. After oxidized in oxidizing furnace, the final copper oxide powders are obtained.
    4Cu+O2→2Cu2O
    Cu2O+0.5O2→2CuO
    Cu0+H2S04→CuSO4+H2O
    CuSO4+Fe→FeSO4+Cu↓
    2Cu+O2→2CuO
  • Hazards & Safety Information Category : Toxic substances
    Toxicity classification  : high toxicity
    Acute toxicity :  Oral-rat LD50 470 mg/kg; celiac-mouse LD50: 273 mg/kg
    Flammability Hazardous properties  :
    Non-combustible; producing toxic copper-containing fumes in fire
    Storage and transportation characteristics  :
    Storehouse should be low-temperature, well-ventilated and dry; stored separately with food and raw materials
    Fire extinguishing agent  : water, carbon dioxide, dry powder, sand
  • Sources http://www.encyclopedia.com/science/academic-and-educational-journals/copperii-oxide
    http://jn.nutrition.org/content/129/12/2278.short
    https://en.wikipedia.org/wiki/Copper(II)_oxide
  • Chemical Properties Black fine free powder
  • Chemical Properties Copper metal, metal compounds and alloys are often used in “hot” operations in the workplace. The workplace operations include, but are not limited to, welding, brazing, soldering, plating, cutting, and metalizing. At the high temperatures reached in these operations, metals often form metal fumes that have different health effects.
  • Uses As pigment in glass, ceramics, enamels, porcelain glazes, artificial gems; in manufacture of rayon, other Cu Compounds; in sweetening petroleum gases; in galvanic electrodes; as flux in metallurgy; in correcting Cu deficiencies in soil; as optical-glass polishing agent; in antifouling paints, pyrotechnic compositions; as exciter in phosphor mixtures; as catalyst for organic reactions; in high tempereture superconductors.
  • Definition A black solid prepared by the action of heat on copper(II) nitrate, hydroxide, or carbonate. It is a basic oxide and reacts with dilute acids to form solutions of copper(II) salts. Copper(II) oxide can be reduced to copper by heating in a stream of hydrogen or carbon monoxide. It can also be reduced by mixing with carbon and heating the mixture. Copper(II) oxide is stable up to its melting point, after which it decomposes to give oxygen, copper(I) oxide, and eventually copper.
  • Health Hazard Exposures to copper fume cause fever, chills, muscle aches, nausea, dry throat, coughing, weakness, lassitude, irritation to the eyes, nose, throat, skin, upper respiratory tract, chest tightness, nose bleed, edema, and lung damage. Symptoms of copper fume poisoning also include metallic or sweet taste, skin itching, skin rash, skin allergy, and a greenish color to the skin, teeth, and hair. Workers have increased risk of Wilson’s disease.
  • Precautions Occupational workers should use protective clothing, such as suits, gloves, footwear, and headgear, and promptly change the contaminated clothing/work dress. Workers should not eat, smoke, or drink where copper dust or powder is handled, processed, or stored. Workers should wash hands carefully before eating, drinking, smoking, or using the toilet. The workplace should have a vacuum or a wet method facility to reduce the metal dust during cleanup
Cupric oxide Preparation Products And Raw materials
Raw materials
Preparation Products
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