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BERYLLIUM OXIDE

BERYLLIUM OXIDE Suppliers list
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Products Intro: Product Name:BERYLLIUM OXIDE
CAS:1304-56-9
Purity:97%-99% Package:1KG;8.8USD
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Products Intro: Product Name:beryllium oxide
CAS:1304-56-9
Purity:99% Package:5KG;1KG
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Products Intro: Product Name:BERYLLIUM OXIDE
CAS:1304-56-9
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Products Intro: Product Name:BERYLLIUM OXIDE
CAS:1304-56-9
Purity:0.98 Package:1kg,2kg,5kg,10kg,25kg
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
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Products Intro: Product Name:Beryllium oxide
CAS:1304-56-9

BERYLLIUM OXIDE manufacturers

  • BERYLLIUM OXIDE
  • $8.80 / KG
  • 2019-07-14
  • CAS:1304-56-9
  • Min. Order: 1KG
  • Purity: 97%-99%
  • Supply Ability: 100kg
BERYLLIUM OXIDE Basic information
Uses
Product Name:BERYLLIUM OXIDE
Synonyms:Beryllium oxide (metals basis);BroMellite;Beryllium monoxide;Beryllium oxide, 99% trace metals basis;BERYLLIUM (II) OXIDE;BERYLLIUM OXIDE;Berylla;Beryllia
CAS:1304-56-9
MF:BeO
MW:25.01
EINECS:215-133-1
Product Categories:metal oxide;Beryllium;BerylliumMetal and Ceramic Science;Catalysis and Inorganic Chemistry;Chemical Synthesis;Oxides
Mol File:1304-56-9.mol
BERYLLIUM OXIDE Structure
BERYLLIUM OXIDE Chemical Properties
Melting point 2575°C
Boiling point 4300°C
density 3.01 g/mL at 25 °C(lit.)
refractive index 1.733
Fp 4300°C
form Powder
Specific Gravity3.01
color white
Water Solubility Insoluble in water. Slowly soluble in concentrated acids, alkali hydroxides
Crystal StructureHexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc
Merck 14,1172
Stability:Stable.
CAS DataBase Reference1304-56-9(CAS DataBase Reference)
EPA Substance Registry SystemBeryllium oxide (1304-56-9)
Safety Information
Hazard Codes T+
Risk Statements 49-25-26-36/37/38-43-48/23
Safety Statements 53-45
RIDADR UN 1566 6.1/PG 2
WGK Germany 1
RTECS DS4025000
TSCA Yes
HazardClass 6.1
PackingGroup II
Hazardous Substances Data1304-56-9(Hazardous Substances Data)
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
BERYLLIUM OXIDE Usage And Synthesis
UsesBeryllium oxide (BeO) is a beryllium compound produced in significant commercial quantities. The chemical process starts with minerals containing aluminum silicate and silicon dioxide and undergoes a number of chemical reactions, some at high temperatures, to end up with BeO.
DescriptionBeryllium oxide (BeO) is formed by the ignition of beryllium metal in an oxygen atmosphere. The resulting solid is colourless and insoluble in water.
Physical propertiesBeryllium oxide (BeO) is a white crystalline oxide. It occurs in nature as the mineral “Bromellite”. Historically, beryllium oxide was called glucina or glucinium oxide. It is an electrical insulator and its thermal conductivity is such that it is higher than any other nonmetal except diamond, and actually exceeds that of some metals. Its high melting point leads to its use as a refractory.
Beryllium oxide
UsesBeryllium oxide is used in the manufacture of high-temperature refractory material and high-quality electrical porcelains, such as aircraft spark plugs and ultrahigh-frequency radar insulators. The high thermal conductivity of beryllium oxide and its good high- frequency electrical insulating properties find application in electrical and electronic fields.
Another use of beryllium oxide is as a slurry for coating graphite crucibles to insulate the graphite and to avoid contamination of melted alloys with carbon. Beryllium oxide crucibles are used where exceptionally high-purity or reactive metals are being melted. In the field of beryllium oxide ceramics, a type of beryllia has been developed that can be formed into custom shapes for electronic and microelectronic circuits. Beryllium oxide has a high thermal conductivity, equal to that of aluminum, and excellent insulating properties, which permits closer packing of semiconductor functions in silicon integrated circuits.
UsesBeryllium oxide is used in many high-performance semiconductor parts for applications such as radio equipment because of its good thermal conductivity while also being a good electrical insulator. It is used as a filler in some thermal interface materials such as “THERMAL GREASE”.Some high-powered semiconductor devices have used beryllium oxide ceramic between the silicon chip and the metal mounting base of the package in order to achieve a higher degree of thermal conductivity than for a similar construction made with Al2O3. It is also used as a structural ceramic for high-performance microwave devices, vacuum tubes, magnetrons and gas lasers. Beryllium oxide (BeO) is a space age technical ceramic material that offers a combination of desirable properties not found in any other material.
PreparationBeryllium oxide can be prepared by calcining beryllium carbonate, dehydrating the hydroxide or igniting the metal with oxygen gas, as shown in the following reactions:
BeCO3→BeO+CO2
Be(OH)2→BeO+H2O
2Be+O2→2BeO
Igniting beryllium in air
DefinitionChEBI: A beryllium molecular entity consisting of beryllium (+2 oxidation state) and oxide in the ratio 1:1. In the solid state, BeO adopts the hexagonal wurtzite structure form while in the vapour phase, it is present as discrete diatomic covalent molecules.
General DescriptionOdorless white solid. Sinks in water.
Air & Water ReactionsThe amount of heat generated by hydrolysis may be large.
Reactivity ProfileBERYLLIUM OXIDE is incompatible with the following: Acids, caustics, chlorinated hydrocarbons, oxidizers, molten lithium, magnesium .
HazardHighly toxic by inhalation. Keep container tightly closed and flush out after use.
Health HazardAny dramatic, unexplained weight loss should be considered as possible first indication of beryllium disease. Other symptoms include anorexia, fatigue, weakness, malaise. Inhalation causes pneumonitis, nasopharyngitis, tracheobronchitis, dyspnea, chronic cough. Contact with dust causes conjunctival inflammation of eyes and irritation of skin.
Fire HazardSpecial Hazards of Combustion Products: Toxic BERYLLIUM OXIDE fume may form in fire.
Industrial usesA colorless to white crystalline powder of the composition beryllium oxide, also called beryllia. It has a specific gravity of 3.025, a high melting point, about 2585 C, and a Knoop hardness of 2000. It is used for polishing hard metals and for making hot-pressed ceramic parts. Its high heat resistance and thermal conductivity make it useful for crucibles, and its high dielectric strength makes it suitable for high-frequency insulators. Single-crystal beryllia fibers, or whiskers, have a tensile strength above 6800 MPa.
Beryllium oxide is tapped for nuclear reactor service because of its refractoriness, high thermal conductivity, and ability to moderate (slow down) fast neutrons. The thermal neutrons that result are more efficient in causing fusion of uranium- 235. Nuclear industry uses for beryllia include reflectors and the matrix material for fuel elements. When mixed with suitable nuclear poisons, beryllium oxide may be a new candidate for shielding and control rod assembly applications.
Safety ProfileConfirmed carcinogen withexperimental tumorigenic data. Experimental teratogenicdata. Other experimental reproductive effects. Incompatible with (Mg +heat). When heated to decomposition it emits very toxicfumes of BeO.
BERYLLIUM OXIDE Preparation Products And Raw materials
Preparation Productsberyllium chloride-->Beryllium nitrate
Tag:BERYLLIUM OXIDE(1304-56-9) Related Product Information
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