beryllium chemical encyclopedia

Beryllium oxalate

Beryllium oxalate is an inorganic compound, a salt of beryllium metal and oxalic acid with the chemical formula C 2 BeO 4. It forms colorless crystals, dissolves in water, and also forms crystalline hydrates. The compound is used to prepare ultra-pure beryllium oxide by thermal decomposition.. Synthesis. The action of oxalic acid on beryllium hydroxide: + → +

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Chemical Elements

Name: Beryllium Symbol: Be Atomic Number: 4 Atomic Mass: 9.012182 amu Melting Point: 1278.0 °C (1551.15 K, 2332.4 °F) Boiling Point: 2970.0 °C (3243.15 K, 5378.0 °F) Number of Protons/Electrons: 4 Number of Neutrons: 5 Classification: Alkaline Earth Crystal Structure: Hexagonal Density @ 293 K: 1.8477 g/cm 3 Color: gray Atomic Structure

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Beryl | Al2Be3O18Si6

Kirk-Othmer Encyclopedia of Chemical Technology. (1999-2013). New York, NY: John Wiley & Sons. Online Posting Date: 14 Oct 2011 (3) Svilar M et al; Beryllium and Beryllium Compounds. Ullmann''s Encyclopedia of Industrial Chemistry. 7th ed. (1999-2013). New York, NY: John Wiley & Sons. Online Posting Date: 16 Sept 2013

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Beryllium

Beryllium is in group 2 of the periodic table, so it is an alkaline earth metal is grayish (slightly gray) in color. It has an atomic number of 4 and is symbolized by the letters Be is toxic and should not be handled without proper training.. Beryllium has 4 electrons, 4 protons, and 5 neutrons.. Beryllium has one of the highest melting points of the light metals: 1560 K (1287 °C).

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Beryllium, Dimethyl

In class /, it is possible to distinguish between bridge and spiro structures. Spiro structures occur frequently in inorganic raacromolecules, e.g., in beryllium hydride (p. 4), dimethyl beryllium (p. 41), palladium chloride (p. 46), and silicon disulfide,... There is a dearth of structural information about the mixed organometallic compounds. Lithium aluminum tetraethyl is isostructural with ...

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Beryllium carbide | chemical compound | Britannica

Other articles where Beryllium carbide is discussed: carbide: Ionic carbides: The best-characterized methanides are probably beryllium carbide (Be2C) and aluminum carbide (Al4C3). Beryllium oxide (BeO) and carbon react at 2,000 °C (3,600 °F) to produce the brick-red beryllium carbide, whereas pale yellow aluminum carbide is prepared from aluminum and carbon in a furnace.

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Beryllium chloride | BeCl2

Beryllium chloride is a white to green solid with a sharp odor. (USCG, 1999) CAMEO Chemicals. Beryllium dichloride is a compound of beryllium (+2 oxidation state) and chloride in the ratio 1:2. It has a role as a carcinogenic agent and a genotoxin. It is a beryllium molecular entity and an inorganic chloride.

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beryllium | Infoplease

Beryllium is a strong, extremely light, high-melting, silver-gray metal with a close-packed hexagonal crystalline structure. It is an alkaline-earth metal in Group 2 of the periodic table. Beryllium is resistant to corrosion; weight for weight, it is stronger than steel, and because of its low density (about 1/3 that of aluminum) it has found ...

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Chem4Kids : Beryllium: General Info and Everyday Items

Purified beryllium is a grey, hard, steel-like metal that is very poisonous. Another of its characteristics is its non-magnetic quality. Non-magnetic metals are very useful in electronics. Scientists use the letter pair "Be" to represent beryllium in chemical equations and compound descriptions. You can never find beryllium alone.

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Research Beryllium | Chemical Elements

They include beryllium, magnesium, calcium, strontium, barium, and radium. Elements in the same column of the periodic table have similar chemical properties. The periodic table is a chart that shows how the chemical elements are related to each other. Beryllium was discovered by French chemist Louis-Nicolas Vauquelin (1763-1829) in 1798.

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Periodic Table of the Elements: Beryllium | Encyclopedia

Periodic Table, The periodic table is a chart that shows the chemical elements and their relationship to each other. The periodic table is a graphic way of represent… Atomic Number, The atomic number of an element is equal to the number of protons in the nucleus of its atom. For example, the nucleus of an oxygen atom contains eig… Elements, CONCEPT The elements are at the heart of ...

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Beryllium | definition of beryllium by Medical dictionary

beryllium: (Be) [ bĕ-ril´e-um ] a chemical element, atomic number 4, atomic weight 9.012. (See Appendix 6.) Ingestion of excessive amounts can cause berylliosis .

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1 Deborah A. Kramer, Beryllium, from Mineral Commodity ...

13 "Beryllium and Beryllium Alloys," Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed., Vol. IV, 1978, p. 808. 2. Generalized Proc ess Flow Diagram Exhibit 3 (Parts 1-3) presents a generalized process flow diagram for the production of metallic beryllium. Each part of the process is described in greater detail below.

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Beryllium

Beryllium has a melting point of 1,285°C (2,345°F), a boiling point of 2,500°C (4,532°F), and a density of 1.848 g/cm 3 . Its most common oxidation state is +2. It has a high heat adsorption capacity and is nonmagnetic and corrosion-resistant. Beryllium is one of the most toxic elements in the Periodic Table.

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Beryllium, Dimethyl

Big Chemical Encyclopedia Chemical substances, components, reactions, process design ... Articles Figures Tables About. Beryllium, Dimethyl CHLORIDE see DTC600 N>4-DIMETHYL-N -BENZYL-N -(a-PYRIDYL)ETHYLENEDIAMINE see TMP750 DIMETHYL BERYLLIUM see DQR200 DIMETHYLBERYmUM-l,2-DIMETHOXYETHANE see DQR289...

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Ullmann''s Encyclopedia of Industrial Chemistry | Major ...

 · ULLMANN''S Encyclopedia of Industrial Chemistry is now indexed in SciFinder!. ULLMANN''S Encyclopedia of Industrial Chemistry is the benchmark reference in chemistry and chemical and life science engineering, covering inorganic and organic chemicals, advanced materials, pharmaceuticals, polymers and plastics, metals and alloys, biotechnology and biotechnological …

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The Element Beryllium -

Beryllium is a chemical element in the periodic table that has the symbol Be and atomic number 4. A toxic bivalent element, beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal, that is primarily used as a hardening agent in alloys (most notably, beryllium copper). lithium – beryllium – …

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Beryllium (element) | definition of Beryllium (element) by ...

a chemical element, atomic number 4, atomic weight 9.012. (See Appendix 6.) Ingestion of excessive amounts can cause berylliosis.

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Beryllium | Encyclopedia

Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Beryllium compounds are commercially mined, and the Beryllium is purified for use in nuclear weapons and reactors, aircraft and space vehicle structures, instruments, x-ray machines, and mirrors. Beryllium ores are used to make speciality ceramics for electrical and high-technology applications.

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Beryllium, Physical and Chemical Properties | SpringerLink

Beryllium, Physical and Chemical Properties. 1. Department of Mining, Metallurgical, and Materials Engineering Laval University Quebec City Canada. Beryllium is the first member of the alkaline earths but its chemical properties are more similar to aluminum – a property described as "diagonal similarities" (Fig. 1) as discussed below.

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Beryllium

Dangers of Using Beryllium in the Workplace – St. Louis ...

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Beryllium (Be)

From Wikipedia, the free encyclopedia Beryllium is a chemical element with symbol Be and atomic number 4. It is created through stellar nucleosynthesis and is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements in …

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Beryllium

The element beryllium is a grey metal that is stronger than steel and lighter than aluminum. Its physical properties of great strength-to-weight, high melting point, excellent thermal stability and conductivity, reflectivity, and transparency to X-rays make it an essential material in the aerospace, telecommunications, information technology, defense, medical, and nuclear industries.

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Chemistry of Beryllium (Z=4)

 · History. In 1798, N.L. Vauquelin discovered the element in beryl and emerald ryllium was first isolated in 1828 by Wöhler. It is used in specialty alloys such as spring metal in which it increases toughness. It was once known as glucinium because of the sweet taste of its compounds (which, alas, are toxic).

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Beryllium

Beryllium. Encyclopedias. 1911 Encyclopedia Britannica. Beryllium. or Glucinum (symbol Be, atomic weight 9.1), one of the metallic chemical elements, included in the same sub-group of the periodic classification as magnesium. It was prepared in the form of its oxide in 1798 by L. N. Vauquelin ( Ann. de chimie, 1798, xxvi. p. 155) from the ...

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Beryllium

Beryllium-copper alloy is used in tools because it does not make sparks. At standard temperature and pressure, beryllium resists oxidation when exposed to oxygen. Beryllium is best known for the chemical compounds it forms. Beryllium combines with aluminium, silicon and oxygen to make a mineral called beryl.

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Berylliumbromidi – Wikipedia

Berylliumbromidi (BeBr 2) on beryllium- ja bromidi-ionien muodostama epäorgaaninen ioniyhdiste.Yhdistettä voidaan käyttää orgaanisen kemian synteeseissä. Ominaisuudet, valmistus ja käyttö. Berylliumbromidi on huoneenlämpötilassa valkoista tai väritöntä kiteistä ainetta.

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beryllium chemical encyclopedia

beryllium chemical encyclopedia beryllium Properties, Uses, Facts Britannica Beryllium (Be), formerly (until 1957) glucinium, chemical element, the lightest member of the alkaline-earth metals of Group 2 (IIa) of the periodic table, used in metallurgy as a hardening agent and in many outer space and nuclear applications.

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Beryllium Diffusion of Ruby and Sapphire | Gems & Gemology

Beryllium Diffusion of Ruby and Sapphire. Over the past two years, the heat treatment of corundum involving lattice diffusion of beryllium (Be) at temperatures over 1800°C has become a major issue in the gem trade. Although initially only orange to orangy pink ("padparadscha"-like) sapphires were seen, it is now known that a full range of ...

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BERYLLIUM AND BERYLLIUM COMPOUNDS (CICAD 32, 2001)

a From IPCS (1990), ATSDR (1993), and US EPA (1998). b ND = No data. Figure 1 is a simplified chemical speciation diagram for beryllium hydroxide, Be 2+, and HBeO 2 –, showing that minimal beryllium will be in soluble form at pH 7.5 ryllium oxide is amphoteric (like aluminium, beryllium oxide behaves as an acid in the presence of a base, and vice versa) (Cartledge, 1928; Basolo, 1956).

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Beryllium | Article about beryllium by The Free Dictionary

beryllium. [ bə′ril·ē·əm] (chemistry) A chemical element, symbol Be, atomic number 4, atomic weight 9.0122. (metallurgy) A rare metal, occurring naturally in combinations, with density about one-third of aluminum; used most commonly in the manufacture of beryllium-copper alloys which find numerous industrial and scientific applications.

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Beryllium | Definition of Beryllium by Merriam-Webster

 · Beryllium definition is - a chemical element of the alkaline earth metal group with atomic number 4 that occurs naturally in minerals such as beryl and is steel-gray in color, light and strong but brittle, and is used chiefly as a hardening agent in alloys.

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