Beryllium Oxide
Beryllium oxide can be prepared by calcining beryllium carbonate, dehydrating the hydroxide or igniting the metal with oxygen gas, as shown in the following reactions: …
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Beryllium Alloys
Beryllium oxide-containing ceramics are used for high-speed integrated circuits, laser and electronic applications, as well as golf clubs and bicycles. Beryllium–copper alloys are used in the electronics, automotive, defense, and aerospace industries. Beryllium metal is used in fusion reactors, nuclear devices, radar systems, and military ...
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The Brittle Element Beryllium | ChemTalk
Aquamarine and emerald are the most precious forms of beryl, a beryllium-containing mineral with the chemical formula Be 3 Al 2 (SiO 3) 6. ... Beryllium oxide, commonly known as beryllia, has the chemical formula BeO and is a white, amorphous solid in its pure form. The compound was originally named glucina (because of its sweet taste) and ...
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Beryllium and compounds
Beryllium oxide is a white powder with melting point of 2530°C and specific gravity of 3.0. Beryllium chloride is a white to faintly yellow powder, deliquescent, with melting point of 399°C and a boiling point of 482°C. Beryllium fluoride is a glassy, hygroscopic solid with melting point of 545°C and specific gravity of 2.0.
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The dubious origin of beryllium toxicity | Structural …
Metallic beryllium, beryllium alloys, and beryllium oxide are derived from beryllium processing and account for 10%, 75%, and 15% of total beryllium hydroxide use, respectively. ... Beryllium-containing alloys represent the largest percentage (75%) of the beryllium-containing materials market. They are used in electronic, energy, automotive ...
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Beryllium Oxide
Beryllium oxide (BeO) is a space age technical ceramic material that offers a combination of desirable properties not found in any other material. Distinguished by excellent high heat and thermal conductivity, it retains dielectric constant, loss factor and dielectric strength in the range of most electrical insulators.
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Small Entity Compliance Guide for Beryllium in General …
For example, items or parts containing beryllium that employers assemble where the physical integrity of the item is not compromised are unlikely to release beryllium (e.g., inserting a semiconductor wafer into an electronic device). These items would be considered articles that are exempt from the scope of the standard. ... Beryllium oxide ...
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Safety Practices for Working with Beryllium Oxide Products
Beryllium oxide (BeO), in solid form and as contained in finished products, presents no special health risks. However, like many industrial materials, beryllium oxide does …
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Beryllium
Beryllium oxide (called beryllia) is known for its high heat capacity and is an important component of certain sensitive electronic equipment. Beryllium alloys are classified into two types: high beryllium content (up to 30% beryllium) and low beryllium content (2 - 3% …
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Beryllium and Beryllium Compounds
Although more than 40 beryllium-bearing minerals are known, only two (beryl and bertrandite) currently are commercially important. Beryl (3BeO·Al 2 O 3 ·6SiO 2), which contains approximately …
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Beryllium and Beryllium Compounds
approximately 11% beryllium oxide (up to 4% beryllium), is the pre-dominant beryllium-containing mineral mined. Beryl is found largely in Brazil and the former Soviet Union. Impurities in beryl include al-kali metals, alkaline-earth metals, iron, manganese, and phosphorus. Emeralds (beryl containing chromium), aquamarine (beryl contain-
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About Beryllium | Department of Energy
BERYLLIUM-CONTAINING MINERALS ARE FOUND IN ROCKS, COAL AND OIL, SOIL, AND VOLCANIC DUST ... AND OXIDE Soluble salts, such as beryllium fluoride, chloride, and sulfate, are used in nuclear reactors, in glass manufacture, and as catalysts for certain chemical reactions. Beryllium-copper (BeCu) alloys usually contain about 2 percent …
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Beryllium oxide | BeO | CID 14775
Beryllium Oxide is a white colored, crystalline, inorganic compound that emits toxic fumes of beryllium oxides upon heating. Beryllium oxide is widely used in industry due to its low density and high thermal and electrical conductivity. It is used in high-technology ceramics, electronic heat sinks, electrical insulators, high-power devices ...
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BERYLLIUM AND BERYLLIUM COMPOUNDS
The oxidation state of beryllium compounds is +2. Selected chemical and physical properties of beryllium, beryllium–aluminium and …
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Beryllium Oxide
Beryllium oxide has lower density than aluminium oxide; 3010kg.m-3 and 3970 kg.m-3 respectively. The thermal expansion of BeO is similar to that of other oxides. Other physical and mechanical properties …
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Beryllium contamination and its risk management in …
The oxide of phosphorus combines with the Be metal to form strong metal complexes and increases the absorptive capacity of minerals in an aqueous medium. ... and the general public is exposed to Be through inhalation of air and the consumption of food and drinking water containing Be. Beryllium contamination in terrestrial and aquatic ...
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Safety Practices for Working with Beryllium Oxide …
• Cycling of liquid machining lubricant/coolant containing finely divided beryllium oxide in suspension can result in the particle concentration building to a point where beryllium oxide may become airborne during use. • The coolant reservoir should be enclosed and ventilated. • A coolant filtering system is recommended. ...
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Beryllium Compounds
Pure beryllium is a hard gray metal that does not occur naturally but does occur as a chemical component of certain kinds of rocks, coal and oil, soil, and volcanic dust. (1) Beryllium is also present in a variety of compounds such as beryllium fluoride, beryllium chloride, beryllium sulfate, beryllium oxide, and beryllium phosphate. (1)
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Beryllium Oxide
Beryllium oxide (BeO) is a white crystalline oxide. It occurs in nature as the mineral "Bromellite". Historically, ... Beryllium oxide-containing ceramics are used for high-speed integrated circuits, laser and electronic applications, as well as golf clubs and bicycles. Beryllium–copper alloys are used in the electronics, automotive ...
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About Beryllium Properties and its Uses
The three primary forms of beryllium produced are beryllium-containing alloys, pure beryllium metal and beryllia ceramics, also known as beryllium oxide ceramic. Sources of Beryllium. Where does Beryllium come from? Only the United States, China and Kazakhstan process commercial quantities of beryllium from ore into pure beryllium …
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Berylliosis; Symptoms, Treatments
Beryllium-induced lung disease can occur when beryllium dust or fumes are inhaled. There are 2 types of beryllium disease, acute and chronic: Acute beryllium disease is very rare today. Current workplace safety regulations prevent the massive quantities of beryllium that cause acute beryllium disease from being released into the air.
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Beryllium Compounds
Beryllium is also present in a variety of compounds such as beryllium fluoride, beryllium chloride, beryllium sulfate, beryllium oxide, and beryllium phosphate. (1) Pure beryllium is insoluble in water; however, some of its compounds are soluble in water. (1) Conversion Factors (only for the gaseous form):
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New Rule Limits Beryllium Exposure in Dental Labs
The final rule will reduce the 8-hour permissible exposure limit from the previous level of 2.0 µg per cubic meter to 0.2 µg per cubic meter. Above that level, employers must take steps to reduce the airborne concentration of beryllium. The rule also requires additional protections, including personal protective equipment, medical exams ...
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Beryllium Toxicity: Who Is at Risk of Exposure to Beryllium
Key Points. Anyone working with or around beryllium metal, ceramics, alloys, or salts is at risk of developing beryllium sensitization or disease from inhaling small particles. Very low concentrations of beryllium in air can cause sensitization and disease. People living near a plant that uses beryllium and families of workers have developed CBD.
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Beryllium and Beryllium Compounds
Beryllium oxide is the most important high-purity commercial beryllium chemical produced (Kaczynski 2000). It is used in high- ... dominant beryllium-containing mineral mined. Beryl is found largely in Brazil and the former Soviet Union. Impurities in beryl include al-kali metals, alkaline-earth metals, iron, manganese, and phosphorus. ...
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Beryllium
The most common health effects associated with overexposure to beryllium in the workplace include: beryllium sensitization, chronic beryllium disease (CBD), and lung cancer. Beryllium Sensitization - Beryllium sensitization is the activation of the body's immune response to beryllium. Beryllium sensitization can result from inhalation or skin ...
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Beryllium and Beryllium Compounds
Young, adult, male and white rabbits [number unspecified] were given intravenous injections of either a highly purified beryllium oxide or a calcined phosphor containing beryllium oxide, zinc oxide and silica …
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Beryllium and Beryllium Compounds
Beryllium-copper alloy usually contains 4.0% to 4.25% beryllium by weight. It has a melt- ing point of 870°C to 980°C and produces toxic fumes of beryllium oxide upon heating. …
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Beryllium Toxicity
Beryllium oxide, in particular, is known for having a high heat capacity and is used primarily in select electronic equipment. Beryllium alloys can be divided into two categories: high beryllium content (up to 30% beryllium) and low beryllium content (2 to 3% beryllium). ... Potential exposures and risks from beryllium-containing products ...
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Green chemistry models for municipal electronic waste
Each of the separate e-waste materials containing beryllium oxide and solder were grinded and pulverized to powder. Green chemistry beryllium oxide model for municipal e-waste treatment and recycling. The e-waste powder containing beryllium (II) oxide (BeO) was reacted with water to form beryllium hydroxide, Be (OH) 2.
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