Beryllium sulfate

Beryllium Oxide. Beryllium oxide [1304-56-9], BeO, is the most important high purity commercial beryllium chemical. In the primary industrial process, beryllium hydroxide extracted from ore is dissolved in sulfuric acid. The solution is filtered to remove insoluble oxide and sulfate impurities. The resulting clear filtrate is concentrated by evaporation and upon cooling high purity beryllium sulfate, BeSO 4H20, crystallizes. This salt is... 

Ceramic-grade beryllium oxide has also been manufactured by a process wherein organic chelating agents (qv) were added to the filtered beryllium sulfate solution. Beryllium hydroxide is then precipitated using ammonium hydroxide, filtered, and carefully calcined to obtain a high purity beryllium oxide powder. 

Beryllium Sulfate. BeiyUium sulfate tetiahydiate [7787-56-6], BeSO TH O, is produced commeicially in a highly purified state by fiactional crystallization from a berylhum sulfate solution obtained by the reaction of berylhum hydroxide and sulfuric acid. The salt is used primarily for the production of berylhum oxide powder for ceramics. Berylhum sulfate chhydrate [14215-00-0], is obtained by heating the tetrahydrate at 92°C. Anhydrous berylhum sulfate [13510-49-1] results on heating the chbydrate in air to 400°C. Decomposition to BeO starts at about 650°C, the rate is accelerated by heating up to 1450°C. At 750°C the vapor pressure of SO over BeSO is 48.7 kPa (365 mm Hg). 

Chemical Designations - Synonyms Beryllium Sulfate Tetrahydrate Chemical Formula BeS04 4H20. Observable Characteristics - Physical State (as normally shipped) Solid Color White Odor None. Physical and Chemical Properties - Physical State at 15 G and 1 atm. Solid Molecular Weight 177.14 Boiling Point at I atm. Not pertinent (decomposes) Freezing Point Not pertinent Critical Temperature Not pertinent Critical Pressure Not pertinent Specific Gravity 1.71 at 11°C (solid) Vapor (Gas) Density Not pertinent Ratio of Specific Heats of Vapor (Gas) Not pertinent Latera Heat of Vaporization Not pertinent Heat of Combustion Not pertinent Heat of Decomposition Not pertinent. 

Be NMR spectra are often referenced to aqueous beryllium sulfate as an external standard. Unfortunately, many workers using the standard appear to be unaware that the frequency of the observed line shifts to higher field with increasing concentration of sol-... 

Synonyms/compounds Glucinium beryllium oxide beryllium chloride beryllium fluoride beryllium hydroxide beryllium phosphate beryllium nitrate beryllium sulfate beryllium carbonate... 

Beryllium metal, beryllium-aluminum alloy, beryl ore, beryllium chloride, beryllium fluoride, beryllium hydroxide, beryllium sulfate, and beryllium oxide all produce lung tumors in rats exposed by inhalation or intra-tracheally. The oxide and the sulfate produce lung tumors in monkeys after intrabronchial implantation or inhalation. A number of compounds produce osteosarcomas in rabbits after their intravenous or intramedullary administration. ... 

BeryUium nitrate is made by dissolving beryUium oxide or hydroxide in concentrated nitric acid, followed by crystallization. Also, it may be prepared by mixing beryllium sulfate and barium nitrate solutions followed by evaporation and crystallization. 

Also, it may be prepared by heating beryllium sulfate at elevated temperatures. Dissociation begins at 550°C and completes at 1,000°C. 

No major commercial application of beryllium sulfate is known. 

Beryllium sulfate may be prepared by treating an aqueous solution of any beryllium salt with sulfuric acid, followed by evaporation of the solution and... 

Beryllium sulfate (see Beryllium and beryllium compounds) Beryl ore (see Beryllium and beryllium compounds)... 

Extraction of Bertrandite. Bertrandite-containing tuff from the Spor Mountain deposits is wet milled to provide a thixotropic, pumpable slurry of below 840 im (—20 mesh) particles. This slurry is leached with sulfuric acid at temperatures near the boiling point. The resulting beryllium sulfate [13510 49-1] solutionis separated from unreacted solids by countercurrent decantation thickener operations. The solution contains 0.4—0.7 g/L Be, 4.7 g/L Al, 3—5 g/L Mg, and 1.5 g/L Fe, plus minor impurities including uranium [7440-61-1], rare earths, zirconium [7440-67-7], titanium [7440-32-6], and zinc [7440-66-6]. Water conservation practices are essential in semiarid Utah, so the wash water introduced in the countercurrent decantation separation of beryllium solutions from solids is utilized in the wet milling operation. 

Impairment of the immune response has also been demonstrated with beryllium in experimental animals (136). The long latency period associated with berylliosis development may in fact be a delayed immune response. This hypothesis is supported by the finding that lymphocyte cultures obtained from chronically exposed workers underwent a high degree of blast formation when challenged with beryllium sulfate (137). The authors suggest that this test may serve as a screen for detecting hypersensitive individuals. 

Beryllium sulfate, [CAS 13510-49-1], BeSO 4H2O, is an important salt of beryllium used as an intermediate of high purity for calcination to beryllium oxide powder for ceramic applications. A saturated aqueous solution of beryllium sulfate contains 30.5% BeSC>4 by weight at 303C and 65.2% at 111"C. 

Beryllium Sulfate. See under Sulfates. Its use in smoke-producing compns was patented by J.DeMent... 

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