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process for the preparation of anhydrous sodium sulfate patent us

US5871551A - Process for the preparation of anhydrous sodium ... CachedA process for the preparation of anhydrous sodium from a thenardite ore containing sodium sulfate comprising the steps of: crushing the thenardite ore; lixiviating the crushed ore in a first...

US8460631B2 - Processing of manganous ... - Google Patents CachedThe sodium sulphate and sodium dithionate dehydrate crystals are then heated to form anhydrous sodium sulphate, sulfur dioxide and water or steam. The anhydrous sodium sulphate is then separated...

Sodium sulfate Na2SO4 - PubChem Sodium Sulfate Anhydrous is the anhydrous, sodium salt form of sulfuric acid.Sodium sulfate anhydrous disassociates in water to provide sodium ions and sulfate ions. Sodium ion is the principal ion of the extracellular fluid and plays a large part in the therapy of fluid and electrolyte disturbances.

Sodium acetate CH3COONa - PubChem Sodium Acetate Anhydrous is the anhydrous, sodium salt form of acetic acid.Sodium acetate anhydrous disassociates in water to form sodium ions Na and acetate ions. Sodium is the principal ion of the extracellular fluid and plays a large part in fluid and electrolyte replacement therapies.

Sodium sulfate - chemeurope.com CachedHistoryPhysical and Chemical PropertiesProductionAppli ionsSafetyReferencesGlauber& 39;s salt is named after Johann Rudolf Glauber, who discovered it in the 17th century in Hungarian spring water, and named it sal mirabilis miraculous salt , because of its medicinal properties. The white or colourless crystals of Glauber& 39;s salt were used as a laxative until more sophisti ed alternatives came about in 1900s. In the eighteenth century, Glauber& 39;s salt began to be used as a Seven Trust material for the production of soda ash, by reaction with potash. In the nineteenth century the Leblanc processbecame the principal method of soda production, and one of the world& 39;s major chemical processes, using synthetic sodium sulfate as a key intermediate. See full list on chemeurope.com Sodium sulfate is chemically very stable, being unreactive toward most oxidising or reducing agents at normal temperatures. At high temperatures, it can be reduced to sodium sulfide. It is a neutral salt, which forms aqueous solutions with pH of 7. The neutrality of such solutions reflects the fact that Na2SO4 is derived, formally speaking, from the strong acid sulfuric acid and a strong base sodium hydroxide. Sodium sulfate reacts with an equivalent amount of sulfuric acid to give an equilibrium concentration of the acid salt sodium bisulfate: 1. Na2SO4 aq H2SO4 aq ⇌ 2 NaHSO4 aq In fact, the equilibrium is very complex, depending on concentrationand temperature, with other acid salts being present. Sodium sulfate is a typical ionic sulfate, containing Na ions and SO42− ions. Aqueous solutions can produce precipitates when combined with salts of Ba2 or Pb2 , which form insoluble sulfates 1. Na2SO4 aq BaCl2 aq 2 NaCl aq BaSO4 s Sodium sulfate has unusual solubility c... See full list on chemeurope.com The world production of sodium sulfate, mostly in the form of the decahydrate amounts to approximately 5.5 to 6 million tonnes annually Mt/a . In 1985, production was 4.5 Mt/a, half from natural sources, and half from chemical production. After 2000, at a stable level until 2006, natural production had increased to 4 Mt/a, and chemical production decreased to 1.5 to 2 Mt/a, with a total of 5.5 to 6 Mt/a.For all appli ions, naturally produced and chemically produced sodium sulfate are practically interchangeable. See full list on chemeurope.com Commodity industries With USA pricing at $30 per metric tonne in 1970, in 2006 up to $90 per metric tonne for salt cake quality and $130 for better grades, sodium sulfate is a very cheap material. The largest use is as filler in powdered home laundry detergents, consuming approx. 50% of world production. This use is waning as domestic consumers are increasingly switching to compact or liquid detergents that do not include sodium sulfate. Another formerly major use for sodium sulfate, notably in the USA and Canada... Thermal storage The high heat storage capacity in the phase change from solid to liquid, and the advantageous phase change temperature of 32 degrees Celsius 90 degrees Fahrenheit makes this material especially appropriate for storing low grade solar heat for later release in space heating appli ions. In some appli ion the material is incorporated into thermal tiles that are placed in an attic space while in other appli ions the salt is incorporated into cells surrounded by solar–heated water. The pha... Small scale appli ions In the laboratory, anhydrous sodium sulfate is widely used as an inert drying agent, for removing traces of water from organic solutions. It is more efficient, but slower-acting, than the similar agent magnesium sulfate. It is only effective below about 30  C, but it can used with a variety of materials since it is chemically fairly inert. Sodium sulfate is added to the solution until the crystals no longer clump together; the two video clips see above demonstrate how the crystals clump whe... See full list on chemeurope.com Although sodium sulfate is generally regarded as non-toxic, it should be handled with care. The dust can cause temporary asthma or eye irritation; this risk can be prevented by using eye protection and a paper mask. Transport is not limited, and no Risk Phrase or Safety Phraseapply. See full list on chemeurope.com ^ Szydlo, Zbigniew 1994 . Water which does not wet hands: The Alchemy of Michael Sendivogius. London-Warsaw: Polish Academy of Sciences.^ Aftalion, Fred 1991 . A History of the International Chemical Industry. Philadelphia: University of Pennsylvania Press, pp. 11–16. ISBN 0-8122-1297-5.^ 1990 Handbook of Chemistry and Physics, 71st edition, Ann Arbor, Michigan: CRC Press.^ 1960 The Merck Index, 7th edition, Rahway, New Jersey, USA: Merck & Co..See full list on chemeurope.com

Drying agents - University of California, Los Angeles CachedMar 21, 2016 · 3. Magnesium sulfate n=7, e=2.8 mg/L is a slightly acidic drying agent. It works well in solvents like diethyl ether, but not as well for ethyl acetate. It is a fast drying agent, in part because it comes as a fine powder with a large surface area. 4. Sodium sulfate n=10, e=25 mg/L has a very high capacity and is mainly used for very wet ...

Sodium carbonate Na2CO3 - PubChem Soda ash, also known as sodium carbonate Na2CO3 , is an alkali chemical refined from the mineral trona or naturally occurring sodium carbonate-bearing brines the soda ash from both is referred to as natural soda ash or manufactured from one of several chemical processes the soda ash from this process is referred to as synthetic soda ash .

Sodium sulfate Article about sodium sulfate by The Free ... CachedSodium sulfate is soluble in cold water and very soluble in hot water. It forms two hydrates; the decahydrate is Glauber& 39;s salt Glauber& 39;s salt, common name for sodium sulfate decahydrate, Na 2 SO 4 ·10H 2 O; it occurs as white or colorless monoclinic crystals. Upon exposure to fairly dry air it effloresces, forming powdery anhydrous sodium ...

Process to Produce Sodium Sulfate and Magnesium Hydroxide ... CachedDec 14, 2007 · TECHNICAL BACKGROUND OF THE INVENTION. This invention is related with a process to produce sodium sulfate and magnesium hydroxide. Particularly, the invention is related with the precipitation of Mg as Mg OH 2 with an alkali, which consumes and regenerates within an internal cycle of the same process; the precipitation of Na is carried out by adding a salt more soluble than Na 2 SO 4 ...

US7169381B2 - Colon cleansing compositions ... - Google Patents CachedA composition comprising, per liter of aqueous solution, from 30 to 350 g polyethylene glycol, from 3 to 20 g of an ascorbic acid component selected form the group consisting of ascorbic acid, a salt of ascorbic acid, or a mixture thereof, an alkali metal or alkaline earth metal sulphate, preferably from 1 to 15 g thereof, and optionally one or more electrolytes selected from sodium chloride ...

US Patent for Cost-effective process for preparation of ... CachedDec 02, 2005 · US 2003/0216566A1 assigned to Patel, et. al discloses a method for preparation of a complex of sodium ferric gluconate in sucrose comprising reaction of sodium gluconate with ferric oxyhydroxide to give sodium ferric gluconate which is freeze-dried. The complex thus obtained is added to sucrose solution to give sodium ferric gluconate in sucrose.

Sodium sulfate CAS 7757-82-6 106649 - Merck Millipore CachedSodium sulfate CAS 7757-82-6 anhydrous for analysis EMSURE ACS,ISO,Reag. Ph Eur - Find MSDS or SDS, a COA, data sheets and more information.

Process for preparing a hydrosilylation alyst - Toa Nenryo ... CachedUnited States Patent 4820674 Abstract: A process for preparing a hydrosilylation alyst by dissolving chloroplatinic acid H 2 PtCl 6 in a cyclic ether or cyclic ester containing at least 3 carbon atoms, and maintaining the resulting solution at a temperature of at least 30 C.

Drying Agents Lab Chemicals MilliporeSigma CachedSodium hydroxide: Pellets: ACS Grade: SX0590: Sodium sulfate: Granular 10-60 Mesh: Anhydrous, ACS Grade Anhydrous, Tracepur Grade: SX0760 SX0760E: t.h.e. desiccant: 8 Mesh 8 Mesh 6-8 Mesh: Non-Indi ing 8% Indi ing 100% Indi ing: DX0013 DX0014 DX0017

SODIUM SULFAT anhydraus Sigma-Aldrich CachedSynonym: 5-Cholesten-3β-ol sulfate sodium salt, Cholesterol 3-sulfate sodium salt, Cholesteryl sodium sulfate, Cholesteryl sulfate sodium salt Empirical Formula Hill Notation : C 27 H 45 NaO 4 S Molecular Weight: 488.70

sodium sylphate anhydrous Sigma-Aldrich CachedSodium Acetate, 3M, pH 5.2, Molecular Biology Grade - CAS 127-09-3 - Calbiochem 1 Product Result Match Criteria: Keyword

Preparation of Buffer Solutions : Pharmaceutical Guidelines CachedAcetate Buffer pH 3.7: Dissolve 10 g of anhydrous sodium acetate in 300 ml of water, adjust the pH to 3.7 with glacial acetic acid and dilute with water to 1000 ml. Before use adjust to pH 3.7, if necessary, with glacial acetic acid or anhydrous sodium acetate, as required.

Process to Produce Sodium Sulfate and Magnesium Hydroxide ... CachedDec 14, 2007 · TECHNICAL BACKGROUND OF THE INVENTION. This invention is related with a process to produce sodium sulfate and magnesium hydroxide. Particularly, the invention is related with the precipitation of Mg as Mg OH 2 with an alkali, which consumes and regenerates within an internal cycle of the same process; the precipitation of Na is carried out by adding a salt more soluble than Na 2 SO 4 ...

Sodium sulfate 7757-82-6 CachedIndustrial preparation of sodium sulfate is mainly isolated from natural mineral or by the mirabilite dehydration and treatment with sulfuric acid to obtain sodium chloride. Sodium sulfate is also the byproduct of a lot of chemical industrial production sector and can be extracted from the waste liquid discharged during the production of ...

Sodium sulfate CAS : 7757-82-6 CachedSodium sulfate is an important Seven Trust material in the manufacturing of glass and paper with the maximum usage amount in the paper and cellulose industry which accounts for around 70% of the total amount. Sodium sulfate is the component of synthetic detergent and is a neutral salt.

What are the physical and chemical properties of sodium sulfate product. It is mainly used for the manufacture of detergents and in the kraft process of paper pulping. 3 Forms Anhydrous sodium sulfate, known as the rare mineral thenardite, used as a drying agent in organic synthesis. Heptahydrate sodium sulfate, a very rare form. Decahydrate sodium sulfate, known as the mineral mirabilite, widely

Sodium acetate CH3COONa - PubChem Sodium Acetate Anhydrous is the anhydrous, sodium salt form of acetic acid.Sodium acetate anhydrous disassociates in water to form sodium ions Na and acetate ions. Sodium is the principal ion of the extracellular fluid and plays a large part in fluid and electrolyte replacement therapies.

Thermodynamics of crystallization of sodium sulfate ... Jan 28, 2000 · Besides, measurements of crystallization enthalpies of mirabilite from supersaturated H 2 O–Na 2 SO 4 solutions led us to values of heat of hydration of anhydrous sodium sulfate into decahydrate. These values are in good agreement with values of the literature 13 , 14 which were obtained by a completely different method.

Sodium sulfate supplier Cas 5124-09-1 CachedSodium sulfate is the sodium salt of sulfuric acid. When anhydrous, it is a white crystalline solid of formula Na 2 SO 4 known as the mineral thenardite. Sodium sulfate is mainly used for the manufacture of detergents and in the Kraft process of paper pulping.

Sodium sulfate CachedSodium sulfate ... Other names

Process for making cupric hydroxide - Cuproquim S.A. CachedOne technique uses a copper sulfate solution reacted with ammonia to form cupric hydroxide and a compound containing the sulfate radical for particular use in the preparation of a cuprammonium cellulose solution in making rayon as disclosed in U.S. Pat. No. 2,758,013.

Patent 2689052 Summary - Canadian Patents Database Cachedmethod of United States Pharmacopeia USP . 13. A pharmaceutical solid oral preparation comprising Anhydrous Aripiprazole Crystals C and one or more pharmaceutically acceptable carriers, which has at least one dissolution rate selected from the group consisting of 60% or more at pH 4.5 after 30 minutes, 70% or more at pH 4.5 after 60 minutes, and

Thermodynamics of crystallization of sodium sulfate ... Jan 28, 2000 · Besides, measurements of crystallization enthalpies of mirabilite from supersaturated H 2 O–Na 2 SO 4 solutions led us to values of heat of hydration of anhydrous sodium sulfate into decahydrate. These values are in good agreement with values of the literature 13 , 14 which were obtained by a completely different method.

Solvay in North America Solvay CachedSolvay in North America. Within Canada, Mexico, and the United States, Solvay is present in a wide range of markets such as agriculture, automotive, aerospace, building, construction, consumer goods, healthcare, electrical, electronics resources, environment, and other industrial appli ions.

Isolation of Caffeine from Tea Leaves: Lab Experiment CachedMar 27, 2014 · Methylene chloride was added 2 more times to assure that all of the caffeine was reacted with. Sodium sulfate was added to the extraction to absorb any water that escaped from the tea and the remaining fluid was decanted and rinsed into a pre-weighed 50 mL beaker with boiling stones using an additional 2.0 mL of methylene chloride.

Enzyme Commission EC Number 5.3.1.5 Sigma-Aldrich CachedSearch results for 5.3.1.5 at Sigma-Aldrich. Compare Products: Select up to 4 products. *Please select more than one item to compare

Chemical Compatibility Guide - Graco Jul 02, 2013 · COMPATIBILITY CHEMICAL COMPATIBILITY Chemicial Compatibility Guide The following information is intended to be used as a general guideline for pump material selection.

Hydrates in Chemistry: Definition, Types, and Uses - Owl ion CachedSep 03, 2020 · The anhydrous form of the substance can absorb water, becoming hydrated. The water is known as the water of hydration or the water of crystallization. A common inorganic hydrate is sodium carbonate decahydrate washing soda . The first part of a hydrate& 39;s name—sodium carbonate in this example—is the name of the anhydrous compound.

Ferrous Sulfate: Uses, Dosage and Side Effects - Drugs.com CachedApr 15, 2021 · Ferrous sulfate can stain your teeth, but this effect is temporary. To prevent tooth staining, mix the liquid form of ferrous sulfate with water or fruit juice not with milk and drink the mixture through a straw.

Sodium Benzoate: Uses, Dangers, and Safety CachedJan 21, 2019 · Sodium benzoate is best known as a food preservative, though it has several other uses. This article provides a detailed overview of sodium benzoate, including its uses and possible safety concerns.

Solvay in North America Solvay CachedSolvay in North America. Within Canada, Mexico, and the United States, Solvay is present in a wide range of markets such as agriculture, automotive, aerospace, building, construction, consumer goods, healthcare, electrical, electronics resources, environment, and other industrial appli ions.

Hydrates in Chemistry: Definition, Types, and Uses - Owl ion CachedSep 03, 2020 · The anhydrous form of the substance can absorb water, becoming hydrated. The water is known as the water of hydration or the water of crystallization. A common inorganic hydrate is sodium carbonate decahydrate washing soda . The first part of a hydrate& 39;s name—sodium carbonate in this example—is the name of the anhydrous compound.

Methylene Chloride Dichloromethane - US EPA Methylene chloride is predominantly used as a solvent in paint strippers and removers; as a process solvent in the manufacture of drugs, pharmaceuticals, and film coatings; as a metal cleaning and finishing solvent in electronics manufacturing; and as an agent in urethane foam blowing. 1

Quora - A place to share knowledge and better understand the ... Quora is a place to gain and share knowledge. It& 39;s a platform to ask questions and connect with people who contribute unique insights and quality answers. This empowers people to learn from each other and to better understand the world.

Ferrous Sulfate: Uses, Dosage and Side Effects - Drugs.com CachedApr 15, 2021 · Ferrous sulfate can stain your teeth, but this effect is temporary. To prevent tooth staining, mix the liquid form of ferrous sulfate with water or fruit juice not with milk and drink the mixture through a straw.

PharmaCircle This website uses cookies to help provide you with the best possible online experience. Please read our Terms and Conditions and Privacy Policy for information about ...

Medical Devices, Patient Examination Glove, Revo ion of ... Final Rule No 1988-12-28 None 1989-01-03 Consistent with change 0693 Unknown

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