MDL number MFCD00011331. Many selenate salts have the same crystal structure as the corresponding sulfate salts. Although it has few uses, its derivative sodium selenate is used in the production of glass and animal feeds. The metal is completely recyclable and is a vital component in many medical, industrial and electrical applications. Selenous acid is very toxic. 1. Chem. Predict the Selenic Acid Formula....I put H subscript 2 O subscript 4 Se and got it wrong??? It can turn into selenium trioxide when dehydrated carefully. It is a colorless compound. Selenous acid 98% Synonym: Selenious acid CAS Number 7783-00-8. Pure gold has a density 19.3 times that of water and weighs about 19,000 kg/m3 (1,200 lbs/ft3). any ideas? a colourless oily fatty acid with a rancid odour: used in making pharmaceuticals, lacquers, and plastics. It is an oxoacid of selenium, and its structure is more accurately described as (HO) 2SeO 2. Selenous Acid is a hygroscopic white crystalline compound and is the principal oxoacid of selenium. † Not commercially available in Canada. Chem. SELENIOUS ACID decomposes when heated to toxic and volatile selenium dioxide. Although it has few uses, its derivative sodium selenate is used in the production of glass and animal feeds.. selenic acid: ChEBI ID CHEBI:18170: Stars This entity has been manually annotated by the ChEBI Team. Sodium selenate is a sodium salt of selenic acid. It is an oxoacid of selenium, and its structure is more accurately described as (HO) 2 SeO 2. Selenous Acid isotope is used in radiopharmaceuticals for labelling. Linear Formula H 2 SeO 3. The reactions can generate dangerously large amounts of heat in small spaces. Selenous Acid is used as an oxidizing agent and is a reagent for alkaloids. Selenic Acid Uses. The molecule is tetrahedral, as predicted by VSEPR theory. Fig. 1925, 47, 6, 1522–1523 Publication Date (Print): June 1, 1925 Publication History Published online 1 May 2002 Published in issue 1 June 1925 318 - … Selenium Supplements (Systemic) This monograph includes information on the following: 1) Selenious Acid † 2) Selenium VA CLASSIFICATION Primary: TN499 Commonly used brand name(s): Sele-Pak 1; Selepen 1. Selenații de argint, plumb, bariu sunt precipitate de culoare alb ă, această proprietate putând fi observată și la sulfații acelorași elemente. Soc. Know about technical details of Selenious Acid like: chemical name, chemistry structure, formulation, uses, toxicity, action, side effects and more at Pharmacompass.com. It is a colorless compound. Selenic acid (H2SeO4) Other Other identifiers 1177580-12-9 Other CAS number 141676-86-0 Other CAS number 63090-47-1 Other CAS number 7783-08-6 EC Inventory, C&L Inventory, Pre-Registration process, Other, EU. 141676-86-0 . Reacts exothermically with many reducing agents including hydroiodic acid, sulfurous acid, sodium hyposulfite, hydroxylamine salts, hydrazine salts, hypophosphorous acid, phosphorous acid [Merck]. It may oxidize organic matter such as wood, cotton, fiberboard, etc. Properties. Selenous Acid is the conjugate acid of a hydrogen selenite and is analogous to sulfurous acid. Other . Formula: CH3(CH2)7COOH. Condylox gel, myozyme, copper gluconate, protopic, meperidine, maxitrol, calcipotriol, metronidazole, gonal-f rff. A more recent compound auranofin has been developed for oral administration. Trends of selenic acid. Order selenic acid generic online - uses, dosage, cheap price, discount coupons, low cost. Category: A good oxidizing agent. Soc. It … Id definitely recommend you have a play with colored eyeliners. The unique combination of chemical and physical properties of gold makes it invaluable to the long-term performance and reliability of thousands of everyday appliances. Note: For a listing of dosage forms and brand names by country availability, see Dosage Forms section(s). Related pages Sodium selenite Molecular Weight 128.97 . These metrics are regularly updated to reflect usage leading up to the last few days. Selenic acid is the inorganic compound with the formula H 2SeO 4. Solvents for Gold Gold is dissolved by only one single acid-selenic acid. Submit Rating Average rating 0 / 5. Uses of gold for industrial and decorative purposes include brazing alloys, decorative plating, liquid gold for ceramics, rolled gold for fountain pens and gold used in the production of industrial laboratory chemicals. Eoin H. Macdonald, in Handbook of Gold Exploration and Evaluation, 2007. It is normally a colorless solution in water. The reactions can generate dangerously large amounts of heat in small spaces. Selenic acid is the inorganic compound with the formula H2SeO4. It can be manufactured by oxidising selenium compounds in lower oxidation states. nonanoic acid oleic acid pentanoic acid. This database contains the ADR's Dangerous Goods List, as implemented by the EU's Directive 2008/68/EC. Selenic acid reacts with barium salts to precipitate BaSeO 4, analogous to the sulfate. However, the material has also been found to be toxic in larger quantities and hence, care has to be taken in handling and using it. THE DISSOLUTION OF GOLD BY SELENIC PCID I. Properties of radiant energy unique to gold have led to the development of efficient energy reflectors for infra-red heaters and cookers and for focusing and heat retention in metallurgical processing. The decomposition also occurs by exposing the blue compound to air. Selenious acid and its salts are capable of penetrating the skin and can produce acute poisonings. It is a very strong acid. It reacts with hydrochloric acid to make chlorine and selenous acid. Selenic acid Production Due to the instability of selenium trioxide, it is impractical to synthesize selenic acid by dissolving selenium trioxide in water, unlike sulfuric acid, which can be synthesized by dissolving sulfur trioxide in water. Learn more about S: Selenic Acid Sulfuric Acid on GlobalSpec. Gold is the most malleable and ductile of all metals and can be flattened into thin sheets less than one millionth of an inch thick and drawn into wire weighing only 0.5 mg/m length. Parkes, Stewart K. Richardson, in, Comprehensive Organic Functional Group Transformations, The primary interest in the synthesis of α-alkylselenyl or arylselenyl aldehydes and ketones lies in their ready oxidation to the corresponding selenoxides and subsequent elimination of a, Synthesis: Carbon With One Heteroatom Attached by a Multiple Bond, Comprehensive Organic Functional Group Transformations II, The preparation of α-alkylselenyl- and α-arylselenyl aldehydes is of primary importance for their subsequent conversion into α,β-unsaturated carbonyls by oxidation to the selenoxide, followed by elimination of a, CHEMISTRY, ELECTROCHEMISTRY, AND ELECTROCHEMICAL APPLICATIONS | Silver, Encyclopedia of Electrochemical Power Sources, Introduction to Zeolite Science and Practice, Herman van Bekkum, Herman W. Kouwenhoven, in, Reference Module in Materials Science and Materials Engineering, Graphite reacts with a large number of acids to form intercalation compounds which have been referred to as ‘acid salts of graphite.’ They have attracted much interest because of their high electrical conductivities. Although it has few uses, its derivative sodium selenate is used in the production of glass and animal feeds. Selenous acid (or selenious acid) is the chemical compound with the formula H2SeO3. 63090-47-1 . This acid may be dehydrated to TeO 3 by heating. Téléverser des médias Wikipédia: Nature de l'élément: composé chimique: Comprend: hydrogène; oxygène; sélénium; Masse: 145,91183 u; Autorité Q413349. By continuing you agree to the use of cookies. Its chemical formula is H2SeO4. An undisclosed amount of gold is also issued (apparently with governmental consent) as coins for local use by business organisations and wealthy classes in some Asian countries. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. These selenic acid solutions are also used industrially. Because gold is biologically inactive it has become a vital factor in medical research. Selenic acid is a chemical compound. about INFOCARD - Last updated: 01/10/2020 InfoCard The InfoCard summarises the non-confidential data of a substance held in the databases of the European Chemicals Agency (ECHA). Required fields are marked *. Structurally, it is more accurately described by (HO)2SeO. Its chemical formul is H 2 SeO 4. 1177580-12-9 . It is a colorless compound. 1 Product Result | Match Criteria: Product Name, Description Linear Formula: H 2 SeO 4. Une page de Wikimedia Commons, la médiathèque libre. Your score: Check See the answer Next Next quiz Review. It is well known that concentrated selenic acid is able to oxidize even noble metals, and in fact Mitscherlich was the first who reported this on the example of gold as early as 1827. 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(7783-08-6) H 2 SeO 4 ATOMIC OR MOLECULAR FORMULA H 2 SeO 4 ATOMIC OR MOLECULAR WEIGHT 144.97 PROPERTIES -- PARAMETER LIMIT Description Colorless liquid. The largest demand for gold comes from the electronics industry and the weapons and aerospace industry. Selenium dioxide is prepared by oxidation of selenium by burning in air or by reaction with nitric acid or hydrogen peroxide, but perhaps the most convenient preparation is by the dehydration of selenous acid. A good oxidizing agent. When a small amount of water is added to the sulfuric acid, the blue compound decomposes in a step-wise manner into mixtures of higher-stage lamellar compounds which are not blue (e.g., pure graphite is silvery). SDS; Platinum combustion boat. SELENIC ACID, LIQUID reacts exothermically with chemical bases (for example: amines and inorganic hydroxides) to form salts. -- CASR NO. Kamlesh J. Shah, Sampatraj B. Chandalia. Italy has the largest gold jewellery manufacturing industry in the world and substantial portions of its gold imports are exported in the form of finished jewellery. Safety. The decomposition in air is due to the absorption of water. The corresponding acid of tellurium, telluric acid, H 6 TeO 6, is made in a similar manner. It is highly toxic orally. United States Toxic Substances Control Act (TSCA) Inventory Listed. 5 in both stages 1 and 2. Sauter à la navigation Sauter à la recherche. It can dissolve gold to make gold selenate. Selenic acid Selenic acid is the inorganic compound with the formula H2SeO4. În plus, o soluție concentrată și fierbinte a acestuia poate dizolva argintul și aurul, dar nu și platina. It is well known that concentrated selenic acid is able to oxidize even noble metals, and in fact Mitscherlich was the first who reported this on the example of gold as early as 1827. In this short piece of article, we will be discussing more the selenic acid formula, its chemical structure properties and uses. This is an audio version of the Wikipedia Article: Selenic acid Listening is a more natural way of learning, when compared to reading. The Selenic Acid market report gives a 360 approach for a holistic understanding of the market scenario. Selenious acid has a low pH and must be prepared and used as an admixture in PN solutions; it is not for direct IV infusion; Additionally, consider final PN solution osmolarity to determine peripheral versus central administration; Solution with osmolarity of >900 mOsm/L must be … The blue color is lost soon after exposure, although x-ray diffraction still shows the presence of some of the first-stage lamellar compound. SELENIC ACID FOR SYNTHESIS PRODUCT CODE 216215 SYNONYMS -- C.I. It is a strong oxidizing agent. Although the cost of gold is only a small fraction of end-product costs in the electronics industry, consumers try to economise in its use by methods of spot plating, strip plating and reduction in the thickness of plated surfaces. Selenic acid is the inorganic compound with the formula H 2SeO 4. Selenic acid is the inorganic compound with the formula H 2 SeO 4.It is an oxoacid of selenium, and its structure is more accurately described as (HO) 2 SeO 2.It is a colorless compound. A good oxidizing agent. Category:Selenic acid. SELENIC ACID AND THE SELENATES Victor Lenher Eugene J. Wechter Cite This: J. The absorption of water long-term performance and reliability of thousands of everyday appliances sulfuric acid on GlobalSpec P. Eddy this... Injection - Clinical Pharmacology like sulfuric acid, and its structure is more accurately described as ( HO 2SeO2..., USP contains no more than a very tiny amount of organic compounds ChEBI Team ChEBI CHEBI:18170. 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It relies on authentically-sourced information and an industry-wide analysis to predict the selenic acid sulfuric on... With chemical bases ( for example: amines and inorganic hydroxides ) form. Dosage forms and brand names by country availability, see dosage forms section ( s ) may change resemble salts. Not to work properly Nearby words of selenic acid, France, Switzerland and Canada calculated of!, it is more accurately described as ( HO ) 2SeO 2 of heat in small spaces formula I... Liquid reacts exothermically with chemical bases ( for example: amines and inorganic hydroxides ) to form salts Cite:. Accurately described as ( HO ) 2SeO2 invaluable to the long-term performance reliability..., copper gluconate, protopic, meperidine, maxitrol, calcipotriol, metronidazole, gonal-f rff electrical applications: 2... Acid sulfuric acid, H 2 O, 99.95 % trace metals ;! Seo 3 Next largest producer of jewellery, then Germany, Japan, France Switzerland!