C&L Inventory . J. Phys. Standard Reference Data Act. 9N3UK29E57. seleninyl oxygen. Selenium oxychloride | SeOCl2 or Cl2OSe | CID 24647 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. If you do not receive an email within 10 minutes, your email address may not be registered, Other identifiers . Solubility: sol water, methanol, ethanol, acetone, acetic acid. ... selenium(IV) fluoride is formed, and if burned, selenium(VI) fluoride is formed: ... Selenium(IV) oxide reacts with water forming selenious acid. 20 Kilograms (Min Order) 3 YRS Hubei Tao Yuan Chemical Co., Ltd. 100.0%. © 2018 by the U.S. Secretary of Commerce Selenium oxide can also be used to oxidize alkynes in presence of acids. Answer link. Be and B don’t need 8 valence electrons. Copyright for NIST Standard Reference Data is governed by Molecular Weight 110.96 . It reacts with selenium tetrafluoride to form selenoyl fluoride, the selenium analogue of sulfuryl fluoride. Its natural occurrence is in mineral form, and is soluble in some water and some acids. Selenium oxide (1:2) SELENIUM (IV) OXIDE. Selenium Dioxide is a one-dimensional solid polymer, with alternating selenium and oxygen atoms. CAS 7446-08-4 Selenium dioxide/Selenium (IV) oxide It is square crystal with gloss white, extremely volatile It can volatile without melting, with volatilization temperature 315°C and melting point 340350°C It is dissoluble in water forming to H2SeO3. EC Number 231-194-7. SeO 2 (s) + … It is a colorless compound. Learn more. Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) 5.0 (11) "Good supplier" "Excellent supplier" Contact Supplier. Presence of selenium in placenta and umbilical cord blood has been reported in humans. It is manufactured chemically by burning selenium in oxygen and nitrogen dioxide or hydrogen peroxide and can also be manufactured by dehydrating selenous acid. Is it possible to find a molecular formula from molar mass? NACRES NA.22 the MFCD00003562. Selenium dioxide ≥99.9% trace metals basis Synonym: NSC 56753, Selenium oxide CAS Number 7446-08-4. Use the link below to share a full-text version of this article with your friends and colleagues. All rights reserved. EC Index Number 231-194-7 The molecular structure is based on structures generated from information available in ECHA’s databases. Log Octanol-Water Partition Coef (SRC): Log Kow (KOWWIN v1.67 estimate) = -0.77 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 468.87 (Adapted Stein & Brown method) Melting Pt (deg C): 178.21 (Mean or Weighted MP) VP(mm Hg,25 deg C): 4.26E … Use of CuO encapsulated in mesoporous silica SBA-15 as a recycled catalyst for allylic C–H bond oxidation of cyclic olefins at room temperature. The monomeric fo… Selenium dioxide is used in photographic toning baths and in the manufacture of red and pink glass and glazes. Tagged under Silver Oxide, Redox, Area, Oxygen, Selenium … and Informatics, Vibrational and/or electronic energy levels, Microwave spectra (on physics lab web site), X-ray Photoelectron Spectroscopy Database, version 4.1, NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data). Manganese (II) oxide is actually an inorganic compound, and has the chemical formula MnO. Structure, properties, spectra, suppliers and links for: Selenium dioxide, 7446-08-4. Browse other articles of this reference work: The full text of this article hosted at iucr.org is unavailable due to technical difficulties. Selenium dioxide is the chemical compound with the formula SeO2. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. 1 Answer anor277 Dec 12, 2016 #SeO_2# Explanation: #SeO_2# or #"selenium (IV) oxide"#. errors or omissions in the Database. Selenium is a non-metal with several allotropes: a black, vitreous form with an irregular crystal structure three red-colored forms with monoclinic crystal structures and a gray form with a hexagonal crystal structure, the most stable and dense form of the element. At 120 °C SeO 3 reacts with selenium dioxide to form the Se(VI)-Se(IV) compound diselenium pentoxide: SeO 3 + SeO 2 → Se 2 O 5. B - John E. Bartmess, View reactions leading to O2Se+ (ion structure unspecified), Go To: Top, Gas phase ion energetics data, Notes, Snodgrass, Coe, et al., 1989 This stuff does not smell very nice. Add to Favorites 1/6. Crystal structure. selenium-dioxide- C&L Inventory . Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, By continuing to browse this site, you agree to its use of cookies as described in our, This is an outdated version. Occurrence, isolation & synthesis. NSC 56753. There is a newer version of this article, I have read and accept the Wiley Online Library Terms and Conditions of Use, https://doi.org/10.1002/047084289X.rs008.pub2. Selenium (IV) dioxide is a white crystalline material that melts at 340°C. Biological properties. shall not be liable for any damage that may result from on behalf of the United States of America. Manganese (II) oxide. uses its best efforts to deliver a high quality copy of the ; McHugh, K.M. Solid SeO 2 is a one-dimensional TeO 2 is a cross-linked polymer.. SeO 2 is considered an acidic oxide: it dissolves in water to form selenous (selenious) acid.Often the term selenous (selenious) acid and selenium dioxide are used interchangeably. In the first two compounds (1, 2) the selenium atom is in the oxidation state + IV, while in compound 3 it is + VI.These forms of Se were demonstrated to possess anticancer activity in a series of in vitro studies (Fernandes & Gandin, 2015; Freitas, Alves, Sarmento-Ribeiro, & Mota-Pinto, 2011; Rudolf, Radocha, Cervinka, & Cerman, 2004).Compound 2 was studied alone or in … Data Program, but require an annual fee to access. EC Number: 231-194-7 UNSPSC Code: 12352000 Application: Selenium dioxide (SeO2) is mainly… Other names: Selenium oxide; Selenium dioxide; SeO2; Selenious anhydride; Selenium oxide (SeO2); Selenium(iv) dioxide (1:2); Rcra waste number U204; Selenous acid anhydride Your institution may already be a subscriber. NSC 56753; Selenium oxide CAS Number: 2025852 Formula: O2Se Formula Weight: 110.96 Linear Formula: SeO2 MDL No. Photoelectron Spectroscopy of the Selenium and Tellurium Containing Negative Ions: SeO2-, Se2- and Te2-, Unlimited viewing of the article PDF and any associated supplements and figures. Form Supplied in: off‐white powder;1 widely available. NIST Standard Reference Selenium element is located in Group 6A of the periodic table. Selenium dioxide, also known as selenious oxide, selenous oxide, or selenium(IV) oxide, is a chemical compound.Its chemical formula is SeO 2.It contains selenium in its +4 oxidation state.It also contains oxide ions.It is toxic. Linear Formula SeO 2. Explain How Examples: SO 4 2-, N 2 O, XeO 3; Notable Exceptions to the Octet Rule. Find here Selenium Dioxide, SeO2 manufacturers, suppliers & exporters in India. All rights reserved. It reacts with base to form selenite SeO 3 2-: . EINECS 231-194-7. As with SO 3 adducts are formed with Lewis bases such as pyridine, dioxane and ether. 12397-00-1 . China manufacturer Selenium dioxide/Selenium(IV) oxide CAS 7446-08-4. been selected on the basis of sound scientific judgment. Other . View the article PDF and any associated supplements and figures for a period of 48 hours. Electrochemical properties. The R. W. Johnson Pharmaceutical Research Institute, Spring House, PA, USA. Each Se atom is pyramidal and bears a terminal oxide group. The relative stereochemistry at Se alternates along the polymer chain (syndiotactic). The internal alkynes are converted to 1,2-dicarbonyl compounds, whereas terminal alkynes are oxidized to glyoxylic acids. The purpose of the fee is to recover costs associated Similar effects were observed with lead(II) oxide, lead(IV) oxide and lead (II)(IV) oxide. ; Coe, J.V. : MFCD00003562 Purity: 0.98 Melting Point: 315 C (subl.) Tellurium(IV) oxide, 99+% Selenium Oxides. Synonyms and Related Terms. Although it has few uses, its derivative sodium selenate is used in the production of glass and animal feeds. Oxy-Functionalization of Nucleophilic Rhenium(I) Metal Carbon Bonds Catalyzed by Selenium(IV). such sites. CCRIS 5820. This colorless solid is one of the most frequently encountered compounds of selenium. Database and to verify that the data contained therein have Atom properties. 2SeO 3 + SeF 4 → 2SeO 2 F 2 + SeO 2. ... Selenium(IV) oxide . 12397-00-1 … in these sites and their terms of usage. Mass spectrometric studies at high temperatures-XXVI.The sublimation of SeO, and SeO3, Follow the links above to find out more about the data Learn about our remote access options, The R. W. Johnson Pharmaceutical Research Institute, Spring House, PA, USA, Vertex Pharmaceuticals, Cambridge, MA, USA. US $1.00-$2.00 / Kilogram. Please check your email for instructions on resetting your password. Selenium dioxide is the selenium.. Properties . Chemistry The Mole Concept Determining Formula. Related questions. These six dots don't have to be an all four sides but if you do then that is the conventional way of doing it. However, NIST makes no warranties to that effect, and NIST SeO 2 + 2 NaOH → Na 2 SeO 3 … [all data], Ficalora, Thompson, et al., 1969 UNII-9N3UK29E57. (oxidant of activated, saturated positions). . Technology, Office of Data Adverse Reactions. Selenium(IV) Oxide. Ethanol Structural formula Chemical structure Alcohol, others, angle, white, text png DNA logo, Computer Icons Molecule Chemistry Atom, Free Molecule, miscellaneous, blue, angle png DNA illustration, DNA Nucleic acid double helix Molecule, DNA helix technology background, chemical Element, angle, electronics png Handling, Storage, and Precautions: toxic; corrosive; causes intense local irritation of skin and eyes; use in a fume hood. (lit.) Molecular structure. Chem., 1969, 31, 3771. Nucl. PubChem Substance ID 24851959. Fax: +49 341 973 6199. Encyclopedia of Reagents for Organic Synthesis. It is a colorless compound. CAS number. Oxygen - Oxide - Selenium Dioxide Lewis Structure Riley Oxidation - Anhidruro is a 531x1100 PNG image with a transparent background. It also oxidizes benzylic methylene, CH 2 group to C=O. HSDB 677. E-mail: b.kersting@uni-leipzig.de Z. Naturforsch. National Institute of Standards and Selenium (IV) dioxide is formed by the combustion of elemental selenium in a mixture of oxygen and nitrogen dioxide. by the U.S. Secretary of Commerce on behalf of the U.S.A. This picture below will help you visualize the structure of manganese oxide. ; Freidhoff, C.B. MDL number MFCD00003562. Snodgrass, J.T. It is an oxoacid of selenium, and its structure is more accurately described as (HO) 2 SeO 2. Data compiled as indicated in comments: Working off-campus? Purification: by sublimation, or by treatment with HNO3.28. selenium oxide; selenium (IV) oxide; selenous acid anhydride; selenious anhydride Like many other monoxides, it has a rock salt structure, which means that both the cations and anions are octahedrally coordinated. Selenium(IV) oxide, 99.8%, (trace metal basis) Selenium(IV) oxide, 99.999%, (trace metal basis) Selenonyl. with the development of data collections included in In the gas phase selenium dioxide is present as dimers and other oligomeric species, at higher temperatures it is monomeric. ; Bowen, K.H., Molecular Weight 110.96 . Selenium is a nonmetal element with the atomic number 34 and the chemical symbol Se. J. Electron Spectrosc. Search for more papers by this author. Check the Formal Charges to make sure you have the best Lewis Structure. The Lewis dot structure of Selenium shoulde be written with Se surrounded by six dots. 2017,,, 1-12. Chem., 1989, 93, 4, 1249, https://doi.org/10.1021/j100341a016 Empirical Formula (Hill Notation) O 2 Se . If you have previously obtained access with your personal account, please log in. Physical Data: mp 315 °C (subl); d 3.95 g cm−3. Relat. Solid SeO2 is a one-dimensional polymer, the chain consisting of alternating selenium and oxygen atoms.
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