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Chemical compound
Selenium dioxide is the chemical compound with the formula SeO2. This colorless solid is one of the most frequently encountered compounds of selenium
Selenium_dioxide
Chemical reaction
The Riley oxidation is a selenium dioxide-mediated oxidation of methylene groups adjacent to carbonyls. It was first reported by Harry Lister Riley and
Riley_oxidation
Chemical element with atomic number 34 (Se)
arsenic. Selenium forms two oxides: selenium dioxide (SeO2) and selenium trioxide (SeO3). Selenium dioxide is formed by combustion of elemental selenium: Se
Selenium
Study of chemical compounds containing carbon-selenium bonds
organoselenium compounds, chemical compounds containing carbon-to-selenium chemical bonds. Selenium belongs with oxygen and sulfur to the group 16 elements or
Organoselenium_chemistry
Chemical compound
acids:[page needed] SeCl4 + 3 H2O → H2SeO3 + 4 HCl Upon treatment with selenium dioxide, it gives selenium oxychloride:[page needed] SeCl4 + SeO2 → 2SeOCl2 Lide, David
Selenium_tetrachloride
Chemical compound
pyramidal molecule. Selenium oxydichloride can be prepared by several methods, and a common one involves the conversion of selenium dioxide to dichloroselenious
Selenium_oxydichloride
Chemical compound
precursor to Se(VI) compounds. Selenium trioxide is difficult to prepare because it is unstable with respect to the dioxide: 2 SeO3 → 2 SeO2 + O2 It has
Selenium_trioxide
Chemical compounds containing selenium
forms two oxides: selenium dioxide (SeO2) and selenium trioxide (SeO3). Selenium dioxide is formed by the reaction of elemental selenium with oxygen: Se
Selenium_compounds
Process that partially protects steel against rust
are used to produce the oxide coating. "Cold" bluing is generally a selenium dioxide-based compound that colours steel black, or more often a very dark
Bluing_(steel)
Chemical compound
It also forms by the reaction of bromine trifluoride (BrF3) with selenium dioxide. The crude product can be purified by sublimation. The relative reactivity
Selenium_hexafluoride
Chemical compound
Tellurium dioxide (TeO2) is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite, β-TeO2, and
Tellurium_dioxide
Chemical compound
Selenium oxybromide (SeOBr2) is a selenium oxohalide chemical compound. Selenium oxybromide can be prepared through the reaction of selenium dioxide and
Selenium_oxybromide
Index of chemical compounds with the same name
Selenium oxide may refer to either of the following compounds: Selenium dioxide, SeO2 Selenium trioxide, SeO3 Diselenium pentoxide, Se2O5 This set index
Selenium_oxide
Chemical compound
providing the essential trace element selenium. Its preparation involves reacting sodium hydroxide with selenium dioxide. "Sodium hydrogen selenite". pubchem
Sodium_hydrogen_selenite
Chemical compound
is prepared by oxidising selenium compounds in lower oxidation states. One method involves the oxidation of selenium dioxide with hydrogen peroxide: SeO2
Selenic_acid
Chemical compound
Camphorquinone is produced by the Riley oxidation of camphor with selenium dioxide. Polymerization is induced very slowly by camphorquinone, so amines
Camphorquinone
Chemical compound
involving more easily handled reagents entails the fluorination of selenium dioxide with sulfur tetrafluoride: SF4 + SeO2 → SeF4 + SO2 An intermediate
Selenium_tetrafluoride
Medication and insecticide
yield m-phenoxytoluene. Second, oxidation of m-phenoxytoluene over selenium dioxide provides m-phenoxybenzaldehyde. Third, a Cannizzaro reaction of the
Permethrin
Chemical compound of sulfur and oxygen
Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula SO 2. It is
Sulfur_dioxide
Chemical compound
involved chlorination of elemental selenium. An improved method involves the reaction of a mixture of selenium, selenium dioxide, and hydrochloric acid: 3 Se
Selenium_monochloride
Heck reaction to 12 forms the dihydrofuran ring. Allylic oxidation by selenium dioxide provides allylic alcohol 13 with the correct stereochemistry. The aldehyde
Galantamine_total_synthesis
Chemical group (–CH2–CH=CH2)
available sesquiterpenoid: In the synthesis of some fine chemicals, selenium dioxide is used to convert alkenes to allylic alcohols: R2C=CR'-CHR"2 + [O]
Allyl_group
Transparent non-crystalline solid material
materials, e.g., sodium selenite may be preferred over easily evaporating selenium dioxide (SeO2). Also, more readily reacting raw materials may be preferred
Glass
Chemical compound produced in steel processing
through the metallurgical use of phosphoric acid or in conjunction with selenium dioxide can create a high contrast visual substrate onto which other compositional
Mill_scale
Use of ions to cause chemical changes
antimony pentafluoride. Gallium, Selenium and Indium are often implanted from solid sources such as selenium dioxide for selenium although it can also be implanted
Ion_implantation
Anion composed of selenium and oxygen
neutralizing solutions of selenous acid, which is generated by dissolving selenium dioxide in water. The process proceeds via the hydrogenselenite ion, HSeO−3
Selenite_(ion)
Organic compound (CH2=CHCH2OH)
general are prepared by allylic oxidation of allyl compounds, using selenium dioxide or organic peroxides. Other methods include carbon-carbon bond-forming
Allyl_alcohol
Chemical compound
reaction of selenium tetrafluoride with water or selenium dioxide. SeF4 + H2O → SeOF2 + 2 HF SeF4 + SeO2 → 2 SeOF2 The reaction of selenium dioxide and sulfur
Seleninyl_fluoride
H2SeO3 Selenium dibromide – SeBr2 Selenium dioxide – SeO2 Selenium disulfide – SeS2 Selenium hexafluoride – SeF6 Selenium hexasulfide – Se2S6 Selenium oxybromide
List_of_inorganic_compounds
Organic compound with a –C≡N functional group
tin–tungsten hydroxides as catalysts, or by addition of sulfuryl fluoride or selenium dioxide. Tosylmethylisocyanide (Van Leusen reagent) enables direct conversion
Nitrile
Chemical compound
purchased in cylinders. Elemental selenium can be recovered from H2Se through a reaction with aqueous sulfur dioxide (SO2). 2 H2Se + SO2 ⇌ 2 H2O + 2 Se
Hydrogen_selenide
Effect of chemical element
Selenium is an essential mineral micronutrient for animals, though it is toxic in large doses. In plants, it sometimes occurs in toxic amounts as forage
Selenium_in_biology
7783–79–1 SeOBr2 selenium oxybromide 7789–51–7 SeOCl2 selenium oxychloride 7791–23–3 SeO2 selenium dioxide 7446–08–4 SeO2F2 selenium dioxydifluoride 14984–81–7
List of CAS numbers by chemical compound
List_of_CAS_numbers_by_chemical_compound
Chemical compound
selenide and sulfur dioxide respectively. It is oxidized to copper(II) selenite by nitric acid. Copper selenides are the most common selenium minerals. CuSe
Copper(II)_selenide
British Chemist
where he undertook research into coke and coal. His 1932 work on selenium dioxide as a post-doctoral student at Imperial College earned him attention
Harry_Lister_Riley
Chemical compound
quaternized. It is used in the preparation of cyanine dyes. Oxidation with selenium dioxide gives the aldehyde 4-formylquinoline [wd]. Quinaldine, the isomer with
Lepidine
Toxic, waxy organic compound
representative transformations include sulfonation: oxidation with selenium dioxide to camphorquinone . Camphor can also be reduced to isoborneol using
Camphor
Chemical compound
organic solvents. It can be prepared by oxidation of cyclohexanone by selenium dioxide. The enol is about 1 kcal/mol more stable than the diketo form. Numerous
1,2-Cyclohexanedione
Group of chemical elements
oxygen family. Group 16 consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive elements polonium (Po) and livermorium
Chalcogen
Chemical compound
the most common water-soluble selenium compound. Sodium selenite usually is prepared by the reaction of selenium dioxide with sodium hydroxide: SeO2 +
Sodium_selenite
Chemical compound
starting with the selenium atom as number 1 following normal systematic nomenclature rules. Oxidized forms include selenophene 1,1-dioxide. Related ring structures
Selenophene
Chemical compound
to the corresponding nitrone using hydrogen peroxide, catalyzed by selenium dioxide. Tetrahydroisoquinoline derivatives may be formed in the body as metabolites
Tetrahydroisoquinoline
Industrial synthesis of chemical substance
"right". Camphorquinone is produced from camphor by reaction with selenium dioxide: see White, James D.; Wardrop, Duncan J.; Sundermann, Kurt F. (2002)
Vitamin_B12_total_synthesis
Disulfur dioxide, S2O2 Sulfur monoxide, SO Sulfur dioxide, SO2 Sulfur trioxide, SO3 Higher sulfur oxides, SOx where x > 3 Selenium dioxide, SeO2 Selenium trioxide
Interchalcogen
Decommissioned coal-fired power station in Pennsylvania, USA
Streams Law. The station exceeded its permitted effluent standards for selenium, total suspended solids, and biochemical oxygen demand in its wastewater
Homer_City_Generating_Station
Chemical compound
courtroom. 1,2-Indanedione is prepared by oxidation of 1-indanone with selenium dioxide. 1,3-Indandione Joullié, Madeleine M.; Currano, Judith; Hauze, Diane
1,2-Indandione
Name reaction in organic chemistry
chloride. An analogous reaction gives 1,2,3-selenadiazoles by using selenium dioxide instead of thionyl chloride. Hurd, Charles D.; Mori, Raymond I. (1995-10-01)
Hurd–Mori 1,2,3-thiadiazole synthesis
Hurd–Mori_1,2,3-thiadiazole_synthesis
Flat-topped skylights designed to be walked on
the supply of high-grade ore from Germany, so selenium dioxide was used as a decolorizer instead. Selenium also solarizes, but to a straw color. Replacement
Pavement_light
Chemical compound
readily isolated. Selenous acid is easily formed upon the addition of selenium dioxide to water. As a crystalline solid, the compound can be seen as pyramidal
Selenous_acid
American chemist
1021/ja01619a045. Issidorides, Costas H.; Fieser, Mary; Fieser, Louis F. (1960), "Selenium Dioxide Oxidation of Methyl Δ3-Cholenate", J. Am. Chem. Soc., 82 (8): 2002–5
Mary_Peters_Fieser
Chemical compound
(H2Se) and elemental selenium, and is therefore not stable. When an aluminum-reduced hydrochloric acid solution of selenium dioxide is reacted with lead
Hydrogen_diselenide
Chemical compound
This reduction can be conducted enantioselectively. Oxidation with selenium dioxide give the aldehyde 2-formylquinoline. Quinaldine has critical point
Quinaldine
Chemical compound
selenate can be obtained by reacting a mixture of lead(II,IV) oxide and selenium dioxide with hydrogen peroxide. Lead(II) selenate is poorly soluble in water
Lead(II)_selenate
Chemical element with metallic and nonmetallic properties
removal of carbon dioxide, as have selenous acid and tellurous acid. Selenium acts as a catalyst in some microorganisms. Tellurium, its dioxide, and its tetrachloride
Metalloid
Chemical compound
Alternatively, it can also be prepared by oxidation of acetophenone with selenium dioxide. "Phenylglyoxal". pubchem.ncbi.nlm.nih.gov. Retrieved 27 December 2021
Phenylglyoxal
Chemical compound
selenite, which on further heating decomposes into nickel(II) oxide and selenium dioxide. N i S e O 4 ⋅ 6 H 2 O → − H 2 O 100 ∘ C N i S e O 4 ⋅ 4 H 2 O
Nickel(II)_selenate
Chemical compound
aqueous solutions of selenium tetrabromide acidified with hydrogen bromide: SeBr4 + 2NH4Br → (NH4)2[SeBr6] Also, selenium dioxide dissolved in hydrobromic
Ammonium hexabromoselenate(IV)
Ammonium_hexabromoselenate(IV)
Chemical compound
2,3,4-Pentanetrione can be made by oxidizing 2,4-pentanedione with selenium dioxide. Ludwig Wolff made the 2,3 oxime by reacting hydroxylamine with
2,3,4-Pentanetrione
Chemical element with atomic number 52 (Te)
toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found
Tellurium
Chemical compound
stoichiometric amount of hydrogen peroxide (H 2O 2, 30% in 1-butanol), with selenium dioxide as catalyzer. The yield was 88%, with no trace of the 1,5/2,4 isomer
1,2,4,5-Cyclohexanetetrol
Chemical compound
glucic acid. Holker, J. R. (1955). "Oxidation of Some Enediols with Selenium Dioxide". J. Chem. Soc.: 579–580. doi:10.1039/JR9550000574. Honig, Pieter (2013-10-22)
Glucic_acid
System of detailed crystal structure classification
disulfide structure C46 AuTe2 Pma2 Krennerite structure C47 SeO2 P42/mbc Selenium dioxide structure C48 → C11b C49 ZrSi2 Cmcm C50 PdCl2 Pnnm α-Palladium(II)
Strukturbericht_designation
Chemical compound
been called melengestrol acetate [425-51-4] (2). Dehydrogenation with selenium dioxide gives 17-acetoxy-1,4,6-pregnatriene-3,20-dione [2668-75-9] (3). Reacting
Cyproterone_acetate
Chemical compound
synthesized by heating a mixture of turpentine, selenium dioxide, and hydrogen peroxide. The selenium dioxide acts as a catalyst while the hydrogen peroxide
Pinocarveol
Chemical compound
process has been well established with potassium permanganate and selenium dioxide. The diketone can be formed from the diester of picolinic acid groups
2,6-Diacetylpyridine
Chemical compound
available in India also. The oxidation of 2'-chloroacetophenone (1) with selenium dioxide gives o-chlorophenylglyoxal (2). Condensation with tert-butylamine
Tulobuterol
Chemical compound
and carcinogenicity of As2O3. The oxidation of malonic ester with selenium dioxide (SeO2) has an unsatisfactorily yield of ester hydrate of only 23%,
Diethyl_oxomalonate
Chemical synthesis
hydrochloric acid. Ring VII in intermediate 23 was closed by oxidation with selenium dioxide, a process accompanied by epimerization again at C14. Regarding the
Strychnine_total_synthesis
Chemical compound
derivatives. Two selected methods for the synthesis of tropone are by selenium dioxide oxidation of cycloheptatriene and indirectly from tropinone by a Hofmann
Tropone
Substance that an organism uses to live
while all other chemicals are inorganic. Inorganic nutrients include iron, selenium, and zinc, while organic nutrients include, protein, fats, sugars and vitamins
Nutrient
Chemical compound
including most transition metals and their compounds (e.g. manganese dioxide (MnO2), silver, and platinum). The redox properties of hydrogen peroxide
Hydrogen_peroxide
Combustible sedimentary rock composed primarily of carbon
is the largest source of carbon dioxide contributing to climate change. Over fifteen billion tonnes of carbon dioxide were emitted by burning coal in
Coal
Chemical compound
this manner will typically be labeled as containing selenous acid or selenium dioxide. It has also been investigated for use in the treatment of colon cancer
Copper(I)_selenide
Chemical compound
performed under harsh conditions or require hazardous reagents such as selenium dioxide (SeO2), gaseous hydrogen chloride (HCl), potassium permanganate (KMnO4)
Fusaric_acid
Material of moderate electrical conductivity
These include hydrogenated amorphous silicon and mixtures of arsenic, selenium, and tellurium in a variety of proportions. These compounds share with
Semiconductor
Chemical compound
oily liquid with a pungent odor. It is the selenium analogue of carbon disulfide (CS2) and carbon dioxide (CO2). This light-sensitive compound is insoluble
Carbon_diselenide
Chemical compound
is electrodeposition from a water solution of indium(I) sulfate and selenium dioxide. There are three polytopes or crystal forms. β, ε are hexagonal with
Indium(II)_selenide
Chemical compound
Sulfolene is formed by the cheletropic reaction between butadiene and sulfur dioxide. The reaction is typically conducted in an autoclave. Small amounts of
Sulfolene
Medical condition
Nitrogen dioxide poisoning is the illness resulting from the toxic effect of nitrogen dioxide (NO 2). It usually occurs after the inhalation of the gas
Nitrogen_dioxide_poisoning
Medical condition
Sulfuric acid Selenium Chlorine Fluoride Organic Phosphorus Pesticides Aluminium phosphide Organophosphates Nitrogen Cyanide Nicotine Nitrogen dioxide poisoning
Barbiturate_overdose
Chemical element with atomic number 53 (I)
of 2022, no neutral binary selenium iodide has been unambiguously identified at any temperature. Sulfur-iodine and selenium-iodine polyatomic cations (e
Iodine
Toxic effects of thallium
Sulfuric acid Selenium Chlorine Fluoride Organic Phosphorus Pesticides Aluminium phosphide Organophosphates Nitrogen Cyanide Nicotine Nitrogen dioxide poisoning
Thallium_poisoning
Chemical element with atomic number 90 (Th)
which tarnishes olive grey when it is exposed to air, forming thorium dioxide; it is moderately soft, malleable, and has a high melting point. Thorium
Thorium
Effect of long-term ergot poisoning
Sulfuric acid Selenium Chlorine Fluoride Organic Phosphorus Pesticides Aluminium phosphide Organophosphates Nitrogen Cyanide Nicotine Nitrogen dioxide poisoning
Ergotism
Nonlinear two-terminal fundamental circuit element
characteristics of titanium dioxide were originally described in the 1960s. The HP device is composed of a thin (50 nm) titanium dioxide film between two 5 nm
Memristor
Earth's most severe extinction event
eruptions that created the Siberian Traps, which released sulfur dioxide and carbon dioxide, resulting in euxinia (oxygen-starved, sulfurous oceans), elevated
Permian–Triassic extinction event
Permian–Triassic_extinction_event
Rain that is unusually acidic
animals, and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere
Acid_rain
Ocean/atmosphere carbon exchange process
(or pumps) that make up the marine carbon cycle bring atmospheric carbon dioxide (CO2) into the ocean interior and distribute it through the oceans. These
Oceanic_carbon_cycle
Chemical group (–CH3) derived from methane
benzoic acid. Ultimately oxidation of methyl groups gives protons and carbon dioxide, as seen in combustion. Demethylation (the transfer of the methyl group
Methyl_group
Substance that can explode
Pentazenium hexafluoroarsenate Peroxy acids Peroxymonosulfuric acid Selenium tetraazide Silicon tetraazide Silver azide Silver acetylide Silver fulminate
Explosive
Medical condition (poisoning)
Sulfuric acid Selenium Chlorine Fluoride Organic Phosphorus Pesticides Aluminium phosphide Organophosphates Nitrogen Cyanide Nicotine Nitrogen dioxide poisoning
Methanol_toxicity
hydroxide Hydrosulfide, a sulfur analog of hydroxide Hydroselenide, a selenium analog of hydroxide Azanide, a nitrogen analog of hydroxide Phosphanide
Alkali_hydroxide
Medical condition
Sulfuric acid Selenium Chlorine Fluoride Organic Phosphorus Pesticides Aluminium phosphide Organophosphates Nitrogen Cyanide Nicotine Nitrogen dioxide poisoning
Argyria
addition to manganese dioxide, other decolorizers have been historically used that undergo photo-oxidation. For example, selenium and cerium have both
Solarized_architectural_glass
Dose dependant harmfulness of substances
Examples include coal dust, asbestos fibres or finely divided silicon dioxide, all of which can ultimately be fatal if inhaled. Corrosive chemicals possess
Toxicity
Chemical element with atomic number 22 (Ti)
by the Kroll and Hunter processes. The most common compound, titanium dioxide (TiO2), is a popular photocatalyst and is used in the manufacture of white
Titanium
Unicellular algae responsible for the formation of chalk
Hamren-Larsson; O. F. X. Donard (2001). "Role of oceans as biogenic sources of selenium". Earth and Planetary Science Letters. 189 (3–4): 277–283. Bibcode:2001E&PSL
Gephyrocapsa_huxleyi
Study of the chemical elements and compounds necessary for normal plant life
food or animal feed is grown on selenium-deficient soils. The use of inorganic selenium fertilizers can increase selenium concentrations in edible crops
Plant_nutrition
Production methods of colored glass
nanometer-sized colloids (so-called striking glasses such as "gold ruby" or red "selenium ruby"), by colored inclusions (as in milk glass and smoked glass) by light
Glass coloring and color marking
Glass_coloring_and_color_marking
Organic compound
In the liver, it forms by the condensation of ammonia (NH3) and carbon dioxide (CO2) in the urea cycle. Urea is widely used in fertilizers as a source
Urea
SELENIUM DIOXIDE
SELENIUM DIOXIDE
SELENIUM DIOXIDE
SELENIUM DIOXIDE
Girl/Female
Tamil
Tholakshi | தோலாகà¯à®·à¯€
Goddess Parvati (Wife of Lord Shiva)
Boy/Male
Anglo Saxon
Wages war.
Surname or Lastname
English (Lancashire)
English (Lancashire) : variant of Hesketh.
Boy/Male
Hindu, Indian, Marathi
Mountain of Happiness
Surname or Lastname
English
English : patronymic from Dean 2.
Boy/Male
Sikh
Pure body/persona
Boy/Male
British, English, German
Peace
Male
Dutch
, Christian, i.e. follower of Christ.
Girl/Female
Biblical
Abundance, bearing fruit.
Boy/Male
American, British, English
From the Meadow on the Moor
SELENIUM DIOXIDE
SELENIUM DIOXIDE
SELENIUM DIOXIDE
SELENIUM DIOXIDE
SELENIUM DIOXIDE
a.
Containing, or impregnated with, selenium; as, seleniferous pyrites.
n.
A flat muscle of the back of the neck.
n.
An element that in combination produces amphid salt; -- applied by Berzelius to oxygen, sulphur, selenium, and tellurium.
n.
A nonmetallic element of the sulphur group, and analogous to sulphur in its compounds. It is found in small quantities with sulphur and some sulphur ores, and obtained in the free state as a dark reddish powder or crystalline mass, or as a dark metallic-looking substance. It exhibits under the action of light a remarkable variation in electric conductivity, and is used in certain electric apparatus. Symbol Se. Atomic weight 78.9.
a.
Of or pertaining to the splenial bone or splenius muscle.
n.
A selenide containing two atoms of selenium in each molecule.
n.
A binary compound of selenium, or a compound regarded as binary; as, ethyl selenide.
n.
A variety of gypsum, occuring in transparent crystals or crystalline masses.
n.
The thickened posterior border of the corpus callosum; -- so called in allusion to its shape.
a.
Of or pertaining to selenium; derived from, or containing, selenium; specifically, designating those compounds in which the element has a higher valence as contrasted with selenious compounds.
n.
A salt of selenious acid.
a.
Of, pertaining to, or containing, selenium; specifically, designating those compounds in which the element has a lower valence as contrasted with selenic compounds.
n.
A species of fern with fronds (Asplenium Ceterach).
n.
A selenide.
a.
Of or pertaining to selenite; resembling or containing selenite.
n.
A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.
n.
A hypothetical radical of selenium, analogous to sulphonium.
a.
Combined with selenium as in a selenide; as, seleniureted hydrogen.