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boiling ring

См. также в других словарях:

  • Boiling points (C) of saturated heterocycles and corresponding carbocycles — ▪ Table Boiling points (°C) of saturated heterocycles and corresponding carbocycles type of heteroatom ring size number (and position) of heteroatoms N (as NH) O S saturated cycloalkane 3 one   56   11   55 –33 4 one   63   48   94   13 5 one… …   Universalium

  • Prince Ring — Infobox Folk tale Folk Tale Name = Prince Ring Image Caption = AKA = Aarne Thompson Grouping = Mythology = Country = Iceland Region = Origin Date = Published In = The Yellow Fairy Book Related = Prince Ring is an Icelandic fairy tale. Andrew Lang …   Wikipedia

  • Horrors of the Black Ring — infobox Book | | name = Horrors of the Black Ring orig title = translator = author = R. L. Stine cover artist = Tim Jacobus country = United States language = English series = classification = fiction genre = Horror fiction, Children s literature …   Wikipedia

  • Melting (in bold) and boiling points (C) of heteroaromatic compounds — ▪ Table Melting and boiling points* of heteroaromatic compounds substituent ring system (with position of substituent) H CH3 C2H5 CO2H CO2C2H5 CONH2 NH2 OH OCH3 Cl Br benzene   80 111 136 122 212 129 184   41 154 132 156 pyridine (2) 115 129 148… …   Universalium

  • heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… …   Universalium

  • hydrocarbon — hydrocarbonaceous, adj. /huy dreuh kahr beuhn, huy dreuh kahr /, n. any of a class of compounds containing only hydrogen and carbon, as an alkane, methane, CH4, an alkene, ethylene, C2H4, an alkyne, acetylene, C2H2, or an aromatic compound,… …   Universalium

  • carboxylic acid — Chem. any organic acid containing one or more carboxyl groups. [1900 05; CARBOXYL + IC] * * * Any organic compound with the general chemical formula ―COOH in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond to make a… …   Universalium

  • petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

  • organohalogen compound — Introduction  any of a class of organic compounds (organic compound) that contain at least one halogen (halogen element) ( fluorine [F], chlorine [Cl], bromine [Br], or iodine [I]) bonded to carbon. They are subdivided into alkyl, vinylic, aryl,… …   Universalium

  • Laboratory glassware — Three beakers, a conical flask, a graduated cylinder and a volumetric flask …   Wikipedia

  • separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

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