Sulfur Subject index

The Atmosphere. - The Hydrosphere. - Chemical Oceanography. - Chemical Aspects of Soil. - The Oxygen Cycle. - The Sulfur Cycle. - The Phosphorus Cycle. - Metal Cycles and Biological Methyla-tion. - Natural Organohalogen Compounds. -Subject Index. 

Sulfur-Nitrogen-Fluorine Compounds O. Glemser and R. Mews AUTHOH INDEX—SUBJECT INDEX... 

This review covers nearly the complete literature on fluorine-containing compounds of sulfur up through 1956. That is the last year for which a subject index for Chemical Abstracts or Chemisches Zentralblatt was available. Articles appearing through 1958 are also included when known to the reviewer. In the case of carbon compounds the review deals with the first member of an homologous series, for example... 

Contents Background and Technical Aspects of the Chemical Industry. - Air Quality and Emission Control. - Water Quality Emission Control. - Natural and Derived Sodium and Potassium Salts. - Industrial Bases by Chemical Routes. - Electrolytic Sodium Hydrocide and Chlorine and Related Commodities. -Sulfur and Sulfuric Add. - Phosphorus and Phosphoric Acid. - Ammonia, Nitric Add and their Derivatives. - Aluminium and Compounds. - Ore Enrichment and Smelting of Copper. - Production of Iron Steel. - Production of Pulp and Paper. - Fermentation Processes. - Petroleum Production and Transport. - Petroleum Refining. - Formulae and Conversion Factors. - Subject Index. 

Physical properties of the solvent are used to describe polarity scales. These include both bulk properties, such as dielectric constant (relative permittivity), refractive index, latent heat of fusion, and vaporization, and molecular properties, such as dipole moment. A second set of polarity assessments has used measures of the chemical interactions between solvents and convenient reference solutes (see table 3.2). Polarity is a subjective phenomenon. (To a synthetic organic chemist, dichloromethane may be a polar solvent, whereas to an inorganic chemist, who is used to water, liquid ammonia, and concentrated sulfuric acid, dichloromethane has low polarity.)... 

In concentrated sulfuric acid, aromatic polyisocyanides are subject to sulfona-tion. Poly(isopropyl isocyanide) is dissolved in 97%H2S04, and is reprecipitated by the addition of water. Infrared spectra show that some structural change, e.g. hydrolysis, has taken place (26). Poly(sec-butyl isocyanide) is dissolved by the acidic hexafluoroisopropanol with some attendant browning of the solution (7). In spite of the theoretical complexities of polyelectrolytic character introduced into the solution characterization of polyisocyanides in strongly acidic media, such media at least allow viscometric indexing of the various samples of the otherwise insoluble polyisocyanides. 

When the reduction is completed, the flask is connected with a condenser and the mixture subjected to distillation. The boiling point of constant boiling hydrobromic acid is 125-126° at 760 mm., but it must be remembered that in distilling the product from the sulfuric acid mixture, the thermometer reading should not be relied upon as an index to the composition of the distillate. Towards the end of the distillation the thermometer may rise to 130° and above, when water with only traces of acid distils from the sulfuric acid residue. Upon redistillation of the product the thermometer reading may be relied upon. For many uses a product free from traces of... 

Venus is completely covered with dense clouds. The composition of the clouds has been the subject of much speculation for many years. It includes ice, carbon suboxide, sulfuric acid, hydrocarbons, mercuric chloride, ammonium chloride, and hydrated ferrous chloride. Recently, Young (1066a) has proposed, based on refractive index measurement, that the clouds are composed most probably of droplets of 75% H2S04. 

Monier-Williams, G, W. 1927. Determination of sulfur dioxide in foods. Repts. Public Health and Med. Subjects No. 43,1-56, Great Britain Ministry of Health, London. Moreau, L., and Vinet, E. 1937a. Determination of the real antiseptic power of sulfurous acid in musts and wines by the method of the iodine index. Compt. rend. 

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