Chemical German

The database is produced by the German Chemical Society (GDCh) and provided by MDL Information Systems Inc. [22]. 

TnJluoromethjl)aniline, P> JA. Substance Keport44 (Sept. 1989), Advisory Board for Environmental Relevant Waste of the German Chemical Society, VCH Pubhshers, Weinheim, Germany, 1990, 58 pp. 

In 1875, a paper by Winkler awakened interest in the contact process, first patented in 1831. Winkler claimed that successfiil conversion of SO2 to SO could only be achieved with stoichiometric, undiluted ratios of SO2 and O2. Although erroneous, this beUef was widely accepted for more than 20 years and was employed by a number of firms. Meanwhile, other German firms expended a tremendous amount of time and money on research. This culminated in 1901 with Knietsch s lecture before the German Chemical Society (3) revealing some of the investigations carried out by the Badische Anilin-iind-Soda-Fahrik. This revealed the abandonment of Winkler s theory and further described principles necessary for successfiil appHcation of the contact process. 

Although first prepared about 1930 by scientists at the German chemical company of IG Farben the early products showed no properties meriting production on technical grounds. However, towards the end of the 1930s commercial production of the copolymer commenced in Germany as Buna S. (The term Buna arose from the fact that the early polymers of butadiene were made by sodium (Na) catalysed... 

PloB, R., Tengler, T. and Mersmann, A., 1986. Scale-up of MSMPR-Crystallizers. German Chemical Engineering, 1, 42-48. 

The Introduction furnishes hints for using the book and devotes special attention to the pecuharities of German chemical nomenclature. 

Wittig reactions are used commercially in tire synthesis of numerous pharmaceutical agents. For example, the German chemical company BASF prepares vitamin A by Wittig reaction between a 15-carbon ylide and a 5-carbon aldehyde. 

Fundamental research in pyrotechnics is published in the US in Combustion and Flame by the Combustion Institute, and in the UK in Combustion Science and Technology and in Fuel . Germany has the new, journal, Propellants and Explosives (German Chemical Society), which is the successor to the discontinued Explosivstoffe . A necessary caveat is that these journals are strongly oriented toward combustion or propulsion so that only rarely do they yield pyrotechnic information. Likewise, the various publications of the learned societies contain much data on thermodynamics, spectroscopy, and instrumental analysis which are useful in the study of pyrotechnics. In the USSR the situation is somewhat better as Physics of Combustion and Explosion (Fizika Gorenia i Vzryva) of the Siberian Branch Academy of Sciences USSR is exclusively oriented toward subjects of interest, as several scientific institutes are primarily devoted to research in pyrotechnics. The same authors do publish also, however, in the journals of the Academy of Science USSR (of which there are several) as well as in the corresponding journals of the academies of the various republics, so that the impression is created of a high level of activity... 

In the modified OECD Screening Test (OECD 301E), which indicates complete degradation or elimination according to the German Chemical Substances Control Act, alkanesulfonates are biodegradable to 95% (decrease in DOC, the dissolved organic carbon). 

This serendipitous discovery marked the beginning of the synthetic dyestuffs industry, based on coal tar as its main raw material, which is, incidentally, a waste product from another industry, steel manufacture. The development of mauveine was followed by efficient syntheses of natural dyes such as alizarin in 1869 (Graebe and Liebermann, 1869), and indigo in 1878 (Bayer, 1878 Heumann, 1890). The synthetic production of these dyes marked the demise of the agricultural production of these materials and the advent of a science-based, predominantly German chemical industry. The present-day fine chemicals and specialties, e.g. pharmaceuticals, industries developed largely as spin-offs of this coal tar-based dyestuffs industry. 

Prof. Dr. Wolfram Koch Gesellschaft Deutscher Chemiker (German Chemical Society) VarrentrappstraBe 40-42 D-60486 Frankfurt... 

Karl Hufbauer. The Formation of the German Chemical Community (1720-1795). Berkeley, CA University of California Press, 1982. Source for Lavoisier s burning phlogiston at the stake. 

Losing the War, but Gaining Ground the German Chemical Industry dur-... 

Meanwhile, in 1926, the BASF had been merged with other large German chemical industries into the I. G. Farbenindustrie. Meyer became a member of the board of directors. More and more of his time was consumed by problems of development and organization, with less and less time left for research. Because of the strain of these responsibilities, and the political situation with its restraint on freedom of research in universities and... 

In this month of November 1937, it is ten years since an agreement was signed between the French and German chemical industry delimiting the interests of both parties in the fields of coal-tar dyestuffs.. . . A noteworthy jubilee of an industrial undertaking. 

Today the German chemical industry is run by the same interests which ran it for so many years as a state-within-a-state. All of the Devil s Chemists are now free. Of those convicted, some were released on the day of judgment because, with credit for their time... 

B. Maurer, Discharges Due to Electrostatic Charging of Particles in Large Storage Silos, German Chemical Engineering (1979), 3 189-195. 

Ruhr Chemie Ruhr Chemie was an important German chemical company in the 1930s and 1940s. It was perhaps best known for its process for making acetylene by pyrolyzing hydrocarbons. See also Wulff. 

In co-operation with a German chemical company, a recipe-driven batch process was modelled and simulated using PPSiM. In the simulation study, different pipeless plant scenarios were tested and evaluated. The plant under consideration produces a set of consumer care products. 

VCI (Verband der Chemischen Industrie (German Chemical Industry Association)) (2005). Positionen zur Chemie mit Chlor. www.vci.de/ default2 rub 0 tma 0 cmd shd docnr 64356 nd ond pb.htm. 

G. Glod, PM. Campbell, T.C.J. Feijtel, PH. Masschelein, E. Matthijs and A. Rottiers, Annual Meeting of the German Chemical Society, Wurzburg, Germany, 1999. 

In 1890, Kekule was honored by his friends, his former students, and the German Chemical Society at a "Benzol Fest" held at the Berlin City Hall. The date chosen, March 11, 1890, was the anniversary of the publication date of the first benzene structure paper, and, coincidentally, it was the kaiser s birthday. The celebration was well attended by the press, industrialists, and government representatives as well as by colleagues from Germany and... 

Karl Hufbauer, The Formation of the German Chemical Community, 17201795 (Berkeley, Los Angeles, and London University of California Press, 1982). And Christoph Meinel, "Zur Socialgeschichte des chemischen Hochschulfaches im 18 Jahrhundert," Berichte zur Wissenschaftsgeschichte 10 (1987) 147168 and "Theory of Practice The Eighteenth-Century Debate on the Scientific Status of Chemistry," Ambix 30 (1983) 121132. 

Arthur Hantzsch at Wurzburg had difficulty getting his papers published because organic chemists editing the Berichte of the German Chemical Society insisted on the use of classical chemical methods for establishing the identity of a compound rather than methods of cryoscopy or spectroscopy. See Jeffrey Johnson, "Hierarchy and Creativity in Chemistry, 18711914," Osiris, 2d ser., 5 (1989) 214240, on 234. 

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