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JAMES BRYANT CONANT, Editor-in-Chief HANS THACHER CLARKE ROGER
ADAMS OLIVER KAMM
Caveat: Some numbers did not OCR correctly and may not have beencorrected during the proofing! Check the 1941 print editionbefore trying these!
THE publication of this series of pamphlets has been undertakento make available in a permanent form complete detailed directionsfor the preparation of various organic chemical reagents.In announcing this purpose it may be well to mention at the outsetsome of the difficulties in the way of the research chemist, which itis hoped this series will be able to overcome. The cost of chemicalsis prohibitive to the majority of chemists; this was true beforethe war when Kahlbaum's complete supply was available, and to-daywith our dependence on domestic stocks, this cost has increased.The delay in obtaining chemicals, especially from abroad,even if the expense need not be considered, is an important factor.These difficulties have therefore thrown the research chemist on hisown resources. The preparation of materials for research, always timeconsuming and annoying, is made increasingly so by the inexactnessof the published information which so often omits essential details.Because of this, much needless experimentation is necessaryin order to obtain the results given in the published reports.As the additional information thus acquired is seldom published,duplication of such experiments occurs again and again,—a waste of time and material. It is hoped these difficultiesmay be remedied by the publication of this series of pamphlets.In other words, the authors hope to make this a clearing housefor the exchange of information as to methods of preparation of someof the most needed organic chemical reagents.
On account of the impossibility of obtaining the less commonorganic chemicals in the United States during the past few years,university laboratories have had no option but to prepare theirown supplies. At the University of Illinois, for instance,a special study has been made of this field, and methods forthe production of various substances have been investigated.As a result, reliable methods and directions have been developedfor producing the materials in one-half to five pound lots.Such work as Illinois has done is now being given an even more extensivescope at the Research Laboratory of the Eastman Kodak Company. It isfelt that the results from these various laboratories should beavailable to all chemists and it is hoped that they eventuallywill be completely incorporated in these pamphlets.
The organic chemicals herein discussed have been quitearbitrarily chosen, being those which have been needed in variousresearch laboratories in the last years and for which the di