Organic syntheses. Volume 38

Sons, Ine., New York, 1959. vi + 187 pp. Figs. and tables. 16 X 23.5 em. 8i.50. This boak deals with precipitations in a,hich the precipitating agent ...
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nnthors have achieved their statpd ohjeetive and the book can be recommended, not only for short courses, but also to those interested in longer courses and to those desirous of review and refreshing in the fundamental principles of organic chemistry.

Organic Syntheses.

Volume 38

John C. Sheehan, Editor-in-Chief. John Wiley & Sons, Inc., New York, 11158. vii 120pp. 15.5 X 23.5 rm. $4.

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The annual volume^ of "Organic Syntheses" are now an American tradition. SAMUEL E. KAMERLING This 38th and lateet release again contains Bozodoin College the common names, the Chemical AbRrensuick, Maine stracts names if different, the equations, procedures, notes, and additional methods of preparation for 31 organic compounds. Precipitation from Homogeneous Direct,ions have been submitted hy 49 Solution contributors in addition to somc mcmhers of the Board. Each preparation has been Louis Goldon, Murrell L. Salukky, and checked by members of the advisory board Hobcrl H. Willa~d. John Wiley Ri snd assoeiate~. The cumulative mhject Sons, Ine., New York, 1959. vi 187 index lists d l material contained in Volpp. Figs. and tables. 16 X 23.5 em. umes 30 to 38 inclusive. The style, size, 8i.50.

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appearance, and quality are identical to those of previous volumes of the series. "Organic Syntheses" are t,oo well known and ert,ensively used to require any crtonsive description in this reviea. However, same new trends appear to hc rvolving. Recent volumes now contain ICSR nmt,erirtl of s. biochemical nature, and this is under~tandabledue in part to the appearance of the new related series dealing wihh "Binchemical 1'repwa.tions." I t is also apparent that some difficulty has been encount,ered hy chemists, using previous procb dures, hecnuso of the unstaiiility of various compounds. Special precautions are now incloded, RR an appendage, far the preparation of et,hyl asodicarboxylate [ O q . Syntheses, 28, 59 (1948)l; methoxyacotylenc [Ory. Sfjntheses, 34, 46 (1954)l and o-toluamide [Ow. Syntheses, 11, 97

This boak deals with precipitations in a,hich the precipitating agent is generated (hy h,vdrolgsis) within the salntian. .4lthough it is small in size, this book represents a vahlahle contribution to tho chemical literature. In the authom' words "the numerous papers on precipitation from homogeneous aolution are scattered throughout vario~wjournals, and thus it, has swmed dwirahle to hring all the information into n single volume." The book should he of g r e ~ t e s use t to the analytical chemist although chemical engineers engzged in forming or purifying products h p precipitation may well find helpful ideas in both the theoretical and prarticd sectionn. Approximately t,wo-thirds of the text is devotod to present,ation of specific prooedmcs and critical diacuasion of the results. Following the introductory chapter the next. nix deal, in succession, witith precipitations of hydroxides and bat;ic salts, phosphat,es, oxalates, sulfaten, sulfides, and misoellaneom anion*. The nort two chspter8, which take up most of t,he remaining third of the boak, are devoted to theoretical aspects of precipitation processes. The first of these ~ h s p t e r scovers the distrihntion laws and the theoret,ieal aspects that have been ~ l u c i d a k dusing precipitation from bomogeneous solution; the second discusses the nolection of conditions for optimum ~fficionay in a fractional precipitation. The tenth and final chapter, Applications in Chemical Technology, is short a n examples hut long on intereating extrapalationn into the realm of future possibili t i c ~far t,he technique. The authors have done a commendable job in scoompliahing what they set out to do. When and if the authors are faced with a second edition, the reviewer feels that they might profitably disgress somewhat to include a bit more background taken from the voluminous clmsical studies of copreeipitation. The present volume appears to have been written on the assumption that the reader would he t,horoughly acquainted with the historical background and would need only an acortsional reference to tie together "heterogeneous" and "homogeneous" precipitadion processes.

L. B. ROGERS Massachuselts Zmtitute gf Technology Cambridge Volume

36, Number 9, September 1959

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(1931); 13, 94 (1933)l; and [Orp. Syntheses, Coll.Vol., 2.586 (1943)l. Chemists dealing with these materials should proceed wit,h caution, and holders of the pmvious volumes should mark these dirertions accordingly. Perhaps greater care should he vsercised in evaluating future preparations t o determine any possibk explosive hazards. The popularity and extensive use of this scrica is attested by the fact that 27 of the first 29 individual volumes are already out of print. Volumes 30 t,o 38 inclusive, as well as Collective Volumes 1, 2, and 3 are still available. I t is likewise significant t h a t we are rapidly approaching thc time when r e may expect the 4th Collective Vohme.

RALPHE. DUNBAR North Dakota Slate College Fmpo

Chemical Engineering Prmlice Volume 5. Fluid S y d e m s 1. Edited by Herhert W. Cremer and Tiejor Davies. Academic Press, Inc., New York, 1958. vi 695 xxiv pp. Many figs. and tables. 17 X 25 em. 919.50. Subscription price $13.30 per volume.

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This volume is entitled "Fluid Systems I," and a t least one half of the contents is a misnomer to the U. S. method of classification. The first two chapters on The Transportation of Liquids and The Transportation of Gases are quite thorough and go further than our unit operations text books. The next three chapters (Pipe Systems for Liquids and Gases, Design of High Pressure Vessels, and I'roduction of Vacuum) are very well written and go into much mechanical detail which seems to be needed in this dimmion. Theoretical and practical aspects are eovercd in t,hese chapters. The following three chapters on liquidliquid systems cover very well the equilibrium systems, the calculation methods and thc extraction equipment used in commercial installations. These three rhapters cover the complex m i s t u r ~ sas WPII a s the usual superficial coverage of only the ternary systems. Variom metho:ls of stage calculation are given using 110th the equilibrium stage-wise methods r s well ns the methods of transfer ~mit,s. Illu~trativeprohlems are included. The last four chapters attempt to cover the subject of distillation. The chapters rover vapor-liquid equilibria, binary distillation, multicomponent distiUat,ion, and distillation equipment. A relatively complete amount of information is packed into the 32-page discussion on vaporliquid equilibrium. As one would suapeet, the discussion on mi~ltieomponent equilihria is almost nil. The chapter on binary distillation is extremely elementary and is the type of material covered in mast of our undergraduate courses. This chapter could have been diminabed without being missed by most chemical engineers who will use this hook. The chapter on Multicompanent Distillation is a 25-page cursory coverage of

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Journal of Chemical Education