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Book Review Kunststoff-Bestimmungsmglichkeiten (Methods for the Analysis of Plastics). By A. Krause and A. Lange

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who have familiarized themselves with programming problems.
The purpose of “Computer Programs for Chemistry”
is to provide readymade programs that can be used directly for the solution of certain chemical problems or
that can be incorporated into other programs after
slight modification. The present first volume contains
FORTRAN IV programs by several authors from the
fields of NMR spectroscopy and kinetics, as well as a
program for plotting curves (PLOTLN). LAOCN3 and
the programs NMRIT and NMREN calculate the position and the intensity of the NMR lines from assumed
chemical shifts and coupling constants. If the calculated
spectrum is similar to the experimental spectrum, the
input parameters can be improved by an iteration process. LSG or LSKIN 1 evaluates the data for a first order
reaction, and calculates the best value for the rate constant and the initial and final values of the variables.
All the programs were reproduced by photomechanical
reduction from the original programs, and the input and
output for one example is given for each program. In
addition to the explanation of the input and output, a
description is provided for each program. An important
part of this is the section “Structure of the Program”,
which offers the reader the possibility of program analysis.
While this part of the description of the program is
excellent in the case of LAOCN3, it is too short in
the description of the other programs. All the programs
have been tested independently, so that any errors are
only of a formal nature. Thus on page 22 we should have
“last two cards are blank”. Similarly, on page 24, a blank
card is missing between the data groups on the right half.
The variable ISUM (p. 29) is equal to the number of 6 spins
that are increased by 1.
All the programs can be purchased on a program tape,
and the lists and cards have also been obtainable from
the Quantum Chemistry Program Exchange (QCPE), Indiana University, Bloomington. However, even punching
out the program lists bears no comparison with devising
a new program as far as the time required is concerned,
quite apart from the didactic value of a successful program analysis to the worker.
Gunter Ege [NB 949 IE]
Kunststoff-Bestimmungsmoglichkeiten (Methods for the
Analysis of Plastics). By A . Krause and A . Lunge. Carl
Hanser Verlag, Miinchen 1970. 2nd ed., 191pp., 34
Tables, bound DM 38.--“’.
The aim of the authors is to present the methods most
commonly used in practice for the qualitative and quantitative chemical analysis of plastics, including simple
physicochemical tests such as the determination of density
and refractive index. More complicated physicochemical
methods such as IR, UV, and NMR spectroscopy or
pyrolysis gas chromatography are not included.
described. The book ends with a short section on the
analysis of additives, particularly plasticizers, and a
section on quality and acceptance tests with lists of the
DIN standards and relevant reports in the Bundesgesundheitsblatt.
The strength of the book lies in the deliberate restriction
of the subject matter to simple methods, particularly of
a chemical nature; this is especially true in view of the
large number of more complicated physicochemical methods and the work that they involve. The listing of characteristics in tabular form makes the book easier to use. A
critical appraisal of the special qualitative and quantitative
methods would have been of interest to the occasional
user. The book can be used by anyone who is familiar with
the fundamentals of analysis.
Ernst KZesper [NB 953 IE]
Cmtracepbb: The Chemical Control of Fertility. By
D.Lednicer. Marcel Dekker, Inc., New York 1969. 1st
ed., xiv, 296 pp., $ 13.75.
The book, whose six chapters are by authorities of excellent
repute, presents an informative review based on about 700
references, and is outstanding in its clear arrangement. As
an introduction to the rather heterogeneous material, the
first chapter deals with the endocrinology of the female
body, with special reference to control by the pituitary
and the hypothalamus. The subsequent sections discuss
the biology, pharmacology, chemistry, and testing of the
contraceptives, which are grouped for discussion into
steroid and nonsteroid compounds.
In the biological chapters, the effects produced by gestagens and estrogens are described in detail and summarized in tables; the results observed in animals are compared
with the clinical findings for human subjects. Current
views on the mode of action and the possible sites of action
of the contraceptives and of their individual components
are also discussed in this connection. The chemical
chapters present a survey of the structural formulas and
of the synthesis paths. Starting with the classical steroids,
the many modifications (substitution, configuration) that
have led to the various contraceptives are described. The
final chapter contains information on the testing and
screening methods, which are grouped according as the
effects tested are central or peripheral.
The present monograph provides an excellent introduction to a field whose intensive scientific investigation is
of the greatest interest to the further development of mankind. Its special value lies in the fact that on the one hand
it acquaints biologists, biochemists, and pharmacologists
with the problems of the chemical synthesis of contraceptives, while on the other it makes it easier for the chemist
to evaluate pharmacological test results and clinical findings.
Heinz Breuer [NB 957 IE]
Methoden der Organischen Chemie (Methods of Organic
Chemistry). (Houben-Weyl), Vol. V, Part la: Alkanes
and Cycloalkanes, excluding Cyclopropane and CycIobutane Derivatives. Edited by Eugen Muller. Georg
Thieme Verlag, Stuttgart 1970. 4th ed., xxciii, 692 pp.,
8 Figs., 83 Tables, bound DM 252.-.
Starting with the behavior of the plastics when heated in
an ignition tube and in an open flame and the determination of density, solubility, softening point and melting
point, refractive index, acid number, iodine number, etc.,
qualitative and quantitative methods are described for
the determination of characteristic elements. After limiting
the possibilities in this way, the special qualitative and
quantitative methods for the individual plastics are then
The present volume[’* on the preparation of alkanes and
cycloalkanes has undoubtedly been long awaited by many
chemists in industry and in technical colleges as an im-
[l] Cf. Angew. Chem. internat. Edit. 5 (1966).
[I] Cf. Angew. Chem. internat. Edit. 9 (1970).
432
Angew. Chem. internat. Edit.
Vol. 10 (1971) 1 NO.6
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