T-57-N

John Wiley & Sons, Inc., 440 Fourth. Ave., New York 16, Ν. Υ. 1956. SI 2.00. ... cision tool manufacture, and even to the utilization of natural re ...
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HYDROFOL GLYCERIDES

CANDLES WAXES

T-57-N

LUBRICATING GREASES BUFFING COMPOUNDS

STABLE A G A I N S T . . .

TEXTILE FINISHES

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MONO-GLYCEROL ESTERS

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Transport Processes in Applied Chemistry. The Flow of Physical Properties in Chemical Reactors R. C. L. BOSWORT/H.

χ + 387 pages.

John Wiley & Sons, Inc., 440 Fourth Ave., New York 16, Ν. Υ. 1956. SI 2.00.

Reviewed by L. E. SCRIVEN,

Shell Develooment Co., Emeryville, Calif.

DI-GLYCEROL ESTERS

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HOT MELT ADHESIVES

DECOMPOSITION

JAPAN WAX REPLACEMENTS

DISCOLORATION

T-57-N is t h e h i g h e s t q u a l i t y h y d r o g e n a t e d tallow m a d e to s t u b b o r n l y resist heat, oxidation, and discoloration, t h e t h r e e bogies that w o r k against your efforts t o m a k e more marketable products. T h i s indeed, is the superior glyceride that p u t s quality second to n o n e i n t o your products, as well as a surprising d u r a b i l i t y , to assure repeat orders. Samples a n d additional information are available; w r i t e o n your c o m p a n y letterhead. Hydrogenated and Distilled Fatty Acids and Stearic Acid . . . Hydrogenated Vegetable, Fish, Sperm Oil and Tollow . . . Hydrogenated Castor Oil . . . Stearyl, Cetyl, Oleyl Alcohol . . . Sperm Oils and Spermaceti . . . Behenic Acid . . . Erucic Acid . . . Hydroxystearic Acid . . . Olefins . . . Hydrocarbons.

A V E R A G E S P E C I F I C A T I O N S FFA M a x . As Oleic Acid Number (Max.) Saponification Value Iodine Value (Max.) Titre °C Melting Pt.°C Specific Gravity @ 100/20°C Color M a x . (5V4" Lovibond)

0.5 1.0 193-198 1.0 57-61 59-64 0.8450 10Y/1R

Archer Daniels Midland CHEMICAL

PRODUCTS

c o m p a n y

DIVISION

TOO INVESTORS B U I L D I N G · M I N N E A P O L I S 2 .

MINNESOTA

For further information, circle number 94 A on Readers' Service Card, page 129 A

94 A

all I can say is—it depends on which way the a u t h o r wanted it.

INDUSTRIAL AND ENGINEERING CHEMISTRY

1 any industrial operations m a y be regarded as transport processes on the macroscopic scale, representing summations of a n u m b e r of simul­ taneous a n d interacting microscopic transport processes such as momen­ tum flow, diffusion, a n d chemical reaction, each of which gives rise to the irreversible generation of en­ tropy. By analyzing the entropy production, one can evaluate the relative contribution of each irrever­ sible process to the inefficiency of the over-all process, a n d thus obtain useful information for attacking the problem of improving over-all effi­ ciency. T h e b u r d e n of Dr. Bosworth's book, " T r a n s p o r t Processes in Applied Chemistry," is the a p ­ plication of the concept of the " g r a n d transport process" to separational processes, chemical reactors, pre­ cision tool manufacture, a n d even to the utilization of natural re­ sources. This stimulating a p p r o a c h should appeal to chemical engineers, industrial chemists, a n d others in­ terested in the practical aspects of the thermodynamics of irreversible processes. Before discussing irreversibility a n d the grand transport process, the a u t h o r devotes over half of the book to a unified presentation which brings o u t t h e similarities a n d dis­ similarities of various transport proc­ esses; all are given a c o m m o n phenomenological description in terms of driving force, flux, resist­ ance, a n d energy dissipation. T h e scope of this section is indicated by a recital of chapter titles: M e c h a ­ nism of T r a n s p o r t Processes, Phenom­ enological Description, Potential, T r a n s p o r t by Molecular Motion, R a d i a n t Transfer, Convective T r a n s ­ fer, T u r b u l e n t Transport, Interphase