Covers the physical properties of the element, its electrochemical, chemical and physiological behavior, indication and determination of gold, t h e general reactions of the g o l d salts, the compounds of gold, and gold alloys. Gmelin's Handbook o f Inorganic Chemistry. Gold. S y s t e m N o . 6 2 , Part 2. Edited by the Gmelin Institute under the direction o f E. H. E . Pietsch, v + 306 pages. V e r l a g Chemie, GmbH., Weinheim/Bergstr., Germany. Available in the U S A through Walter J. Johnson, Inc., 125 East 23rd St., N e w York 10, N. Y. and Stechert-Hafner, Inc., 31 East 10th St., N e w York 3, N. Y. 1954. $ 4 0 . 3 2 . Chapters on: occurrence, industrial manufacture, formation and preparation of special modifications in pure state, such as colloidal gold, a n d the surface treatment of gold and gold alloys. Proceedings University Research Reactor Conference. Oak Ridge, Tenn. F e b ruary 17-18, 1 9 5 4 . W . W . Grigorieff, editor. A E C U - 2 9 0 0 . v i -f- 2 2 1 pages. Office of Technical Services, Department of Commerce, Washington 25, D . C . 1954. $ 1 . 3 5 . F i v e sections on factors bearing o n reactor construction, planning for and operating a reactor, research with a reactor, some research reactor projects and some industrial plans for research reactors.
NOMENCLATURE by Austin M. Patterson
PoKyacids and Their Salts T h e c o m m i s s i o n p r o p o s e s to n a m e i s o p o l y a n d h e t e r o p o l y a c i d s and their salts in a simpler w a y t h a n i n the 1 9 4 0 report. I n s t e a d of a t t e m p t i n g t o express the formula in t h e n a m e b y m e a n s of Greek prefixes ( a s , for Na^I^O?, dis o d i u m t e t r a b o r a t e ) , t h o u g h this is also p e r m i t t e d , or b y a c i d a n h y d r i d e ratios (as, s o d i u m ( 1 : 2 ) b o r a t e ) , t h e g e n e r a l n a m e of t h e a c i d o r salt is u s e d , foll o w e d b y numerals d e n o t i n g t h e n u m ber of a t o m s of t h e m e t a l , t h e c e n t r a l element, and oxygen in the molecule; as, s o d i u m borate ( 2 . 4 . 7 ) . T h i s a p plies especially to t h e w e l l defined salts; for t h e acids m e r e l y t h e s i m p l e n a m e w i l l suffice, s u p p l e m e n t e d if n e c e s s a r y b y a formula. A n e x a m p l e of a h e t e r o p o l y salt i s ( N H * ) sVWizOw, triammonium tungstophosphate ( 3 . 1 2 . 4 0 ) . H e r e t h e n u m b e r s of m e t a l a t o m s arranged a r o u n d t h e central a t o m are given.
Substances Naturalle de Synthese. Vol. IX. L E O N V E L L U Z , A. A L L A I S , A . P E T I T , J. M A T H I E U , A N D P . POERIER. 1 8 6 pages.
Masson et C i e , Editeurs, 1 2 0 Boulevard Saint-Germain, Paris, France. 1 9 5 4 . Broche 1.880 Fr. Cartonne Toile 2 . 2 8 0 Fr. Preparation and laboratory methods for synthesizing natural substances, such as cystine, and thymine. T h e Truth about Boric A c i d and Borated Talcs. 12 pages. Pacific Coast Borax Co., 100 Park Ave., N e w York 17, N . Y. 1954. Available upon request. Facts about boric acid and its alleged toxic potential. Proceedings of the International Symposium on t h e Reactivity o f Solids. Gothenburg 1 9 5 2 . Part I 5 9 2 pages. Part II 508 p a g e s . Sponsored by T h e Royal Swedish Academy o f Engineering Sciences and Chalmers University of Technology, Gothenberg, Sweden. 1954. $12. Reports on n e w advances in the reactivity of solids as presented at the symposium attended by about 4 0 0 members from more than 20 countries. Studies of Thermal Conductivity of Liquids. Part I V . A Literature Survey of Ultrasonic Velocities in Liquids and Solutions.
B.
C.
SAKIADIS
A N D JESSE
COATES. Engineering Experiment Station Bulletin N o . 4 6 . 6 1 pages. College of Engineering, Louisiana State University and Agricultural and Mechanical College, Baton Rouge, La. 1954. $1.00. Includes prediction of ultrasonic velocities in liquids and tables of ultrasonic velocities. Guidance Procedure for t h e N e w York Professional Engineers License. J. D . CONSTANCE.
35 p a g e s .
JOHN
D.
CON-
STANCE, P. E . , 625 Hudson Terrace, Cliffside Park, N. J. 1 9 5 4 . $1.00. Practical help f o r engineers preparing for or just entertaining the idea of obtaining his license.
VOLUME
3 2,
N O . 31
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Binary Acids T h e s e , a c c o r d i n g to t h e t e n t a t i v e revised rules, m a y i n g e n e r a l b e n a m e d as b i n a r y c o m p o u n d s ( a s , h y d r o g e n c h l o r i d e ) i r r e s p e c t i v e o f t h e fact t h a t t h e y are acids. F o r t h e h y d r o g e n h a l o g e n i d e s trivial n a m e s of t h e t y p e ."hydrochloric a c i d " are current a n d m a y b e r e t a i n e d , at a n y rate i n c o n d i t i o n s where acid properties are conspicuous, or r e q u i r e t o b e e m p h a s i z e d ( e . g . , i n aqueous solution). For the compound H N a t h e n a m e h y d r o g e n a z i d e is r e c o m mended.
Thio Acids A c i d s w h i c h are d e r i v e d b y r e p l a c e m e n t of o x y g e n a t o m s i n o x y g e n acids b y sulfur are n a m e d a s t h i o a c i d s i n the usual m a n n e r . E x a m p l e s : HzCSa, trithiocarbonic a c i d ( r a d i c a l n a m e , trit h i o c a r b o n a t e ) ; H C N S , t h i o c y a n i c acid (radical, t h i o c y a n a t e ) . H o w e v e r , t h e rule says nothing as to distinguishing b e t w e e n sulfur r e p l a c i n g o x y g e n i n - O H and in : 0 .
Names of O x y g e n Acids T h e tentative revised international i n o r g a n i c rules of 1 9 5 3 ( C & E N , J u l y 5 , p a g e 2 7 1 4 ) h a v e this t o say a b o u t n a m e s of o x y g e n a c i d s : Since it has grown customary not to indicate directly the presence of oxygen in these acids (this being a survival of Lavoisier's original thesis that it w a s an essential constituent) t h e numerical prefixes which can be applied in other cases are not avail2 2 1 North King St., Xenia, Ohio.
» AUGUST
2, 1 9 5 4
able to distinguish between numerous acids derived from an. element showing different valencies. Until a better system can b e agreed upon it remains necessary to retain the customary names for a large number of acids. . . . In t h e list which follows are given all tliose which should be retained.
HSbCV HSbO* HsAsCX HsAsOa H,B204 EWBOs HB02 HCIO HCIO* HCiOs HC1CX HaCrO* HsCroO* HCNO EUVlnO* HMnO< H2N,02 H*NO, HNO a HNOa HNQ 4 H«P0 2 HaPOa H,P205 H
