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THE CHEMICAL WORLD THIS WEEK

to start in a few weeks. T h e plant will p u m p nearly two million gallons of super­heated water through pipes into the de­posit every 24 hours to melt t he sulfur. The molten sullur will he transported to insulated barges to Port Sulphur lor stor­age. Production goal for the plant is one million tons of sulfur a year.

PATENTS

Patents Released for Public Use By Atomic Energy Commission

Descriptions of 26 patents owned by the U. S. Government and held by the Atomic Energy Commission have been transmitted to the U. S. Pa ten t Office for^ registry and listing in the official register ul patents . AEC will grant nonexclusive, royalty-free licenses on the listed patents as part of its program to make non-secret technological information available for use by industry. Commission-held patents and patent applications released for licensing now total 485 .

Patents of chemical interest are listed below. Applicants for licenses should ap­ply to the Chief, Patent Branch, Office of the General Counsel, U. S. Atomic Energy Commission, Washington 2 5 , I"). C , iden­tifying the subject matter by patent num­ber and title. Copies of these; pa tents may be obtained trom the LI. S. Patent Office.

Radiation Measur ing Ins t rument . Pat. 2,601,583. This patent describes an im­proved portable radiation instrument cap­able ol holding its calibration to about 10' i for prolonged per iods of t ime under \ arying atmospheric conditions.

M e t h o d o f C o n c e n t r a t i n g I so top ic Car­bon . Pat. 2,602,047. Th i< patent CON ers a process o l enrit h i u g ca rbon d iox ide w i t h respect l o the hea\ > isotopes of carbon con ta ined there in c o m p r i s i n g con tac t i ng said carbon d iox ide w h i l e present to the extent of 0.5 to 10r < ( v o l u m e » in adm ix ­ture w i t h an inert iras w i t h c h l u r o p h y l l i c plant l i f e in a closed system, and subse­quent ! } separat ing ca rbon d iox ide en~ l iehed in the hea\ y isotope f r o m th< inei t gas m ix tu re .

M e t h o d of P r o d u c i n g Z i r c o n i u m T c t r a -f luor ide . Pal . 2 .002,725. T h i s patent eo\ ers a proei-ss to r the p r o d u i t i o n of / i n o n i u m tH r a t l un r i dc c n m p i i s i n g react-

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Préparai ion of K;u!ioacttv«- U m m i i u * Pat. 2.ΠΟΠ i !·» T i l l · p.ih-ut '- o w t s .ι ; u » t l i c i i l ί ο | f i e ; n » ' i > . i ï . t i i i i i i « i f :'a» î i o - a i ( is *. if i ' i i ittint- A i toir. ' i i tat i l t - !*i< Miiii.lt' *,*!* V. l i l i ( l ha% 1» * H f i i ' lU tOM ÎM ' iH Ï i . tK - i i t o \ilKt

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An Industrial Survey of Huntington, W. Va. ο UOi

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The Tri-State area served by Huntington, West Virginia, is a center of distr ibution for national markets. Balanced economic factors make it one of the "Low Cos t" areas of the nation. Because of these factors . . . coupled with the region's abundant raw materials, natural resources and transportation facilities,.- Huntington offers unusual opportunities for n e w plants ind distribution warehouses,

A complete industrial survey of this E-îuntington, West: Virginia site is avai lable to business executives.

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W h y not l«>t o u r Indu*.trial fHfiiitocrs and rosi-archcrs d i r o n t ihr* answers t o your loca t ion problem·»? N o obl iga t ion , of courru-. Wri t» ' t h e C h e s a p e a k e and Ohio Ra i lway , Industr ia l 0«»v*dopmcr.t JDepar t rnent , T e r m i n a l Tower , Cleveland 1, Ohio.

Chesapeake and Ohio Railway V O L U M E 3 0, Ν Ο . 42 . . O C T Ο Β Ε R 20, 1 9 5 2

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THE CHEMICAL WORLD THIS WEEK

the molten state. The mixture is heated to a temperature sufficient to vaporize a portion of the volatile salt and the vapor of this salt is then brought into contact with natural bromine gas. Thereafter the bromine gas is separated from the vapor of the volatile bromide. T h e separated bromine gas contains the radioactive bro­mine as the result of a double exchange process.

Method a n d Appara tus for Material Separation. Pat . 2,606,291. This patent covers an improved linear type of material separator for separat ing large quantities of mixed isotopes in a relatively short pe­riod of time. T h e apparatus comprises in part means for modulat ing charged par­ticle beams to effect separation of the components thereof and other means for analyzing the velocity modulated charged particle beams to effect collection of the separated components .

Electrodeposi t ion of Metal Salts. Pat. 2,608,530. This pa ten t covers a process for quantitatively electrodepositing uran­ium fluoride from a dilute aqueous solu­tion of uranyl ni trate containing dissolved sodium fluoride t h e concentration thereof being in the range of 25 to 300 times the concentration of t h e uranyl nitrate.

Fluorinat ion Process. Pat . 2,608,593. This patent covers a method for the per-iluorination of a hydrocarbon which is ac­complished wi thou t scission of *he carbon structure of t h e hydrocarbon. The vapor­ized hydrocarbon is passed over solid cerium tetrafluoride in a reaction zone at a tempera ture be tween about 100° to about 450° C. and above the boiling point of the starting hydrocarbon. A perfluor-inated organic compound having the car­bon structure of the starting hydrocarbon is subsequently separated from the reac­tion products .

SCIENCE

Merck Group Devises Total Synthesis of Cortisone

An entirely n e w method for preparing cortisone synthetically has been devised by a Merck research team headed by Lewis II. Sarelt . the chemist whose first partial synthesis of cortisone from ox bile led to commercial production of the antiarthritis drug. Starting material for the o()-step procedure is beir/oquinono, as it is for the total synthesis developed by R. 13. Woodward and coworkers at Harvard (C&KN, May 7, 1951, page 1847).

Unique to Dr. Sarett's procedure is its stereospecifirity. In describing the pro­cedure in t he Oct . 5 issue* of tin; Journal of the American Chemical Society (page 4974) , the authors point out thai in each reaction which produces a fixed asymmetric

enter, the ratio of isomer having the same configuration as the end product to all oilu-r isomers is greater than unity.

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