Presents the latest EDITORIAL INFORMA TION on CHEMICALS & MATERIALS P rocess Equipment

Inst ruments

Zircaloy 2 . . . By New Powder Metallurgy Process

• Low neutron cross section • Good mechanical strength • Heat resistance • High temperature steam

resistance

Z IRCONIUM ALLOYS are extremely useful in the process industries. T h e i r physical properties, chemical composition, and low gas content make them a natural for the chemi­cal industry because of corrosion resistance and general high tempera­ture properties. T h e Metallurgical Products Depar tment of General Electric Co., Detroit 32, Mich., has come u p with a new powder metallurgy process for tu rn ing out a zirconium alloy to meet the needs of the industry—Zircaloy 2. T h e product is formed by a modi­fied vacuum hot-pressing technique which makes finished or semifin­ished shapes in refractory metals such as niobium, tantalum, or their carbides.

Zircaloy-2 Tubin q Produced from Powder Metallurgy Billet

Vacuum Powder Metal­ Conven­lurgy tional

Z-2 Methods Burst str., p.s.i. 8000 7500 Ultamate str., p.s.l. 85,000 70,000 Elongation, % 2 5 . 0 30 Hardness, Rb 87 .0 87 .0 Density, g./cc. 6.57 6.57 Corrosion,9 mg./sq.

dm. 19.0 19.0 Grain size (ASTM) 7 6-7 Neutron cross sec­

tion, Barns 0.18 0.18 α Three day steam 750° C. 1500 p.s.i.

Photomicrograph of Zircaloy 2 surface is key to its outstanding chemical and physical properties

T h e process provides several important advantages over conven­tionally-produced material. Zir­caloy 2 is a zirconium-base alloy which offers considerable promise to the nuclear industry because of its low neutron cross section, good mechanical strength, heat resistance, and excellent corrosion resistance to high temperature steam. In the nuclear industry the material is used as fuel element cladding, structural parts, and supports.

For chemical applications Zir­caloy 2 is also resistant to acid and alkalies. At room temperature it resists attack by most organic acids, and all concentrations of sulfuric acid; also, it generally resists hy­drochloric and other chlorides.

T h e denisity of Zircaloy 2 is 6.57 grams per cc—100% of theoretical. Gas content has been highly con­trolled to meet all nuclear speci­fications. Properties of Zircaloy 2 are nondirectional—need for de­signers to compensate for any di­rectional weaknesses are eliminated.

A collateral advantage of the technique is in dispersion strength­ening and hardening. For example a metal or alloy can be hardened by introducing in to . the powder mix small amounts of the oxides of a luminum, magnesium, or other metals. Dept. IEC, Metallurgical Products Dept. of General Electric Co., Detroit 32, Mich. C- l

(Continued on page 82 A)

VOL. 53, NO. 8 · AUGUST 1961 8 1 A

I/EC

8 2 A INDUSTRIAL A N D ENGINEERING CHEMISTRY

Aluminum Cleaner Combination cleaner and surface

treatment for aluminum is desig­nated as EX-B727-6. The translu­cent organic paste is easily applied by spraying, brushing, or wiping. Chemical reactions which occur during drying produce an organic

conversion coat ing on the meta l surface. R ins ing off the dr ied paste leaves a surface wi th excep­t ional adhesive proper t ies for bond­ing or coating. Paste also serves as a super ior surface c leaner for stain­less steel a n d chrome-pla ted sur­faces. Dept. IEC, Hughson Chemi­cal Co., Div. of Lord Mfg. Co., Erie, Pa. C-2

Glycol-Ether Solvenis

T w o new glycol-ether solvents, Ucar L M a n d 2 L M , are now com­mercially avai lable. T h e s e solvents, p ropylene glycol analogs of methyl Cellosolve a n d methyl Carbi to l , combine the excellent coupl ing proper t ies of the glycol-ethers and the low toxicological proper t ies of p ropylene glycol. Uca r solvent L M is propylene glycol methyl e ther whi le Ucar 2 L M is d ipro-pylene glycol methyl e ther . Low

7 ADVANTAGES OF THE NEW ALOYCO

GLOBE VALVE DESIGN! Redesign of sizes 2 inches and larger in­volves conversion from a rotating stem with rising handwheel and free floating disc to a non-rotating stem, non-rising handwheel with disc assembly pinned to the stem. Advantages include: • No spiral wear pattern on stem from hardened packing or hard deposit in stuffing box. • Rapid visual check of throttling con­trol by observing location of stem stop. • No galling of back seat because of ro­tating stem. • No galling between seat and disc. • Stronger disc to stem connection. • No spinning of disc. • Less corrosion attack because of elim­ination of cavity between stem and disc. For more information on these Aloyco valves of Stainless Steel and other cor­rosion resistant alloys, write for Bulle­tin #7, Alloy Steel Products Company, Inc. , 1310 West El izabeth Avenue , Linden, New Jersey. i.to

ALLOY STEEL PRODUCTS COMPANY Circle No. 22 on Readers' Service Card

Solutions Travel Safer

i n RLP

PURE LATEX TUBING

N O IMPURITIES C A N SLOUGH OUT OF TUBING WALL

N O SEAMS TO BREAK

N O LEAKAGE AT CONNECTIONS

A v a i l a b l e in Black or A m b e r

in 24 S tandard Sizes

RUBBER LATEX

PRODUCTS, INC. Cuyahoga Falls, Ohio

Circle No. 47 on Readers' Service Card

Fig. 311-Β

Siibnidiarv «/ longer lasting

ALOYCO V A L V E S

toxicity makes these solvents attrac­tive as humectants and preserva­tives. Dept. IEC, Union Carbide Chemicals Co., Div. of Union Car­bide Corp., 270 Park Ave., New York 17, N. Y. C-3

Butyllithium Large scale product ion quant i ­

ties of butyl l i thium, containing a min imum 96% alkylated l i thium, can now be obtained for chemical processing. Butyl l i thium is a stand­ard catalyst for synthetic stereo-specific polymers such as synthetic Hevea (polyisoprene) and polybu-tadiene. Butyl l i thium and other organic l i thium compounds are be­ing extensively investigated by the rubber and petroleum fields. Pos­sible uses include: intermediates in organic reactions; catalysts in the manufacture of stereospecific poly­mers in addit ion to polyisoprene. Dept. IEC, Foote Mineral Co., 18 W. Chelten Ave., Philadelphia 44, Pa. C-4

Epoxy Impregnating Resin Isochemfil 211 is an improved

unfilled, low-viscosity 100% epoxy impregnat ing resin system designed specifically for use where high heat stability, coupled with excellent physical and chemical properties, is required. Resin converts mechani­cally weak and porous structures into strong moisture—impervious and chemically—resistant material . Material can, when properly cured, be operated for extended periods at 500° F. with no loss of physical and chemical properties. Resin exhib­its excellent adhesion to wood, metals, concrete, etc., excellent elec­trical characteristics, and stability toward chemical attack. Dept. IEC, Isochem Resins Co., 221 Oak St., Providence 9, R. I. C-5

Self-Crosslinking Latex A self-crosslinking resin latex that

offers un ique formulating and end-property advantages as a binder is introduced as X-Link 2833. Th i s new vinyl-acrylic copolymer disper­sion is capable of crosslinking with­out the addit ion of thermosetting resins—in contrast to conventional thermoplastics—to form unusually

(Continued on page 84 A)

ONE OF β B A T C H - M A S T E R C E N T R I F U G A L S AT ctBA P H A R M A C E U T I C A L PRODUCTS, I N C . , S U M M I T , NEW JERSEY

CIBA unloads BATCH-MASTER* with V30A the labor required

by previous equipment Manual unloading of extremely hard filter cake posed an especially difficult problem in the synthesis of Pyribenzamine*. A TOLHURST BATCH-MASTER CENTRIFUGAL with fast bottom discharge and hydraulic unloading cut the unloading labor to l /30th of what it was formerly.

Today —• More Batch-Masters The cost-saving success of the first BATCH-MASTER has led to the

installation of additional units. Presently, three 40" models and three 4 8 " units serve varied uses in separating solids from slurries.

TOLHURST BATCH-MASTER CENTRIFUGALS combine rapid bottom un­loading with inherent stability of patented Center-Slung* suspension. A completely automated control system speeds processing and assures product uniformity. Write today for free bulletin. ' R E G I S T E R E D T R A D E M A R K OF CISA P H A R M A C E U T I C A L PRODUCTS, I N C .

TOLHURST CENTRIFUGALS DIVISION Amer ican Machine and Metals, Inc.. Dept. IECT-861, East Moline, I l l inois Please send me free illustrated bulletin on TOLHURST BATCH-MASTER CEN­TRIFUGALS with labor-saving bottom discharge.

NAME AND TITLE ~~~ — " —

COMPANY

ADDRESS ~"

CITY * ZONE STATE

Divisions of American Machine and Metals, Inc. TROY LAUNDRY M A C N I N I H V * R l t N L I T I I T I N O M A C H I N E » a D t l O T H I I A T FANS · T O L H U M t T C I N T R I P U t t A L · F I L T R A T I O N I N O I N C C M · F I L T R A T I O N f » t » I C » · NIAGARA F I L T E R S · U N I T E D S T A T E · GAUGE · AUTOSAR AUTOMATIC D E V I C E · · LAMB ELECTRIC COMPANY · H U N T E R SPRINO COMPANY · O L A S E R . S T E E R · CORPORATION

Circle No. 24 on Readers' Service Card

V O L . 53, NO. 8 · AUGUST 1961 8 3 A

Tolhurst ®

"Sicon does

not discolor under intense heat..."

Left, Model ESO-1 Majestic Incinera­tor with smart f in­ish of Sicon Blue-Gray.

Below, Model C finished in attrac­tive Sicon A lumi ­num

Sicon finish is ap­plied by spray on both models. Sur­face phosphat ized by hand wiping.

—says Bob Cox, Sales Promotion Manager of the Majestic Company,

Huntington, Indiana. "Our laboratory testing has shown us , " states Mr. Cox, " that Sicon fills our requirements for excellent color retention under high temperatures."

The burning of certain materials can generate heat far in excess of the nor­mal room temperature operation of Majest ic Inc inerators . Tha t ' s why Sicon is used—easily applied by spray — because it retains its color up to 1000°F. in aluminum or in the 500°F. range in colors. Write for Sicon Liter­ature—today I Dept. h-4.

Sicon Silicone Hi-Heat Finish

Indus t r ia l F in ishes C o . W a u k e g a n , I l l i no is

Circle No. 85 on Readers' Service Card

strong and flexible films having ex­ceptional resistance to water, sol­vents, and creep. Use of the latex has been found to el iminate prob­lems of stability, odor, compatibil­ity, and high curing temperatures usually associated with combina­tions of thermosetting and thermo­plastic resins. X-Link 2833 looks particularly promising in non-woven fabrics, paper saturation, vinyl organosol tie coats, adhesives, and textiles finishes. Dept. IEC, National Starch and Chemical Corp., 750 Third Ave., New York 17, N. Y. C-6

Epoxy Pellets Easy-to-handle epoxy pellets

el iminate the serious drawbacks of epoxies—difficulty in mixing, dif­ficulty in metering, and skin irrita­tion. Excellent bonds between metal and glass or plastic, alumi­num to a luminum, brass to stainless steel, and many other "hard-to-bond" materials. Shear strength

of steel to steel bond is 4700 p.s.i. Softer materials tear before the bond fails. Epoxy pellets have good chemical and solvent resist­ance, low moisture permeability, and good electrical resistance. Ideally suited to production line applications. Dept. IEC, Epoxy Products, Inc., Div. of Joseph Waid-man & Sons, 137 Coit St., Irving-ton, N. J. C-7

Additional New Chemicals and Materials Functional Group Monomers are of­fered in development quantities. The monomers, 2-hydroxyethyl methacry-late (HEMA) and 2-hydroxypropyl methacrylate (HPMA), are proposed for use as functional group monomers in the production of various copoly­mers and as chemical intermediates.

Dept. IEC, Special Products Dept., Rohm & Haas Co. Washington Sq. Philadelphia 5, Pa. C-8

Dimethyl Ether, with potential use as a complexing agent for boron trifluoride and a selective solvent for a wide vari­ety of materials, is now commercially available.

Dept. IEC, Commercial Solvents Corp., Industrial Chemicals Div., 260 Madison Ave., New York 16, N. Y. C-9

Bearing Grease for ball and roller bearings is filtered to 10 or 45 microns.

Dept. IEC, Bearing Inspection, Inc., 3311 East Gage Ave., Huntington Park, Calif. C-10

Fluoro-Elastomer featuring maximum operating temperatures ranging from 400" F. in continuous service, too 600° F. in intermittent use, a low tem­perature brittle point near —40° F., and a broad range of resistance to cor­rosive chemicals is available in tubing, hose, or sheets.

Dept. IEC, Plastics & Synthetics, Div. The U. S. Stoneware Co., Akron 9, Ohio

C-11

Technical G r a d e Acetophenone has a 97.1% purity, a maximum freezing point of 17.2° C , and a maximum color (Pt-Co) of 25.0.

Dept. IEC, Union Carbide Chemicals Co., Div. of Union Carbide Corp., 270 Park Ave., New York 17. N. Y. C-12

Tower Packing combines the light­weight and corrosion resistance of poly­ethylene with a new "shape" to produce a wide range of superior performance characteristics unique in packing.

Dept. IEC, The Colonial Iron Works Co., 17645 St. Clair Ave., Cleveland 10, Ohio C-13

Acrylic-Base Solvent-Type Coating is nonflammable, a single component, air-drying, and solderable.

Dept. IEC, Columbia Technical Corp., 24-30 Brooklyn-Queens Expressway West, Woodside 77, N. Y. C-14

Single Crystals of Zinc weigh over 30 pounds. The crystals, used in neutron diffraction work, are 99.999+% pure.

Dept. IEC, Semi-Elements, Inc., Sax-onburg Blvd., Saxonburg, Pa. C-15

8 4 A INDUSTRIAL AND ENGINEERING CHEMISTRY

®

by MIDLAND M

ZIRCONIUM ACETATE

SOLUTION, 22% Zr02

Introduced to meet the many demands for a more concentrated solution, ΤΑΜ Zirco­nium Acetate Solution, 22% Ζ1Ό2, is now available to the chemical industry.

Color: Clear to very light amber Specific Gravity: 1.46 pH: 3.8 to 4.2 at 20° C Stable indefinitely at room

temperature

APPLICATIONS ARE: 1. As an ingredient in "renewable" type

water repellents for textiles. 2. As a catalyst for curing silicone resins

in water-repellent treatments for leather and textiles.

3. For precipitation and fixation of many protein or carbohydrate type molecules (such as gelatin and starch) upon paper and fabrics.

SHIPPED in 500 lb. (net) drums with P. E. drum inserts.

Send for Data File

Executive and Sales Offices

111 Broadway (Dept. IC), New York 6, N.Y.

General Offices Works and Research Laboratories Niagara Falls, N.Y.

Please direct inquiries to our New York City offices

HQ FOR

Zr COMPOUNDS AND CHEMISTRY

Literature Silicone Rubber. SE-5401U is an ex­tremely low temperature silicone rub­ber for molded and extruded seals and gaskets, and other uses. I t meets speci­fications MIL-R-5847D, Class I , Grade 40, and AMS-3334. Dept. IEC, Gen­eral Electric, Silicone Products Dépt., Waterford, N. Y. C-16

Carbowax Polyethylene Glycols. A 65-page booklet gives properties, solu­bilities, specification limits, test meth­ods, storage, handling, toxicology, and selected references. Special section de­voted to uses. Dept. IEC, Union Car­bide Chemicals Co.. 270 Park Ave., New York 17. N. Y. C-17

Organic Intermediates. New cata­log discusses properties, specifications, and uses of commercially available chemical intermediates. Dept. IEC, Kay-Fries Chemicals, Inc., 180 Madi­son Ave., New York 16, N. Y. C-18

Polypropylene Glycols. Technical bulletin describes these polyethers which are used as raw materials for flexible, semirigid, and rigid urethane foams. Dept. IEC, Jefferson Chemical Co., Inc., 1121 Walker Ave., Houston 2. Texas. C-19

Corrosion-Resistant Resin. Bulletin 45-115 on Poxyglas tanks features the glass resin material and discusses manu­facturing methods. Dept. IEC, Black. Sivalls & Bryson, Inc., 7500 E. Twelfth St.. Kansas City 26, Mo. C-20

Liquid Resin. Da ta sheet describes Novalac resin for ultrahigh temperature potting, casing, dipping, and coating compounds. Available in various colors or filled and unfilled. Dept. IEC, Iso-chem Resins Co., 221 Oak St., Provi­dence 9, R. I. C-21

Phenolic Resins. Two new resins, Plyophen 23-017 and 23-057 have been developed, to withstand high tempera­tures encountered by missiles and space vehicles. Available in any quanti ty. Dept. IEC, Reichhold Chemicals, Inc., RCI Building, White Plains, Ν. Υ.

C-22

Scintillation Chemicals. Cost and technical information are given for scintillation grade fluorescent chemicals. Bull. 611. Dept. IEC, Pilot Chemicals, Inc., 36 Pleasant St., Watertown 72. Mass. C-23

Silicone Catalog. Complete line of silicone products is described, and a selector guide for silicone rubber is given. Catalog CDS-129C. Dept. IEC, General Electric, Waterford, Ν. Υ.

C-24

(Continued on page 86 A)

Size Requirements Getting Tougher?

Sturtevant Air Separators Increase 4 0 to 4 0 0 Mesh Output as Much as 3 0 0 %

Circle No. 13 on Readers' Service Card

C l o s e d - c i r c u i t air separation is of proved advantage in reduction processes. Result is a better, more uniform product. Grinding mills perform at top efficiency, output frequently increases as much as 300%, power costs drop as much as 50%. P r e c i s e separat ion of all dry powdered materials. Sturtevants cur­rently classify sulfur, soybeans, phos­phate, chocolate, feldspar, sand and ag­gregates, pigments, limestone fillers, flour, abrasives, plastics, gypsum, ceram­ics, cement and other products. Improve s c r e e n i n g — Sturte-vant Air Separators prevent blinding by removing undesirable tailings or fines from screen feed loads.

W o r k s Like Winnowing Done In a Whi r lw ind

Sturtevant Air Separators do a mechan­ical job of winnowing. Precise control of whirlwind air currents and centrifugal force results in the desired size being lifted into fines cone, oversize falling into tailings cone. A 16 ft. Sturtevant, for example, has taken a feed rate of 800 tph, containing only a small percentage of desired fines, and delivered 30 tph 90% 200 mesh, re­circulating the oversize through the grinding circuit.

Send for Bulletin No. 087.

VOL. 53, NO. 8 · AUGUST 1961 8 5 A

D I V I S I O N NATIONAL LEAD COMPANY

Feed spout

9 Models avail­able. Diameters from 3' to 18'

unaasoni wsmm

STURTEVANT M I L L C O M P A N Y

105 Clayton St. , Boston, M a s s . Crushers · Grinders · Micron-Grinders · Separators

Blenders · Granulators · Conveyors · Elevators Circle No. 54 on Readers' Service Card

What's so special about a SPERRY FILTER PRESS?

ANSWER: Your special needs! Equipped with any type of plates — center, side or corner feed — open or closed delivery—to filter liquids, recover solids, or de­colorize—yourSperry Filter Press is engineered to your particular requirements. Not only for to­day's schedule — but for the un­foreseen changes of tomorrow.

When condit ions require a change in media — in capacity — in material — your Sperry Filter Press offers the built-in versatil­ity to supersede itself.

It's the best investment you can make in a dependable and rugged filter press.

D. R. SPERRY & CO. Batavia, Illinois

Sa/es Representatives George S. Tarbox 808 Nepperhan Ave. Yonkers. N. Y.

Texas Chemical Eng. Co. 4101 San Jacinto Houston, Texas

B. M. Pilhashy (Successors) 111 Sutter St. San Francisco 4, Cal.

Alldredge & McCabe 847 Ε. 17th Ave. Denver, Colorado

The Gilbert Tramer Co. 1217 Main Ave. Cleveland, Ohio

Galloway Ratcliffe, Inc. 4053 Lindell Blvd. St. Louis, Mo.

D. R. SPERRY & CO. Dept IEC-61-8 Batavia, Illinois • Send Free Sperry Catalog • Have your Representative contact us Name _ _ _ ^ _ ^ ^ _ Company Address City State

Styrene-Maleic Anhydride Copoly­mers . Propert ies and uses are de­scribed for these materials which are promising for improving water-based paints, finishing leathers, improving floor polishes, textile and paper sizing, and in improving adhesives. Dept. IEC, Texas Butadiene & Chemical Corp., 529 Fifth Ave., New York 17, N. Y. C-2S

Zirconium. A 14-paged booklet, "Cor­rosion Resistance of Zirconium," gives detailed graphs for over 100 highly cor­rosive media in concentrations to 100% and temperatures to 400° F . Dept. IEC, Zirconium, Association, Cleveland 15, Ohio. C-26

Plastic Coating. Pfaudlon 301 is a medium priced corrosion-resistant plas­tic coating for metal . Usable both out­side and inside. Propert ies and recom­mended uses are given. Dept. IEC, The Pfaudler Co., Rochester, Ν. Υ.

C-27 Special Coatings. Industrial coatings arc described, primarily for one or more of the following uses: product protec­tion, appearance improvement, mold or die release, and dry lubrication. Dept. IEC, Service Products Div., Johnson's Wax, Racine, Wis. C-28

Die Corrosion. Special Bulletin 233 gives development story of the special-alloy steel die tha t eliminated troubles caused by corrosive effects of some ma­terials. Dept. IEC, Sprout, Waldron & Co., Inc., 130 Logan St., Muncy, Pa.

C-29 Corrosion-Resistant Materials. De­velopment story of the company is given, which manufactures a complete line of pipe, fittings, sheet, and engi­neered fabrications of PVC, polyethyl­ene, and ABB. Dept. IEC, Trans-Plas­tics Corp., 6700 Morgan Ave., Cleveland 27, Ohio. C-30

Organic Hydroperoxides . New cata­log describes a complete line of organic peroxides as to physical properties, half-life, forms, and applications. Dept. IEC, Lucidol Div. of Wallace and Tiernan Inc., 17Jfi Military Road, Buffalo 5, N. Y. C-31

Formamide. A 32-page booklet con­tains newly developed information on uses, particularly as a chemical inter­mediate, in synthesis of nitrogen-con­taining heterocyclic compounds. Dept. IEC, E. I. du Pont de Nemours cfe Co., Wilmington 98, Del. C-32

Commercial Glasses . New edition of booklet, "Proper t ies of Selected Com­mercial Glasses," gives more compre­hensive da ta on corrosion resistance and thermal expansion of 32 commercial glasses. Bull. B-83. Dept. IEC, Corn­ing Glass Works, Corning, Ν. Y. C-33

ORDER YOUR COPY OF ANALYTICAL CHEMISTRY'S 1961 REVIEWS and BUYERS' GUIDE issue only $1.50 Once a year Analytical Chemistry publishes a special issue which combines two areas of importance to the analytical chemist—reviews of significant analytical literature, and a com­prehensive buyers' guide. It is a reference volume analytical chemists use the year round to check on significant developments as well as find out who makes what and now to locate him. To conserve the analytical chemist's time, this issue is divided into two sections, f. ANALYTICAL REVIEWS. This year Reviews of Applications Analysis cover the significant developments of the last two years in

Air Pollution Clinical Chemistry Coatings Essential Oils Fertilizers Food Solid and Gaseous Fuels Ferrous Metallurgy Nonferrous Metallurgy Pesticides Petroleum Pharmaceuticals Natural and Synthetic Rubbers Water

These are carefully evaluated, interpretive summaries of significant developments and trends supported by detailed bibliographies. i. BUYERS' GUIDE. This comprehensive directory lists manufacturers, dealers, and distributors of virtually all known products, services, chemicals, materials, instruments and equipment used by analytical chemists. For quick, easy reference it is published in three parts:

Classification List— A ready-reference compilation of prod­ucts of interest to analytical chemists.

Index of P r o d u c t s -Listing of products and services to­gether with names of companies who supply them.

Company Directory— A complete list of all suppliers with their addresses and telephone numbers.

There are approximately 8000 entries under more than 500 headings. More than 700 com­panies contributed material. This directory is a necessity for every analytical chemist who uses, specifies or buys apparatus, instruments, equipment, chemicals, reagents, and other products and materials. Use the convenient coupon below to obtain your

personal copy of Analytical Chemistry's 1 9 6 1 ANALYTICAL REVIEWS

and BUYERS' GUIDE. Only $ 1 . 5 0 .

ORDER YOUR COPY TODAY

ANALYTICAL CHEMISTRY 1155 Sixteenth Street, N. W., Washington 6, D. C. Please rush my copy of your 1961 Analytical Reviews and Buyers' Guida. My payment of $1.50 is enclosed.

Nam·

Address

City Zone Stat·

Company

Position

P l u s · enter my subscription to ANALYTICAL CHEM­ISTRY for the following terms: Π one year JS U two years $9 • three years $12 Π I am an ACS member and should receive discount. Subscription prices apply to U. S. only. Canadian postas· 70c per year additional. Write for prices outside U. S. and Canada.

Circle No. 52 απ Readers' Service Card

8 6 A INDUSTRIAL AND ENGINEERING CHEMISTRY

« N O L V T I C i L H E M 1 S T R V

sgdfh Ι θ β ΐ

ILLCO-WAY DESIGNERS AND BUILDERS

ionXchange MODERN

EQUIPMENT FOR

P R O C E S S

This Automatic l o n X c h a n g e r , d e s i g n e d fo r conversion of a food product, is built of stainless steel with sani­tary fittings.

S P E C I A L - D E S I G N EQUIPMENT I W T engineers are frequently called on to plan and build pilot plants and production equipment for applications of ionXchange to chemical processes. Interesting examples in­clude recent installations for - -

• Purification of citric acid, lactic acid, and tar tar ic acid by cation and anion exchange.

• Removal of a luminum from phosphoric acid metal-finishing solutions,

• Conversion of sodium ferroeyanidc to the ammonium form by cation ex­change.

• Removal of ash from beet sugar by continuous ion exclusion.

N E W P R O C E S S E S The I W T research laboratory is constantly engaged in evaluating exciting new processes such as ion exclusion, ion retardat ion, equilib­rium separations, continuous moving-bed ionXchange, and others. These offer in!('rest­ing promise in the solving of chemical prob­lems now considered impossible or uneconomi­cal by other means.

ILL INOIS WATER TREATMENT CO. 840 CEDAR ST., ROCKFORD, ILLINOIS NEW YORK OFFICE: 141 E. 44th St., New York 17, N.Y. CANADIAN DIST.: Pumps* Softeners, Ltd.. London, Ont.

Circle No. 18 on Readers' Service Card

Dispersion Resin for P o l y v i n y l Chloride). Marvinol VR-50, an all-purpose stir-in paste grade resin for high-shear plastisol and organosol uses is described in a 20-pagc booklet, in­cluding formulation and compounding techniques. Bull. 12-500. Dept. IEC, Naugatuck Chemical Div., United States Rubber Co., Naugatuck, Conn.

C-34

Silicones. Bull. S- l l entitled, "Sili­cones for Release Paper Coatings" de­scribes three emulsions, four solvent solutions, and two controlled release additives for application from solvent. Dept. IEC, General Electric, Silicone Products Div., Water ford, N. Y. C-35

Lactonitrile. A new inexpensive bi-functional intermediate is available on development basis. Bulletin describes chemical and physical properties. Sam­ples are offered. Dept. IEC, American Cyanamid Co., Petrochemicals Dept., Bound Brook, N. J. C-36

Gas Odorants. A 24-paged booklet, compiled primarily for the natural , liquefied, and petroleum gas industries, contains latest data on gas odorants. Dept. IEC, California Chemical Co., Oronite Div., 200 Bush St. San Fran­cisco, Calif. C-37

Reagent Catalog. I tem and size list­ing for complete line of analytical re­agent and industrial grade chemicals. Dept. IEC, F. P. Jay Chemical Corp., P.O. Box. .{2, Waukesha. C-38

Vinyl Resins. Vinyl plastisol and or­ganosol technology is discussed in a 24-page booklet. Useful working man­ual for formulators and users of these products. Dept. IEC, Union Carbide Plastics Co., 270 Park Ave., New York 17, N. Y. C-39

Silicone Rubber. Complete specifica­tion guide to assist designers and engi­neers in all industries in selecting the proper type of silicone rubber for a par­ticular requirement. Selector Char t CDS-145C. Dept. IEC, Silicone Prod­ucts Dept., General Electric Co., Waterford, N. Y. C-40

Zirconium. Specifications and proper­ties are given for various zirconium compounds, including silicates and ox­ides. Bull. 930. Dept. IEC, Tarn, Div. of National Lead Co., Ill Broadway, New York City. C-41

Molybdenum Catalysts. Chemical Da ta Series Cdb-1A gives properties of molybdenum dioxide. Also a new bul­letin discusses molybdenum as a corro­sion inhibitor, and two others cover molybdenum chemistry. Dept. IEC, Climax Molybdenum Co., 1270 Avenue of the Americas, New York 20, Ν. Υ.

C-42

Problems are being solved with

Platinum group clad metals

This versatile design material gives you all the recognized performance benefits of solid platinum! • resistance to high temperature corrosion • oxidation resistance • immunity to attack by mineral acids

P L U S these benefits gained by cladding . . . • lower costs • greater strength • improved thermal, electrical conductivity

For e x a m p l e :

Platinum-clad titanium (.002 layer of plat­inum) used in a swimming pool chlorine generator lasts for years, and provides sur­face proper t ies of solid p la t inum at a fraction of the cost.

Whatever your platinum needs — tubing for transmission of corrosive fumes or liquids, anodes for perchlorates, lower cost labora­tory ware, or a substitute for short-life anodes in the commercial manufacture of chlorine — call, write, or wire Marketing Manager, Precious Metals. •Trademark of Metals & Controls Inc.

METALS & CONTROLS, INC. 8008 Forest St., At t leboro, Mass.

A CORPORATE D IV IS ION OF

T E X A S

VOL. 53, NO. 8 · AUGUST 1961 8 7 A

APPLICATIONS

M U L ti LAYER *

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STRIP · WIRE · TUBING · PARTS

I N S T R U M E N T S I N C O R P O R A T E D

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