Tjecv SquCfiment
SEMICARBAZ1DE H Y D R O C H L O R IDE CP Grade: Pract Grade:
Assay 9 9 - 1 0 0 % Assay 98*3?) mi n .
White crystals, freely soluble i n water, insoluble in alcohol. Use: Isolation of Ketones and a l dehydes, forming well-defined crystalline compounds.
3-5 DINITROBENZOYLCHLORIDE
Sample
Changer
Routine radioactivity measurements on large numbers of samples a r e facilitated b y t h e automatic sample changer manufac t u r e d by Tracerlab, Inc., 55 Oliver St., Boston 10, Mass. Quicker, more accurate a n d reproducible results with fewer work e r s are claimed; measurements on a s many a s 25 samples can be m a d e automatically
Cream colored crystals, M.P. 69-7CTC. Use: Identification and isolation of certain hish molecular compounds containing H y d r o x y - g r o u p s .
•
HYDRAZINE BASE HYDRAZINE SULFATE SEMICARBAZIDE BASE SODIUM CYANATE SODIUM AZIDE.
«iftmouri •
CHEMICAL CO., IMC. 6 0 0 Ferry S t . , N e w a r k 5, M . J,
•
without the attention of .a technician. Results a r e recorded on a paper tape. T h e u n i t can also be used for half-life measurements or, with minor changes, for obtaining energy s p e c t r u m d a t a on a partic ular sample. T h e four c o m p o n e n t s of t h e instrument are a sealer for detecting a n d totalizing radioactive disintegration, print ing interval timer, lead-shielded manual sample changer w i t h preamplifier, and t h e a u t o m a t i c sample changer.
Fluid Catalyst
"PRECISION"-FREAS GRAVITY C O N V E C T I O N OVEN The economical oven for all Labora tory needs—baking, evaporating, an nealing, conditioning, drying. Sacked by approximately 15 years of s«ervicc. F Ε AT U RES: Exclusive Hydraulic Ther mostat, fully-enclosed, snap action silver contacts, 5 year guarantee. All-welded Heater Bank, operates at black heat, 5 year guarante-e. AU metal, double wall constructionGlass w o o l blanket insulation. Stainless steel interiors. Stainless steel exteriors also. Five sizes. Write for Catalog 330-1 -
Greatly Improved Deliveries On Most All ModeLs PURCHASE FROM YOUR LABORATORY SUPPLY DIALER
Precision S< î e n tîf î ^ C o . 3 7 3 7 W. Cortland St., C h i c a g o 47, ILL.
1176
Filter
Filters designed for long life when used in fluid catalyst pilot p l a n t installations a r e obtainable from t h e Micro Metallic Corp., 193 Bradford St., Brooklyn 7, Ν . Υ . T h e y a r e fabricated from porous 1 8 - 8 stainless steel a b o u t Ve inch thick in units of lengths from 6 to 54 inches. T h e pres sure drop through the filter elements is claimed to be very low. Even when used with the finest catalyst t h e elements do n o t appear t o plug u p . T h e filter cake is dis charged from t h e whole surface upon a p plication of the blowback pressure.
Continuous
Records
A speed and production recorder an nounced by the Electric T a c h o m e t e r Corp., 22nd a n d Vine Sts., Philadelphia, Pa., is described a s a rugged gear-driven unit electrically operated a n d producing a per m a n e n t record of speed and production when properly installed on any industrial machine. I t consists essentially of a synchronizing contactor which may be attached to and driven b y the prime mover or machine. A step-by-step motor in the recorder is electrically connected to the contactor and follows i t s motion. A steel stylus is driven across a wax-coated chart. C H E M I C A L
Repetition of t h e cycle of operations pro duces a scries of parallel lines, the length of which is proportional t o t h e speed or pro duction. T h e ends of t h e lines form a speed curve. T h e recorder m a y be in stalled in any remote position.
Thermal
System
A single capillary, organic liquid actu ated thermal s y s t e m which is described as particularly a d a p t a b l e t o applications where a small bulb is required, short range intervals are desirable, the manufacturing process is sensitive to mercury, or subzero temperatures a r e encountered is offered by Taylor I n s t r u m e n t Cos., P . O. Box 110, Rochester 1, Ν . Υ. T h e system utilizes a single-bore capillary a n d a single Bourdon spring with a U-shaped bimetallic com pensator on t h e spring for case t e m p e r a t u r e changes. S t a n d a r d charts are used.
Stainless Steel Laboratory Ovens Electric heating, baking, a n d drying ovens of stainless steel a r e suggested by the manufacturer, M o d e r n Electric Labo ratory, 6131 South Wentworth Ave., Chicago, 111., for laboratory testing of coatings, plastics, ceramics, dairy products textiles, pharmaceuticals, paper products, soaps, and other materials as well a s for use in school laboratories. All sizes have interiors of stainless steel. T h e y are easy to keep clean a s well a s corrosion-resisting. Uniform t e m p e r a t u r e is secured from the heavy nichrome element which covers the entire b o t t o m area. T h e interior is 8 inches high in t h e 500-watt size, 12 inches high in the 800-watt, a n d 14 3 / 4 inches high in t h e 1,750-watt. Accuracy a n d response sensitivity a r e claimed to be very high.
Glass-Reinforced Belting and Hose A conveyor belt for h o t materials which is cushioned with rubber a n d strengthened with glass is being manufactured by Hew itt-Robins, I n c . , Buffalo 5, N . Y . A glass-fiber rubber hose which resists acid and gives longer service t h a n standard cotton yarn reinforced hose is also avail able. These developments are claimed to be t h e first such use of Fiberglas reinforce ment.
Valve
Positioner
A cam-operated positioner is a key fea ture of a d i a p h r a g m motor valve of the disk or butterfly t y p e announced by R-S Products Corp., Philadelphia, Pa. Control of flow 'characteristics is attain able by changing earns i n the field on the cam-operated positioner, which a d d s to AND
ENGINEERING
NEWS
the normal functions of the disk type valve. T h e desirable characteristics of a straight line, semilog curve (V-port), ratio plug valve, t h r o t t l e plug valve, linear, or almost a n y other special char acteristics to suit individual process re quirements a r e named as within the range of t h e positioner.
Professor N. J. PETROHOL ieUeveA,
Demineralizer Higher purity of effluent, lower cost per gallon, and simpler regeneration are claimed for its packaged-unit demineralizers by the Barnstead Still & Sterilizer Co., Inc., 135 Lanesville Terrace, Boston 31, Mass. Improved synthetic resins and flow of the water u p w a r d through the resin beds are said t o increase efficiency. Regenerating time is shortened by elimi nation of backwashing. Installation is sim ple since it is only necessary to connect the units to water supply and waste in order to s t a r t operation.
Miniature
tUcU
The supply o f chemicals will soon b e
getting
close to t h e d e m a n d . If your n e w product plans include t h e use o f alcohols a n d other solvents, w e ' d like to tell you a b o u t Enjay Solvents M a d e
From Petro
leum . . . N o t e d f o r Purity a n d Uniformity.
Foundry
A small melting furnace furnished with equipment necessary t o produce sand- and plaster-mold nonferrous castings has been announced b y the Sawyer Bailey Corp., 785 Hertel Ave., Buffalo 7, Ν . Υ. This foundry was designed for school, labora
fclMJAY
ENJAY COMPANY, INC. "The Original Synthetic Solvent Manufacturers" 15 West 51 st Street
Midwest Division:
New York 19, Ν . Υ.
221 N . LaSalle St., Chicago 1 , III.
/073V&Z
GROEN KETTLE
tory, a n d commercial use a n d consists of a furnace capable of operating a t 2,400° F., crucibles a n d holder, tongs, skimming and stirring rods, asbestos gloves, and goggles. T h e molding equipment includes foundry sand, flask, riddle, rammer, and other tools. Manufactured, natural, or bottled ga's m a y be used as fuel a t pressures nor m a l l y supplied for domestic use.
Portable
Leah
G R O E N RA M o d e l . S p e c i a l l y de signed for EXTRA - T H O R O U G H M I X I N G . Baffle p l a t e e x t e n d s from channel down close to bottom o f kettle. Scraper blades o p e r a t e in s t a g g e r e d positions to k e e p entire contents under constant, uniform agitation. Thorough mixing is posi tive. Agitator mechanism is single motion, motor driven. AH parts of a g i t a t o r quickly r e m o v a b l e , and as easily re-assembled, m a k i n g fast cleaning a simple m a t t e r . CON F O R M S TO M O S T R I G I D HEALTH DEPT. REQUIREMENTS. A great unit f o r chemical processing where dependable precision is vitalW r i t e for details.
Detector
A portable leak detector, especially de signed for production testing of hermeti cally sealed units such a s are used in re frigerators, deep freezers, and air condi tioners in which a halogen compound is the refrigerant, is offered by t h e special prod ucts division of t h e General Electric Co., Schenectady 5, Ν . Υ . Other applications of this instrument include locating leaks in t a n k s , boilers, piping, a n d other closed systems into which halogen compounds can be introduced as a tracer. (Continued on page 1195) V O L U M E
26,
NO.
16
» .
G R M II
MFG. CO.
WORLD'S LARGEST P R O D U C E R S OF
»
APRIL
19,
1948
1177
EQUIPMENT
Mart... PROCESS, MAINTENANCE, A N D A U X I L I A R Y EQUIPMENT, FOR THE PLANT AND LABORA TORY IN T H E CHEMICAL PROCESS INDUSTRIES
»3^^W^WWWW^^WW*^*W%*^W%^*^»^^^^*^WW^^WW
ReAea^ck JlaktAaicViu
AucUlcUde. tyot (le+it
Elaborately appointed and equipped bacteriological, chemical, and pharmaceutical laboratory on one 16,000 s q u a r e foot floor i n modern concrete building i n central Philadelphia will b e available later this year when present tenant moves to new manufacturing plant. Huge installation expenses can b e saved by taking over this floor as it is.
TERMINAL
WAREHOUSE
81 F a i r t t t o u n t A v e .
FLASH-0-LENS
COMPANY
Philadelphia
SPOTLIGHTS as it MAGNIFIES!
23, Peitna.
Chemists, engineers, and technicians — throughout industry — use FlashO-Lens for inspection work.
In addition to ourfineanalytical filterpapers we furnish
Special F i l t e r p a p e r s for t h e C h e m i c a l Process I n d u s t r i e s Write for Bulletin No. 66-C Giving Data on Your Requirements
It's portable — with microscopic ac curacy and complete illumination. Plug-in and battery models available with 5 or 7 power lens. Specially designed housing allows interchanging of lenses. Priced from $9.35.
ample for m a n y potentiometer and bridge circuits which formerly required galvan o m e t e r s with separate reading devicesAvailable sensitivities a r e 0.5 microvolt, 0.005 a n d 0.0005 microampere per milli meter. Period is about 3 seconds.
Send for free illustrated
E
SCHLEICHER & SCHUELL CO. 116 W e » M 4 t h St. N e w York Π , Ν. Υ.
Oil Burner
=FOH SAUE= 1 — Coleman Double Monochromatic Spectro photometer Model 10S-30, including one Coleman Electrometer, Model No. 310. Included is additional equipment used with the Spectrophotometer such as curvettes, lamps, batteries, etc. Box 9 0 6 - J - 4 , Chem. & Eng. News, Easlon, Pa.
Measure
WEAR of
RESISTANCE
RUBBER
Write
for
new
literature.
TABER INSTRUMENT CORP. 122
G o u n d r y St., N o . T o n a w a n d a , N .
New Equipment {Continued from page 1177)
^alvano
meter
T h e moving system, magnet, lamp, cale, and l a m p transformer of the Type Ε alvanometer offered by Leeds & Northup Co., 4934 Stenton Ave., Philadelphia 4, P a . , a r e all contained i n a single com•act case. Sensitivity is claimed to be /OLUME
2 6,
Safeguard,
T h e Combustion Control Corp., Cam bridge 42, Mass., has introduced a photo electric scanner for flame failure protec tion o n oil burners. T h e equipment is claimed to guarantee instant burner shutdown in case of flame failure.
Numeric^.., fche rubbing
NO.
16
»
»
Bucket
Elevator
Use of a single s t r a n d or chain a n d a double row of buckets in its bucket eleva tor for handling chemicals and other bulk material permits high capacities when operating a t either slow or high speeds, according to t h e Beaumont Birch Co., Schaff BIdg., Race St., Philadelphia, Pa. T h e flanged pulley type h e a d wheel a n d the discharge arrangement a r e designed t o pre vent a n y spillage from t h e buckets a s they go over the head, where t h e material i s dis charged into a chute. H o t , light, fluffy, fine, coarse abrasive, fragile, or sticky materials can be handled without special adjustments. » APRIL
19,
catalog
Seamless Stainless Steel
A h o m e oil burner which converts oil into j e t s of gas in a special firing head before actual combustion takes place has been introduced by Consolidated In dustries, Inc., Lafayette, Ind. I t i s ex pected to reduce oil consumption in small homes by as much as 5 0 % a n d is a d a p t able t o all types of hot a i r furnaces a n d to steam and water boilers.
Combustion
LEATHER PAINTS LACQUERS ELECTROPLATE
o££j$>^
Aid
price
l l f D i l i C 9 Ρ Ω 4 9 ° N o r l h Avenue . I f . Γ l l \ L 01 U l l . Elizabeth 3 , N . J .
1948
KETTLES, 2 4 qt., 1 4 " diam., 1 0 " deep, heavy stainless bail handle . $16.95 ea. BUCKETS, 15 qt., bail handle $10.50 ea. B O ^ L S , mixing 3 0 q t . , 2 2 " diam. . $32.25 ea. LADLES, 7 2 oz., l o n g handle $ 7.50 ea. PITCHERS, 4 quart $ 9.35 ea. Write, for circulars on othzr S.S. items. A N C H O R E Q U I P M E N T C O . INC. 14 C o o p e r Square . N e w Y o r k 3, Ν . Y.
STAINLESS STEEL T A N K S
Surplus A i i Corps Pressure Oxygen Tanks. Nine gallon capacity. 12" dia., 24" long. Hemispherical ends tapped for VA" pipe connections. Some tapped at one end only. Rated strength to 400 P.S.I. 18 gauge stainless steel. $15.00 each F.O.B. Auburn, Ν. Υ. Specify tapped one or two ends. Ireland & V i c e , B o x 146C, Auburn, Ν . Υ.
=
U S K D EtfelTIPMEBiT
=
FOR S A L E : Surface condenser, copper tubes, Everdur s h e l l , tube sheets end expansion j o i n t , steel water box, 4-pass countcrcurrent water and vapor Row, 2 3 4 sq. f t . surface, $2,250 or best offer F.O.B. Cincinnati. Available im mediately. B o x 9 0 3 - J - 4 , Chem. & Ens- News, Easton, Pa.
FMC Your First Source for G O O D E Q U I P M E N T ! • Large stock on hand in New York a n d on Location. • Complete Listings of all Company availables. • Complete Listings of all War Assets in our field. • Consultation on Production Methods with equipment suggested in each process. • Complete Library of Catalogs of most processing equip nient now being made. • Quick service b y wire, phone and air mail. F I R S T MACHINERY C O R P . 157 H u d s o n St. New York 13, Ν. Y.
1195
TECHNICAL
SERVICES CONSULTANTS, ENGINEERING SERVICES, TESTING LABORATORIES, PATENT ATTORNEYS, AND OTHER PROFESSIONAL SERVICES
FOOD RESEARCH LABORATORIES, INC.
Research
Founded 1922
for practical industrial problems that takes up where theory leaves off. Backed by α tremendous, nation ally known institution with 68 years of intimate contact with every field of industry. For further information v/rite THE
Research Division OF THE
UNITED STATES TESTING CO., INC. 1 4 1 5 PARK AVENUE, H O B O K E N , N . J. PHILADELPHIA, PA. · B O S T O N , MASS. W O O N S O C K E T , R. I. · C H I C A G O , ILL. N E W Y O R K , N . Y. · LOS ANGELES, CAL. Member of American Council of Commercial
Laboratories
RESEARCH CHEMISTS and ENGINEERS A staff of 75, includins chemists, ensineers, bac teriologists and medical personnel w i t h 10 stories of laboratories and a pilot plant are available for the solution of your chemica I and engineering problems. W r i t e today for Booklet N o . 4 "The Chemical Consultant and Your Business" FOSTER D. S N E L L , I N C . 29 W. 15th St. New York 1 1 , Ν . Υ.
OTS Reports Copies of the following reports can be obtained at the prices indicated from the Office of Technical Services, Department of Commerce, Washington 25, D . C. Orders should be accompanied by check or money order, payable to the Treasurer of the United States. The preparation of fluorobenzene for use in G I X , a n insecticide analagous to D D T b u t using fluorobenzene in place of monochlorobenzene, a n d t h e composition, method of manufacture, a n d testing of G I X a n d certain other German insecti cides a r e described in reports PB-77670 (Fluorobenzene manufacture, mimeo graphed, 50 cents, 13 pages); PB-360 (Insecticides and fungicides, mimeo graphed, 25 cents, 15 pages); and P B -
1196
Philip B. Hawk, Ph.D., President Bernard L. Oser, Ph.D., Director Research - + Analyses -4- Consultation
Biolosical^ Nutritional, Toxicolosical Studies
F o r the R o o d , Drus and A l l i e d Industries 4 8 - 1 4 33r«d Street, Long Island City 1 , Ν . Υ .
To create new specialties. To improve present products.
BJ0RK5TEN ^ V ^ J J , E S RESEARCH ^ J0^ 185 N . W a b a s h Ave.
22413 (Invr
