The BeckmanDB* Ultraviolet Spectro­photometer delivers betterthan0.5m/A resolut ion- f inest in its price range! Accuracy is better than 0.7 m μ at 205-334 m/A, repeatabi l i ty exceeds 0.35 m μ in the same range. Some whys: low stray light, electronical ly main­tained 100% line, simplif ied optical system, scanning speeds variable from 5-80 m μ /m inu te . Also slits that are both manually adjustable from 0.01-2.0 mm. and programmed for narrow or medium widths.

For a demonstration of the low-cost, high-resolution DB, contact your Beckman Lab Apparatus Dealer.

Or write direct for Data File LUV-13-162.

B e c k m a n ® INSTRUMENTS, INC.

•TRADEMARK B. I . I .

SCIENTIFIC AND PROCESS INSTRUMENTS DIVISION Fullerton, California

GE, Motorola Take on Process Control GE reveals line of solid-state instruments, Motorola picks early September for its unveiling Add two more names to the list of process control instrument makers. GE has lifted the cover on a complete line of solid-state electronic instru­mentation systems. And Motorola will detail features of its new line early next month.

GE's new line will be made at the company's Instrument Department at West Lynn, Mass. Full scale produc­tion will begin in the first part of 1963. The solid-state products will go under the name of GE/MAC (General Elec­tric Measurement and Control). GE/ MAC products include transmitters, controllers, final control elements, read­out devices, computing elements, and accessory equipment.

GE says all components are designed for a high-level 10 to 50 milliamp. d.c. signal transmission. For flexi­bility, GE will use modular construc­tion throughout.

Bright Future. Both GE and Mo­torola agree that electronic control in­struments have a bright future al­though the pneumatic types, at pres­ent, hold the greater share of the mar­

ket. GE estimates the market in proc­ess instrumentation and control hit nearly $330 million in 1961 and the company predicts this will reach $700 million by 1970. About $30 million of the total $330 million market was held by electronic process instrumenta­tion in 1961. But, both GE and Mo­torola foresee a rapid growth for elec­tronics at the expense of pneumatic process controls.

GE is now capable of supplying complete automated systems ranging from computers to control and super­visory equipment to instrumentation for automation.

The GE/MAC controller has an ac­curacy of 0.25% of full scale. It comes in 17 different forms and can be used as a control station for cascade, ration, bias, and high and low limit selection. GE will also furnish a full line of power actuators—electro-hydraulic, electro-pneumatic, and all electric valves.

Recorders feature null-balance po-tentiometric design and solid-state am­plifiers. They offer flexibility since

FINAL CALIBRATION. GE engineers put a new GE/MAC instrument through its final calibration. The instrument is one of a new line of solid-state products that will be made at the company's Instrument Department at West Lynn, Mass.

44 C & E N A U G . 13, 1962

WHERE CAN YOU USE HYDROXYLAMINE SULFATE? Hydroxylamine sulfate (also called hy-droxylammonium sulfate) gives you a convenient, economical source of hydrox­ylamine (NH2OH), a recently developed chemical that merits your investigation as a chemical intermediate and for new or improved processes involving mild reducing agents. VHS60 and VHS95 are the tradenames for hydroxylamine sul­fate—60 and 95-98% assay respectively —manufactured by "Virginia." Follow­ing are some of their physical properties :

VHSeo VHS95 pH of 1% by weight solution at 25°C 3.4 3.6 Bulk density, Ib/cu ft (packed) . . 85 74 Molecular weight 164.14 164.14 Assay (weight % hydroxylamine

sulfate) 60% min. 95% min. Melting point, °C 120-135 177* Solubility in water, parts product

per 100 parts water at 68°F . . 83.3 62.7 *Melts with decomposition

As a guide to your investigation of hydroxylamine sulfate, here are a few of many potential uses pinpointed to date. Those with daggers have been patented under U.S. or foreign patents, which makes them no less valuable as a starting point for your thinking.

INORGANIC USES • Elementary polonium can be prepared by

reducing polonium hydroxide, Po(OH)4, with aqueous or anhydrous hydroxyl­amine or reducing polonium chloride, PoCL4, with sodium hydrosulfite in hydro­chloric acid.

ORGANIC USES • Used in sensitized photographic emul­

sions and particularly in highly sensitized gelatinosilver halide emulsions.f

• Addition of amino or imino groups to polynuclear compounds by hydroxylamine forms products useful as dyes, dye inter­mediates, medicaments, pest-combating or age-retarding agents.f

• Treatment of aryl or cycloalkyl hydro­peroxides with hydroxylamine results in simultaneous production of phenols and oximes.f

"Virginia" Hydroxylamine Sulfate has already found important use as a reducing agent in pro­duction of synthetic polymers, paints, pharma­ceuticals, photographic chemicals . . . and many more applications are now under investigation." —Dr. M. A. Kise, Director, Research and Devel­opment, Virginia Chemicals & Smelting Co.

a catalyst. NH4OAc and hydroxylamine sulfate are a possible combination.

TEXTILES • Fibers composed of acrylonitrile homo-

polymers or copolymers have their -CN groups partially converted to -C(NH2): NOH groups by hydroxylamine. The fibers can then be readily dyed with acid wool dyes.

FATS AND OILS • These can be stabilized against develop­

ment of objectionable odor, taste or color

by addition of 0.1-2.0% hydroxylamine during refining.f

ELASTOMERS • Trialkyl phenols used with hydroxyla­

mine provide a more effective short-stop for Buna-type latexes and tend to prevent cross-linking. Results obtained are more than the sum of the effects of the individual agents and are obtained without appreci­ably discoloring the latex after passing through finishing operations.f

• Foam rubber is produced by adding hy­drogen peroxide and catalase inhibited with hydroxylamine to creamed latex. Initial rate of decomposition of the perox­ide is retarded sufficiently to permit thor­ough mixing of the blowing agent and catalyst in the latex, with a more uniform sponge resulting after molding and curing, f

• As a catalyst for aqueous emulsions and suspension polymerization of olefinic com­pounds. Improved rates of polymerization are obtained among olefinic and acetyl-lenic compounds by use of hydrogen peroxide combined with hydroxylamine, which acts as a cationic surface-tension reducing agent.f

HELP IN EVALUATING HYDROXYLAMINE "Virginia" is ready to give you any assistance needed in evaluating VHS60

or VHS95 for your specific process. Our experience with reducing agents is broad ; our service ranges from technical data to laboratory analysis of your process to free in-plant trials by "Virginia" tech­nical service specialists. Let us know how we can help you. fU.S. or foreign patents

Chemical Division, Virginia Chemicals & Smelting Co. Dept. 148, West Norfolk, Va.

D Please send latest bulletin on "Virginia" Hydroxylamine Sulfate

Π Send technical data on potential use of VHS in the following process:

Name

Company

Address

City Zone State

CELLULOSE • Soluble, high "molecular" weight cellu­

lose triacetates can be prepared in very short time by the action of Ac20 on cellu­lose impregnated with a swelling agent and

CHEMICAL DIVISION

VIRGINIA CHEMICALS & SMELTING COMPANY WEST NORFOLK, VA.

Technical Service and

they are independent of controllers and other receiving units. Two re­corders—Type 520 for measuring milli­volts directly and Type 530 for mea­suring current signals as received from transmitters—are provided for system use.

Transmitters have two-wire solid-state circuitry. A common pair of wires is used for power and signals thus eliminating the need for line power at field installations. GE/MAC pressure transmitters convert process pressures ranging from vacuum to 10,000 p.s.i. into a proportional 10 to 50 milliamp. d.c. signal. Also differ­ential pressure transmitters are pro­vided for use across orifices and flow nozzles, and to measure flow rate. Temperature transmitters can be used with thermocouples, resistance bulbs, or any low level millivolt signal.

GE/MAC accessories include inte­grators, power supplies, alarms, and limiters. The GE/MAC line also cov­ers a full complement of analog com­puting elements for variable function generation, adding, dividing, subtract­ing, multiplying, and integrating.

BRIEFS

A plug-in digital readout for use with its AutoAnalyzer system of continuous automatic chemical analysis is avail­able from Technicon Instruments Corp., Chauncey, N.Y. Called Auto-print, it automatically identifies each sample by number, and prints indi­vidual assays of unknowns and stand­ards line by line. Ε 30

High-speed digital printer is being in­troduced by Franklin Electronics, Inc., Bridgeport, Pa. The Model 1000 printer features a speed of 20 lines per sec. with up to 20 columns of print. Spacing is six lines per in. Standard units operate at 115 volts, 60 cycles.

E31

Two temperature controllers that per­form both temperature indicating and proportioning functions are offered by Minneapolis-Honeywell Regulator Co., Minneapolis, Minn., for industrial processing applications. Models are available covering several temperature ranges between - 1 5 0 ° and 1200° F. The proportioning controls—one for electric systems and the other for pneumatic systems—stabilize tempera­ture. Ε 32

C&EN PROGRESS REPORT

Companies added these products to their lines during the past month INSTRUMENTS AND CONTROLS . . .

Product Surface pyrometers

(Pyrocons) Explosion-proof pulsing switch

Microminiature thermocouples

Photometric analyzer (Du Pont 400)

Cells for paper electrophoresis

Electron microscope (Model T-l)

Microphotometer

Direct recording oscillograph

Beta gage

Refractometer

Dual-window pulse height analyzer

Vapor pressure monitor (PSD)

Hydrogen sulfide alarm sampler

Pneumatic rotameter transmitter (Model NT FLOTHRUmatic)

Mass flowmeter

Company Alnor Instrument Co.

Chicago, III. Badger Meter Mfg. Co.

Milwaukee, Wis. Baldwin-Lima-Hamilton

Electronics Division Waltham, Mass.

Du Pont Instrument Products Divi-sion

Wilmington, Del. E-C Apparatus Corp.

Swarthmore, Pa. Fisher Scientific

Pittsburgh, Pa. Gelman Instrument Co.

Chelsea, Mich. Minneapolis-Honeywell Regula­

tor Co. Heiland Division

Denver, Colo. Ohmart Corp.

Cincinnati, Ohio Optics Technology, Inc.

Belmont, Calif. Picker X-Ray Corp.

Cleveland, Ohio Precision Scientific Development

Co. Chicago, III.

Research Appliance Co. Allison Park, Pa.

Schutte and Koerting Co. Cornwells Heights, Pa.

Simmonds Precision Products Tarrytown, N.Y.

Features Redesigned with new movements

mounted in extra strength bases Provides uniform pulses of 30-millisec.

duration For temperatures up to 5000° F.

For split-beam or double-beam operation

Can pass as much as 2000 volts at 200 milliamp.

Gives 50A resolution and 5000X magni­fication

Detects as little as 0.004 lumen per sq. ft.

Has 36 channels and designed for rack mounting

For measuring thickness of sheet metals

For continuous process monitoring or control

Analyzes two energy regions from one input signal

Automatically measures Reid vapor pres­sure

For automatic monitoring of H2S

For use with metal-tube rotameters

Has linear and dynamic output; meas­ures flows down to 1/2 lb. per hour

46 C&EN AUG. 13, 1962

EQUIPMENT

EQUIPMENT AND LABWARE . . .

Automatic water strainer (AWS Poro-Edge)

Packaged crushing plants

Heat exchangers (C-200andC-210)

Centrifugal pumps

Conveyor belting (Corra-Trough)

Cryogenic chamber and biological freezer (NitroFreeze)

Purifiers for compressed gas

Double-deck screening conveyor

Self-emptying container

Fines eliminator

Bulk storage tanks

Environmental test chamber (Enviratrol Model UCH-300)

Chemical process pumps (Khemline)

Vibratory feeders

Induction sulfur apparatus

Safety shield (Poncho)

Ram-type valve

High temperature solenoid valve (Model M-3V)

Nickel ball anodes and titanium anode baskets

Variable displacement piston pump (Model VI 5)

Automatic weigher

Industrial evaporative coolers

Side-entering fluid mixer (SG and SGS)

Ultrasonic liquid-vapor degreasers

Plasma torch

Industrial mixer

Centrifugal air classifier

Plastic drum and carboy pump (Model DS-P)

Mobile computer centers

Turboblowers (Series 2500, 2600, 2700)

R. P. Adams Co., Inc. Buffalo, N.Y.

Allis-Chalmers Mfg. Co. Milwaukee, Wis.

American-Standard Detroit, Mich.

Barnes Mfg. Co. Mansfield, Ohio

Bucket Elevator Co. Chatham, NJ .

Canal Industrial Corp. Bethesda, Md.

Cardair, division of Marmon-Herrington Co., Inc.

Lebanon, Ind. Conant Machine & Steel Co.

Lancaster, Mass. Corrugated Container Co.

Columbus, Ohio Davco, Inc.

Framingham, Mass. Day Co.

Minneapolis, Minn. Enviratron Co.

Burbank, Calif.

Fairbanks, Morse & Co. Yonkers, N.Y.

Feedmaiic-Detroit, Inc. Southfield, Mich.

Fisher Scientific Co. Pittsburgh, Pa.

Glas-Col Apparatus Co. Terre Haute, Ind.

Glascote Products Cleveland, Ohio

J. D. Gould Co. Indianapolis, Ind.

Hanson-Van Winkle-Munning Co.

Matawan, N.J. Hydro-Kinetics, Inc.

Zanesville, Ohio lllumitronic Systems Corp.

Sunnyvale, Calif. Mario Coil Co.

St. Louis, Mo. Mixing Equipment Co.

Rochester, N.Y. National Ultrasonic Corp.

Production Cleaning Sys­tems Division

Somerville, N.J. Plasmadyne Corp.

Santa Ana, Calif. Seco, Inc.

Goodlettsville, Tenn. Sturtevant Mill Co.

Boston, Mass. Tolco Corp.

Toledo, Ohio TRW Computers

Canoga Park, Calif. Westinghouse Electric Corp.

Sturtevant Division Boston, Mass.

Removes solids continuously from indus­trial raw water supplies

Completely automatic with capacities from 90 to 220 tons per hour

Use Vs-in. tubing

Seven models having all-bronze fittings with enclosed impellers

New design has capacity up to five times greater than conventional belts

Provides controlled temperature atmos­phere t o - 1 5 0 ° C.

Handles pressures up to 12,000 p.s.i.

Designed for screening sand, peastone, and tailings

For heavy bulk materials

Removes fines from scrap grinding systems

All-welded, vertical tanks in 25 sizes

Simulates temperatures from —300° to 350° F. with liquid nitrogen and elec­tric heaters

Designed for circulating or transferring corrosive liquids

Parts feeders and trough feeders avail­able

Performs up to 10 sulfur determinations per hour

For heating mantles when distilling flam­mable chemicals

Has glass-filled Teflon seat and ball bear­ing-mounted spindle

For air and water up to 400 p.s.i. and 250° F., steam up to 15 p.s.i. and 250° F.

Anodes are 2-in. diameter spheres; bas­kets made from perforated sheet stock

Has internal cartridge pump assembly providing high suction

Handles packages up to 10 lb. at speeds up to 300 per min.

Provide closed-circuit cooling of water, oil, air, and other fluids

Available in the 1 to 3 hp. range

Especially designed for use with Freon or with trichloroethylene solvent

Can cut various alloys as much as 1 in. thick

Combines vertical and horizontal mixing action

A 20-in. unit for laboratory use

For dispensing liquid chemicals includ­ing the more corrosive acids

Includes either the TRW-330 or TRW-340 along with input/output equipment

Designed to deliver a wide range of air volumes at constant pressure

AUG. 13, 1962 C&EN 47

PITT-CONSOL

and their derivatives

aryl mercap-tans

NOW available in I commercial quantities at attractive prices!

• . . investigate their many advantages· for these and other applications:

PESTICIDES · OIL ADDITIVES · HERBICIDES · FUNGICIDES · ORGANOMETALLICS

ΑΝΤΙ-OXIDANTS · CHAIN TERMINATORS · HYDRAULIC FLUIDS · WETTING

AGENTS · CATALYST MODIFIERS · DYES · POLYMERS · PHARMACEUTICALS

RUBBER CHEMICALS · PLASTICIZERS · FLOTATION AGENTS · SPECIAL ADDITIVES

Captive raw materials and unique refining processes enable

PITT-CONSOL to offer you these new products in commercial

volume at low cost . . . One or more may be the answer you

seek to produce your end product better for less.

Samples and technical assistance are yours for the asking,

/ P T T T - C O N S O L

191 Doremus Avenue · Newark 5, N. J. A SUBSIDIARY OF CONSOLIDATION COAL COMPANY

HIGH QUALITY ARYL MERCAPTANS · ALKYL PHENOLS · PHENOLS · CRESOLS «CRESYLIC ACIDS · RUBBER CHEMICALS

Standard line of in-line filters is of­fered by Microporous Filter Div., Circle Seal Development Corp., Ana­heim, Calif. Three basic models to accommodate pressure ranges from 300 to 6000 p.s.i. are available. Each model is offered in aluminum or stain­less housings with epoxy, braze, or weld bonds. Micron ratings on all models are available from 2 to 200 nominal. In addition to the standard line, Tee Type filters are also available as standard and incorporate the same material and rating options as the in­line filters. Ε 33

Combustion supervision controls have been developed by Protection Con­trols, Inc., Skokie, 111. In the event of a flame failure or other fault, the controls automatically shut off fuel supply to prevent explosion hazards. A 5000-volt ignition transformer with push-button and flame-on indicator light is included. The controls are ready to connect to various external devices, such as pilot and main valves, auxiliary interlocks. Costs range from $140 for a 1-burner unit without timer, to $255 for a 2-burner unit with timer.

Ε 34

Mixer for laboratory mixing work is offered by the United States Stone­ware Co., Akron, Ohio. The unit is capable of handling loads up to 100 lb. in each mixing attachment and consists of a double-end-shaft power unit. Designed for either floor or bench mounting, the welded steel power unit is powered with a 1 /4-hp. motor. Mixing attachments are quickly and easily secured to the shaft.

Ε 35

Dehumidifier type hopper heater-dryer which can help eliminate rejects caused by moisture in materials is being introduced by Ball & Jewell, Brooklyn, N.Y. Positive heat control of temperatures from 150° to 245° F. is regulated by a simple thermostatic control. With a 2500-watt heater unit and V3-hp. motor, the Model A-12 dehumidifier type heater-dryer can precondition from 75 to 100 lb. of material per hour. Ε 36

An interchangeable bimetal thermom­eter, Tamper Roof, that can replace standard 5-in. scale liquid-in-glass types without changing existing sock-

48 C & E N A U G . 13, 1962

ets is available from Weksler Instru­ments Corp., Freeport, N.Y. The bi­metal instrument costs no more than an equivalent 5-in. scale size glass industrial thermometer, the firm says.

Ε 37

An instrument for reading pre­recorded graphical data and assisting in the control of production operations is available from F. L. Moseley Co., Pasadena, Calif. In addition to the six chart transport speeds of 2, 4, 8, 16, 26, and 32 in. per min., the Model 231 reader features an alarm circuit and relay mechanism which is acti­vated when tracking errors are de­tected. The relay contacts may be used to control external equipment or to stop the chart drive, the company says. Ε 38

Electrically heated drum warmer, de­signed for fast heat-up of the contents of standard 55-gal. drums, is offered by S ta-Warm Electric Co., Ravenna, Ohio. Industrial compounds, such as wax, grease, heavy oils, and asphalt, can be heated to a preflowing viscosity while still in the drums. Variable dial thermostat controls temperatures in a selective range of 150° to 450° F. The inner tank is 36 in. deep. Units are available in 18 kw. with either 240 or 480 volts. Ε 39

Further useful information on °keyed Equipment items men­tioned is readily available . . .

Use handy coupon on page 50

August 13, 1962

Readers' Information Service Use this handy self-mailer to obtain further information or literature. Simply mark the items desired, fill out the information requested, clip the coupon, fold, staple, and mail.

(Please fill out coupon completely.)

Name:

Company:

Street:

City Zone State

Your Title:

Ο u. City

Your Function (Check One): 1 Π Corporate Management 2 • Technical Management 3 • Product Research 4 • Product Design & Development 5 • Process Research

6 Π Process Design & Development 7 Π Production—Processing 8 Π Purchasing 9 Π Analysis—Testing

10 Π Consulting

CLIP COUPON—Fold along this line—fasten (staple, tape, glue) MAIL

Yourindustry: \\ [-] Petroleum Réf., Asphalts, 1 • Construction Lubricants 2 Π Food & Kindred Products 12 Π Rubber; Plastic Products 3 Π Textile Mill Products 13 Π Leather & Leather Products 4 Π Paper & Allied Products 14 Π Stone, Clay, & Glass Products 5 • Printing, Publishing, etc. 15 Π Primary Metal Industries 6 Π Chemicals & Allied Products 16 Π Fabricated Metal Products 7 Π Plastics; Synthetic Resins 17 • Machinery & Equipment 8 Π Drugs 18 • Transportation Equipment 9 Π Soap, Detergents, Cosmetics 19 Π Instruments

10 • Paints, Varnishes, etc. 20 • Education

For details and specifications, write your local dealer . . . or:

V O L A N D C O R P O R A T I O N

Dept. 623, 27 Centre Ave., New Rochelle, Ν. Ύ.

with the

answers! No matter what your process problems may be... when you want information on chemi­cals and raw materials fast, turn to CHEMICAL MATERIALS CATALOG first. It's always right at your fingertips-ready with the answers. CMC is indexed five ways to help you solve your problems. Consult it often . . . over 500 pages of detailed data are "at your service" all year long.

CHEMICAL MATERIALS CATALOG REINH0LD PUBLISHING CORPORATION 430 Park Avenue, New York 22, Ν. Υ.

A U G . 13 , 1 9 6 2 C & E N 49

Famous

WHY ante up a mint of money for a more elaborate balance . . .when this popular Voland model #220-0 will do every kind of laboratory weighing . . . and costs only

$278! Only Voland features the