NEWS EDITION
MAY 10, 1936
187
Publicaions
Manufacures' Publications
Publications mentioned in these columns will be sent free, unless otherwise noted, by the firms issuing them, to readers of INDUSTRIAL, AND ENGINEERING CHBMISTBT who request them on their business stationery. I n writing it will be appreciated if you will mention INDUSTRIAL AND ENOINEERINO CHEMISTRY.
BTJELL D R I E R S .
Three general types of
Buell driers are described in this bulletin. They aie rotary drum, turbo, and fine-film driers. Manufacturers recommend the rotary drum driers for heavy minerals and certain chemical products in the drying of which direct contact with hot gases is permissible. Turbo driers are designed for the drying of materials where contact with hot Kases is not satisfactory. The fine-film driers are designed for work with liquids, semi-liquids, and pastes. One of the most interesting features of these driers is the internal "cruciform" design, which provides for opening up and turning over the material four times during each revolution.
BUELL ENGINEERING
Co., INC., 70 Pine St., New York, N . Y. CONDOR V - B E L T S .
This 4-page bulletin
explains the construction of this type of V-belt. It shows the way in which construction has been developed to meet the specific problems encountered in industrial drives. T H E MANHATTAN R U B B E R M F G . D I V . OF RAYBESTOSMANHATTAN, INC., Passaic, N . J. DAY R O - B A L L STABILIZED GYRATING
SCREEN. Bulletin 363 describes the various sizes and types of screens manufactured b y this company. The illustrations are accompanied with brief text indicating the desirability of a certain type of screen for a particular kind of job. The center spread includes a line drawing and specification table explaining construction features. T H E J. H. D A Y CO., Cincinnati, Ohio. DICALITE A I D S TO INDUSTRY.
A useful
pocket-sized bulletin not only describes the various materials manufactured from diatomaceous silica but goes into detail about the preparation of the sources of raw material and the manufacturing methods used in preparing these materials. The bulletin covers filter aids, fillers, absorbents, insulation material, and admixtures for concrete, mortar, and asphalt. T H E DICALITE Co., 20 Exchange PI., New York, N . Y. IMPROVED GASSING OF B E E T JUICES.
This
is another of the interesting series put out by this manufacturer describing successful applications of the Micromax recorders to the control of industrial operations. The progress of treating the beet juices is shown on a dial which records the pH change during the course of the operation. L E E D S & NORTHRUP Co., 4906 Stenton Ave., Philadelphia, Pa.
tric furnace laboratory equipment, using base metal heatingelements, is a distinct advance.
H E V I D U T Y ELECTRIC Co.,
Milwaukee, Wis. PATTERSON
MAGNETIC SEPARATOR.
An
informative 4-page bulletin describes the basic principle and operating characteristics of this separator. The design makes cleaning easy and there are no parts to rust or corrode. It is claimed that this separator provides the maximum magnetic strength per unit area.
T H E PATTERSON
FOUNDRY
&
MACHINE CO., East Liverpool, Ohio. T A B E R T Y P E "R" ROTARY PUMPS.
This
is a 4-page bulletin describing a line of pumps designed for handling liquids free from abrasives, such as oils, soaps, corn sirup, asphalt, and paint. The line of pumps described has a wide range of capacity. Photographs and a specification table make the bulletin complete. A steam-jacketed pump is included
in this
line.
TABER
PUMP
Co., 291 Elm St., Buffalo, N . Y.
;ika^S^id^\lie^s f ; Opalwax J . F. T . Berliner, A m m o n i a D e p a r t m e n t , E. I . d u P o n t d e N e m o u r s & Co,, I n c . , W i l m i n g t o n , D e l . AXES are chemically defined as esters of aliphatic acids and monohydric and dihydric alcohols of high molecular weight, but the term is ordinarily used to express a physical concept rather than a chemical composition. Beeswax and carnauba wax typify the general concept of waxes, although they range from liquids t o brittle crystalline solids. Liquid waxes, occurring as constituents of certain marine oils, are usually called oils and serve as high-grade lubricants. Paraffin, ceresin, and ozokerite are hydrocarbon waxes. Candeliila wax consists mainly of the hydrocarbon hentriacontane. Fats closely resemble true waxes in their physical properties; stearin, Japan wax, myrtle wax, bayberry wax, and Opalwax are, strictly speaking, fats.
W
Opalwax is a svnthetic waxlike substance developed by the Ammonia Department of E. I. du Pont de Nemours & Co., Inc., and has the following properties: P H Y S I C A L P R O P E R T I E S . T h e color of solid Opalwax v a r i e s from yellowish ereani t o t h e blue-white of s k i m m e d milk, d e p e n d i n g o n w h e t h e r i t is viewed b y t r a n s m i t t e d or r e flected l i g h t . M o l t e n , i t is clear a n d t r a n s parent. T h e fracture is conchoidal and a m o r p h o u s . I t is v e r y h a r d , c o m p a r a b l e t o c a r n a u b a wax, uniform in composition in b o t h liquid a n d solid p h a s e s , a n d free of e x t r a n e o u s m a t t e r . T h e l u s t e r is n o r m a l l y dull t o waxy, a l t h o u g h surfaces which form a g a i n s t s m o o t h chilled m o l d s a r e vitreous. Melting or solidification p o i n t range i s 8 3 ° t o 8 6 ° C , u s i n g A. S. T . M . a p p a r a t u s a n d p r o c e d u r e D87-22. A p p a r e n t specific g r a v i t y v a r i e s b e t w e e n 0.98 a n d 0.99 a t 2 0 ° C . according t o porosity and, w h e n cast i n rhilled m o l d s , c a n be increased t o a b o u t 1.00 a t 2 0 ° C . S t r e a k on porcelain is clean a n d w h i t e . I t is practically odorless a n d tasteless. Dielectric c o n s t a n t a t 1000 kilocycles is 10 to 14 (films on metals) a n d 7 to 8 (impregnated paper). C H E M I C A L P R O P E R T I E S . Acid n u m b e r i s less t h a n 2.0 ( m g . of potassium h y d r o x i d e required t o neutralize acidity i n 1 g r a m ) . Ash c o n t e n t is a p p r o x i m a t e l y 0.004 p e r cent. Iodine n u m b e r is less t h a n 5 (Wijs p r o c e d u r e ) . Saponification n u m b e r i s 175 t o 185 (mg. of potassium hydroxide necessary t o saponify 1 g r a m ) . An o u t s t a n d i n g p r o p e r t y of Opalwax is i t s insolubility. N o solvent h a s been found t h a t will dissolve more t h a n 2.0 p e r c e n t b y weight a t 3 0 ° C . GRAMS OF OPALWAX DISSOLVED IN 100 Cc. OK SOLVENT SOLVENT 18° TO 20° C. 33° C .
Toluene Carbon tetrachloride Carbon disulfide Xylene Acetone Acetic acid, glacial Ether Isobutanol Cellosolve Ethanol, absolute Methanol Petroleum ether Methyl Cellosolve Ethanol, 95 per cent
AIR, GAS, AND OIL. Catalog 57 is a comprehensive general catalog covering these specialties designed for industrial service. The authors have provided the maximum information with the minimum of unnecessary words. It is a highly condensed and valuable catalog for the industrial man interested in KIELEY & MUELLER,
INC., 34 to 38 West 13th St., New York, NY. M U F F L E FURNACES.
Bulletin
MU
1135
describes the line of multiple-unit muffle furnaces. These are constructed with Alloy 10 so that the range of working temperatures goes up to 2400° F. The manufacturers point out that furnace operations at this temperature in elec-
1.5 1.5 1.9 1.2 1.1 1.2 1.2 0.9 0.4 0.4 0.2 0.2 0.2 0.3
O p a l w a x is c o m p a t i b l e with all n a t u r a l v e g e t a b l e waxes, insect waxes. C a r n a u b a w a x , a n d m o n t a n w a x , b u t is o n l y slightly c o m p a t i b l e w i t h paraffin a n d ceresin w a x a n d mixes w i t h ozokerite t o v a r y i n g degrees, d e p e n d i n g on t h e g r a d e of ozokerite. It forms a soft stable gel w h e n dissolved in h o t m e t h y l o r e t h y l alcohol, acetone, p u r e o i l . a n d o t h e r solvents, a n d allowed t o cool.
KIELEY SPECIALTIES FOR STEAM, WATER,
steam specialties.
1.5 1.4 1.3 1.2 0.6 0.4 0.3 0.3 0.3 0.2 0.2 0.1 0.1 0.05
OPALWAX
(Continued on page 192)
1Q2
INDUSTRIAL A N D E N G I N E E R I N G
(Situations Wanted Continued) RESEARCH AND DEVELOPMENT CHEMIST. Several years' industrial experience on starohea, solvents, sums, casein, and other products. Ph.D. Organic. Minor work in Physics and Biology* Age 29. Protestant, Publications, Sigma Xi. Employed. Aggressive. Capable of independent research. Box 6 0 - N - 3 , Ind. & Eng. Chem.. Easton, Pa. RESEARCH CHEMIST, industrial and executive experience, now engaged in investigation and process development of metal finishes for leading jewelry manufacturer, including plating, enameling, polishing, etching, paint and lacquer applications, special finishes, with consistent record of progress. Available July. Box 2 6 N-5, Ind.
