NEWS EDITION
JULY 10, 1939
ii @ The A i l Purpose INDUSTRIAL DRYING A G E N T for Drying Solids - Liquids - Gases SOLiDS-UQUIDSGASESSOllDS-LIQUIPSGASESSOLIDS
1HDRIERITEHI
451
GLYCERINE DERIVATIVES FOR RESEARCH PURPOSES
G L Y C E R Y L « MONOPHENYL ETHER
Melting point 5J~5°C. Boiling point 150-5°C. @ 4 mm. Compatible with: cellulose acetate, nitro cellulose and ester gum U s e s : P l a s t i c i z e r , r a w material for resins, a n d S y n t h e s e s
**'/V/'h ft "•? I/>••.'/1 f W!! ft i i'»\ .* \\ > * v : * v * 2 Sios-s3sv&-sQinon-s A v a i l a b l e in 4 , 8 a n d 1 6 o z . p a c k a g e s
Neutral, Stable, Constant in Volume, Inert (except toward water), Insoluble in Organic Liquids, Non-disintegrating, NonWetting, Non-Poisonous, Non-Corrosive, Repeatedly Regenerative, and Low in Cost. Write for Bulletin
W r i t e for i n f o r m a t i o n o n t h i s a n d other Glycerine Derivatives.
Wo A. HAMMOND DRIERITE COMPANY YELLOW SPRINGS, OHIO
G L Y C E R I N E P R O D U C E R S ' ASSOCIATION RESEARCH LABORATORIES 9 SOUTH CLINTON STREET
CHICAGO, ILLINOIS
bath, free from dirt and foreign matter, cuts down rejections, speeds plating time, and permits a week of production without R. M . S h i e l d s , T h e D u r i r o n C o . , I n c . , D a y t o n , O h i o shutdown for cleaning. Many tanks which were previously cleaned weekly are operating on a six months' schedule. Internal heating coils had been accepted as a necessary evil in plating tanks until a perfected external heat exchanger was offered at moderate cost in corrosionresisting alloys. Modern plating baths can now be externally heated by steamactuated heaters, the usual plan being to pump from t h e tank through a quickly cleaned filter press which can De by-passed for quicker heat-up time in the morning or after the usual week-end shutdown. From this point the solution is handled through a noncorrosive and noncontaminating Duriron heater and so back t o t h e tank. Suitable controls o n t h e heat exchangers maintain the desired temperature within =*=1° F. Undesirable agitation, stratification, and dead spots in the bath are prevented by drawing from and discharging through perforated Duriron pipe laid the entire length of the tank. These heat exchangers have also been used as coolers with a second unit operating in parallel as a heater. Such equipment improves general working conditions in the plating room and keeps equipI n s t a l l a t i o n o f D u r i r o n p u m p s , h e a t e x c h a n g e r s , valves, pipe a n d fittings ment readily accessible. Solution losses d u e to overnight siphoning through leaky HE improved type of plating work beOptimum plating temperatures are now internal coils are eliminated and t h e tank ing done today, the higher current assured through the use of external heaters, volume is available for production work. densities now in use, and improved throwautomatically operated. I t has been A typical installation is shown in t h e ing power and thinner deposits on many shown in practice that better work can be photograph. Such installations are operattypes of work necessitate better control done and heavier schedules maintained ing today with distinct savings t o t h e of plating solutions. Improved practice by periodic or even continuous filtering plater on standard nickel, bright nickel, demonstrates the advantages of closer of the solution, more particularly the chromium, tin, copper, etc. Bonderizing watch on the bath make-up, such as can bright nickel solutions so widely accepted and anodizing installations also use equipbe accomplished by modern pH apparatus. by t h e modern plating plant. A clean ment of this general nature to advantage.
Tendencies in Modern Plating
T
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-0L000SE DERIVATIVESare now available for Laboratory Commercial Research
KODAK P 4101 Aluminum iso-Propoxide (Pract.) 500 g. $12.50 D P 4808 5-Amino-2-naphthol Hydrochloride (Pract.).. 100 g. 8.00 C 4815 2,4,6-Collidine BP 167-169° 500 g. 6.00 D 4814 2,3-Lutidine B P 158-160° . 500 g. 6.00 D 4820 2,6-Lutidine B P 141-142.5° 500 g. 6.00 D © Write for List No. 30, *'Eastman Organic Chemicals"
Eastman Kodak C&, Chemical Sales BK Rochester, I I . Y.
and
Announcing SLUCOSE PENTAPROPI0NATE (B.P. 205°C. at 2 mm.) Soluble in Chloroform, Ethanol, Methanol. Insoluble in Water. Write for prices and bulletin covering other Glucose Derivatives.
—mm
PRODUCTS mimm Nezv Products
COMPANY—
Division
17 BATTER* PLACE, NEW YORK. N. Y.
