DOW CORNING CORPORATION - Analytical ... - ACS Publications

DOW CORNING CORPORATION. Anal. Chem. , 1952, 24 (9), pp 4A–4A. DOI: 10.1021/ac60069a703. Publication Date: September 1952. ACS Legacy Archive...
1 downloads 0 Views 160KB Size
4A

ANALYTICAL

CHEMISTRY

C O N T E N T S , continued NOTES, Contd.

Rapid Method for Determination of Small Amounts of Zirconium R. E. Oesper, R. A . Dunleavy, and J . J . Klingenberg New Color Reaction for Steroids with Perchloric A c i d Henry Tauber Alkalimetric Method for Estimation of Cadmium and Zinc

1492 1494 1495

M. M. Tillu

cA 4ά tf P'» Λ DOW

OF CORNING

ANTIFOAM A" (Ù The housewife wants "oodles of rich suds" but the detergent manufacturer wants production economy. Alert processors get both with a pinch of Dow Corning Antifoam A. As little as 2 ppm controls foam in animal or vegetable oils, detergency unaffected. φ That kind of performance is why you'll find that this remark­ ably effective silicone is the most economical defoamer you've ever used. Bland and non-inflammable, its high order of chemical and thermal stability prevents it from contaminating or reacting with most foaming media. £) Easily dispersed in a wide vari­ ety of solvents, Antifoam A is ef­ fective in most aqueous foaming systems. Where solvents cannot be used, specify Antifoam A Emul­ sion. Containing 30% Antifoam A by weight, this stable, easily dis­ persed suspension may be intro­ duced directly without the use of carrying agents. ÇJIf high production costs are pinching your profits, pinch them back with Antifoam A. Evaluation samples available upon request. Simply fill in and mail the coupon today.

See. fob IfotfUelff DOW

|

CORNING

Send for Free Sample

SILICONES DOW

CORNING CORPORATION Dept. CC-21, Midland, Michigan Please send sample of { ) Antifoam A ( ) Antifoam A Emulsion Name AddressCitv DOW

CORNING Midland ·

CORPORATION Michigan

Determination of Water by Karl Fischer Titration in Presence of Ferric Salts . . . 1496 A . H . Laurene Factors Affecting Stability of Aqueous Potassium Ferrate(VI) Solutions . . . . 1497 W . F. Wagner, J . R. Gump, and E. N . Hart Rapid Approximate Method for Determination of Moisture 1498 R. H . Cotton, W . A . Harris, L. P. Orleans, and Guy Rorabaugh Spectrophotometric Determination of Mixtures of Ortho and Para Alkylated Phenols 1500 Harold Hart Alkalimetric Determination of Phosphate 1 501 B. H . Kindt, E. W . Balis, and H . A . Liebhafsky Colorimetric Determination of Silver with p-Dimethylaminobenzalrhodanine . . . 1503 G . C. B. Cave and D. N . Hunie All-Purpose Capillary Viscometer 1 505 J . F. Johnson, R. L. LeTourneau, and Robert Matteson Determination of Kerosene in Kerosene-Gasoline Mixtures 1508 J . E. Bridges Equilibrium Constants in Interaction of Carbonyl Compounds with Hydroxylamine 1 509 Nathan Sharon, and Aharon Katchalsky Modification of Norman-Jenkins Method for Determination of Cellulose . . . . 1510 Emmett Bennett Chemical and Cryoscopic Analysis of β-Propiolactone 1511 W . P. Tyler and D. W . Beesing General Qualitative Test for Epoxides 1514 Richard Fuchs, R. C. Waters, and C. A . Vanderwerf Flame Photometric Determination of Sodium in Salts of Organic Acids 1514 S. B. Knight and M . H . Peterson International Congress on Analytical Chemistry 1518 Society of Public Analysts 1524 Corrections 1455,1517 CRYSTALLOGRAPHY D A T A Pseudotropine 1516 R. L. Clarke and John Krc, Jr. B O O K REVIEW 1517 ANALYST'S CALENDAR 1524 A I D S FOR T H E A N A L Y S T Atomizer for Flame Spectrophotometry 1 525 C O . Willits and J. A . Connelly Control of Cooling in Still Heads 1 526 C. S. Stokes and Murray Hauptschein Rapid Method for Titrating Tubes for Microbiological Assay 1 526 C. A . Denton and K. E. Grauel Direct-Reading Manometric Specific Gravity Apparatus 1527 F. E. Holmes Improved Atomizer for Use in Certain Chromatographic Analysis Procedures . . 1528 R. T. Morris THE A N A L Y S T ' S C O L U M N 15 A INSTRUMENTATION 23 A R. H . Muller N E W PRODUCTS 37 A M A N U F A C T U R E R S ' LITERATURE 40 A

The American Chemical Society assumes no responsibility for the statements and opinions advanced by contribu­ tors to its publications. Views expressed in the editorials are those oi the editors and do not necessarily represent the official position of the American Chemical Society. Published by the American Chemical Society, from 20th and Northampton Sts., Easton, Pa. Executive Offices, Editorial Headquarters, and Circulation Department, 1155 Six­ teenth St., N.W., Washington 6, D. C. Advertising Office: 330 West 42nd St., N e w York 18, Ν . Y. Branch Editorial Offices: Chicaso 1 , ML, 86 East Randolph St.; Houston 2, Tex., 623 West Bidg.; N e w York 17, N.^Y., 60 East 42nd St.,* San Francisco 2, Calif., 760 Market St./ London, Bush House, Aldwych. Entered es secondclass matter at the Post Office at Easton, Pa., U.S.A., February 18, 1948, under the Act of March 3, 1879, as 12 times a year monthly on the 15th. Acceptance for mailing at special rate of postage provided for in Section 1103, A c t of Oct. 3, 1917, authorized July 13, 1918. Annual subscriptions: members $3.50, nonmembers $4.00. Postage to countries not in the Pan-American Union $1.20. Canadian postage $0.35. Combination rate for Analytical Chemistry and Industriel end Engineering Chemistry: members $7.00, nonmembers $8.00. Postage for the combination: countries not in the Pan-American Union $3.90, Canadian postage $1.10. Single copies: current issues, members $0,40, nonmembers $0.50/ back numbers, prices on request, special rates to members. Claims for missing numbers w i l l not be allowed if received more than 60 days from date of mailing plus time normally re­ quired for postal delivery of journal and claim. No claims allowed from subscribers in Central Europe, Asia, or the Pacific islands other than Hawaii, or because of failure to notify the Circulation Department of a change of address, or because copy is "missing from files." C H A N G E OF ADDRESS: Notify Circulation Department, American Chemical Society, 1155 Sixteenth St.r N.W., Washington 6, D. C. Such notification should include both old and new addresses and postal zone number, if any. The American Chemical Society also publishes: Chemical and Engineering News, Industrial and Engineering Chemistry, Chemical Abstracts, Journal of the American Chemical Society, and the Journal of Physical Chemistry. Rates on request.