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Solubility Measurements on the Systems A m m o n i u m , Sodium, a n d Potassium Perchlorate a n d A m m o n i u m , Sodium, a n d Po­ tassium Chloride. P. R. Marshall and Herschel Hunt Thermal Conductivity of Equi­ librated Mixtures of H 2 , D „ and HD. C. C. Minter and Sigmund Schuldiner Effect of Molecular Structure on Burning Velocity. G. J. Gibbs and H. F. Calcote

217

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Thermodynamic Data for Carbon Dioxide at High Pressure a n d Temperature. P. E. Liley

238

Measurement of the Thermal Properties of Carbonaceous M a ­ terials. J. D. Batchelor, P. M. Yavorsky, and Everett Gorin

241

Isomerizction Equilibria. The C 2 H 6 S, C 3 H 8 S, and C 4 H 10 S AIkane Thiols and Sulfides and the M e t h y l t h i o p h e n e s . D. W . Scott, G. B. Guthrie, J. P. McCullough, and Guy Waddington

246

Heat of Solution of A m m o n i a in Ethyl Alcohol at 2 5 ° C. J. R. Morton 25 1

PART II. PHYSICAL PROPERTIES AND EVALUATION OF COMPOUNDS AND MATERIALS

Investigation of Heat Stabilizers for Nitrocellulose Film. G. P. Sollott and Fred Einberg

266

Apparent Molar Volumes of Alco­ hols in Dilute Aqueous Solution. D. M. Alexander

Soluble Copolymers of Diallyl Monomers. W. H. Schuller, J. A. Price, S. T. Moore, and W. M. Thomas

273

Safe Processing Curing Systems for Viton Fluoroelastomers. A. L. Moran, R. P. Kane, and J. F. Smith

276

Viscosities of Benzene-Methyl Ethyl Ketone Systems. A. J. Teller and T. J. Walsh

279

Viscosity of Nitrogen, M e t h a n e , Ethane, and Propane at Ele­ vated Temperature and Pres­ sure. J. D. Baron, J, G. Roof, and F.W.Wells

283

Estimation of Interfacial Factors of Surfactants. Mankowich

252

Energy A. M. 254

Effect of Fluorinated Refrigerants on Cured Polyester Resins. Jo­ seph Gaynor and G. W. Blum

257

Properties of Urethane Foams Re­ lated to Molecular Structure. R. E. Bolin, J. F. Szabat, R. J. Cote, Elaine Peters, P. G. Gemeinhardt A. S. Morecroft, E. E. Hardy, and J. H. Saunders 261

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Copyright 1959 b y t h e American Chemical Society

The American Chemical Society assumes no responsibility for the statements and opinions advanced by contributors to its publications. Views expressed in the editorials are those of the editors and d o n o t necessarily represent t h e official position of t h e American Chemical Society. Subscription rates 1959: members, 1 yr. $6,00; nonmembers, $12.00. Postage t o countries nor in the Pan-American Union $1.20 yearly; Canadian postage $0.40 yearly. Single copies: current issues, $3.00. Claims for missing numbers will n o t be allowed if received more t h a n 60 days from d a t e of mailing plus time n o r m a l l y required for postal delivery of journal and claim. N o claims allowed from subscribers in Central Europe, Asia, o r the Pacific Islands o t h e r t h a n H a w a i i , or because of failure t o notify the Circulation Department of a change of address, or because copy is ••missing from files." Published quarterly b y t h e American Chemical Society, from W a s h i n g t o n , D, C. Executive Offices, Editorial Headquarters, and Circulation D e p a r t m e n t , 1155 Sixteenth St., N . W , Washing­ ton 6, D . C. Advertising Office: 430 Park A v e . , N e w York 22, Ν. Υ. Branch Editorial Offices; 36 South Wabash Ave-, Chicago 3, III.; 718 Melrose Bldg., Houston 2, Tex.; 2 Park Ave., N e w Y o r k 16, N . Y . ; 703 Mechanics" I n s t i t u t e Bldg., 57 Post St., San Francisco 4, Calif.; Bush House, A l d w y c h , L o n d o n . Second-class mail privileges authorized at Washington, D. C. C H A N G E O F ADDRESS: Notify Circulation D e p a r t m e n t , American Chemical Society, 1155 Sixteenth St., N . W . , W a s h i n g t o n 6, D. C. Such notification should include b o t h old and new addresses and postal zone number, if any. The American Chemical Society a l i o publishes: In­ dustrial and Engineering Chemistry, Analytical Chemistry, Chemical and Engineering News, Chemical Abstracts Service, Journal of the American Chemical Society, TA* Journal of Physical Chemistry, Journal of Agricultural and Food Chemistry, aod The Journal of Organic Chemistry. Rates on request.

APPLIED JOURNALS, ACS 1155 Sixteenth St., N.W. Washington 6, D. C. Director of Publications, C. B. Larrabee Editorial Director, Walter J. Murphy Executive Editor, James M. Crowe Production Manager, Joseph H. Kuney JOURNAL OF CHEMICAL AND ENGINEERING DATA Editor, Will H. Shearon, Jr. Associate Editor, W. Albert Noyes, Jr. EDITORIAL HEADQUARTERS WASHINGTON 6, D. C. 1155 Sixteenth St., N.W. Phone Republic 7-3337 Teletype WA 23 Associate Editors: G. Gladys Gordon, Stella Anderson, Katherine I. Biggs, Melvyn A. Kohudic Assistant Editors: Robert J. Riley, Robert J. Kelley, Ruth M. Howorth, Eugenia Keller, Sue M. Solliday, William H. Gay, Malvina B. Preiss, Ruth Reynard

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