Document wDXQq26ap8jQDgKax3DmGxqQQ

FILE NAME: Drywall Spackling Compounds (DWSC) DATE: 1975 Aug 5 DOC#: DWSC011 DOCUMENT DESCRIPTION: Memo from Mt. Sinai School of Medicine - Drywall Joint Taping Compound Samples Containing Asbestos ^ MOUNT SINAI SCHOOL OF MEDICINE ^ of The City University of New York To: Dr. Irving J. Selikoff From: Dr. Arthur N. Rohl Dot,: August 5, 1975 Subject: The five samples of dry-wall joint taping compounds submitted by the International Brotherhood of Painters and Allied Trades in July 1975 have been analyzed by x-ray diffraction, optical and electron microscopy. The accompanying table of results shows that four contain asbestos, including tremolite and chrysotile. Three of the five compounds are in paste form with labels indicating a vinyl-type base. In order to determine whether vinyl chloride may be released during application of the compounds, gas chromatography and mass spectrometry were used to analyze for vinyl chloride. In addition to the three paste compounds described herein, four others in vinyl-and latex-paste form were also analyzed. Results were negative for vinyl chloride. cc: S. Frank Raftery John Pecoraro C - ft - \ - 3 SM MSH 20M 74 f 1 i 5Y -< 5 PLAINTIFF'S EXHIBIT RESULTS OF MINERALOGICAL ANALYSIS OF /ETAPING AND SPACKLING COMPOUNDS SUBMITTED BY J. PECORARO, JULY 1975 Handi-Patch QUARTZ CALCITE dolomite Sterling Ready Mix vinyl joint cement CALCITE MICA TALC knolinite chrysotile(5-8%) trcmolite(1-2%) S-C-L vinyl taping compound CALCITE MICA TALC kaolinite chrysotile(10-15%) tremol ite (8-12%) Sterling All-purpose CALCITE MICA QUARTZ TALC kaolinite tremolite (1-2%) Synko CALCITE MICA chrysot ile(8-12%) talc Major components are In capit'al letters and substances present In lesser quantities are shown in lower case letters. Asbestos minerals,, where present, are underlined and their weight-percentage indicated. TAPING AND SPACKLING COMPOUNDS SUBMITTED BY J. FECORARO, JULY 1975 Handi-patch vinyl spackling Handi-Products Company P.O. Box 1955 Cleveland, Ohio 44106 compound (paste) S C L vinyl joint taping compound (paste) Sterling-Clark Lurton Corporation Malden, Mass. 02148 Sterling 12-Star All-purpose triple use joint cement and texture compound (paste) Stebbins & Roberts (S R R Inc.) Little Rock, Fort Worth, Oklahoma City cement topping Sterling 12 Star Ready mixes all purpose vinyl joint cement (dry) Stebbins & Roberts (S & R Inc.) Synko Triple duty joint compound The Synkoloid Company 2945 E. Maria Compton, California 90221 (dry)