Document G5j4QdykDJQmpb6OOQ391jzEn

INTERNAL CORRESPONDENCE i. CHEMICALS AND PLASTICS * P. O. BOX 8361, SOUTH CHARLESTON, WEST VIRGINIA 25303 t* (nm) avium iwMim Dr. D. O. Westerberg Union Carbide Corp. Food Science Institute 6830 W. 65th St. Chicago, Illinois 60638 Copy To Mr. R. A. Bleidt (3) Dr. J. J. Brezinski Mr. R. J. Banna Mr. J. B. Johnson May 31, 1974 Originating Dpt. Research and Development ** Vinyl Chloride Analysis: PVC resins and films Dear Duane: This letter will confirm our telephone conversation of" May 29, 1974, concerning the vinyl chloride monomer analysis which I reported to you. The vinyl chloride analyses 'are essentially completed; however, there will be some delay in getting the vinylidene chloride results. As of yet we do not have a satisfactory method of analysis to determine residual vinylidene chloride in dry r sins and films. In the case of a latex sample, presently, we inj ct th "neat'* sample into the gas chromatograph, thus getting both vinyl chloride and vinylidene chloride simultaneously. Tabulated in Table I and attached to this letter are th vinyl chloride results. As can be seen from these data, all of the samples contain 2 ppm vinyl chloride or less. The limit of detection for the method is 1.5 ppm with an accuracy of 0.5 ppm. If I can be of further assistance don't hesitate to call. Tours very trulj AEG/dk Attachment N tebook Reference 14AEG114 . (Gabany, Jr. OCT 0 2'975 g ngiHEElSU*- ucc 068375 > TABLE I VINYL chloride analysis of vinyl co-polymer resins and FILMS FROM D. 0. WESTERBERG Sample 4-26-A (a) 4-26-B (a) 4--26--C (a) 4-26-D (a) 4-26-E 4-26-F 4-26-G 4-26-H (b) Vinyl Chloride, ppm <1.5 <1.5 2 <1.5 <1.5 <1.5 <1.5 <1.5 (a) resin samples, all others are films (b) multilayer film - not totally soluble in THF ucc f l 068376