Document jm01B6OdXoE15vVLMng6nL0LN

BUSINESS CONFIDENTIAL PRELIMINARY INFORMATION SUBJECT TO LATER VERIFICATION OR REVISION V'9\ INFORMAL REPORT project NO.i 328K10 datei June 12, 1973 author(s)i H. T. Bias R. A. B1 idt POLY(VINYL CHLORIDE) RESINS: ANALYTICAL DETERMINATION OP RESIDUAL VINYL CHLORIDE MONOMER IN "PVC" RESINS By use of a Standard Testing, method, WC-326-G, developed in the Texas City Resins Laboratory by J. L. Hockersmith, a number of samples of poly(vinyl chloride) resins and 30 perc nt solutions have been analyzed for residual vinyl chloride monomer by flame ionization gas chromatography. The FDA has recently lifted the approval of the use of blow-molded bottles made from PVC as containers for alcoholic beverages (chiefly liquor), based on the reported observation of "leaching of up to 20 ppm of a chemical called vinyl chloride monomer from the plastic bottles into distilled spirits stored for one year." Eight possible contaminats have been checked for retention times relative to the vinyl chloride peak with none giving any interference. When the vinyl chloride peak was small there appeared a shoulder on it which made it difficult to deter mine which peak was actually the vinyl chloride peak. A word of caution as to the validity of these results should be given here. The results are listed as "apparent vinyl chloride monomer" values. The peak that is being measured is in the position on the gas chromatogram for vinyl chloride. However, this does not make certain that what we are calling vinyl chloride really is vinyl chloride. Such confirmation is virtually impossible in the concentration ranges with which we are working. At the present time, we are working on several approaches to making th vinyl chloride identification more certain and will report progress at a later time* A table is attached giving the amounts of vinyl chloride monomer found in the samples analyzed. The bottom portion of the table lists the results for the resins in solution. For analysis of these solutions, no dilution -was required; the samples wer run as received. On the other hand, the solid resins were dissolved in tetrahydrofuran (1 part resin to 9 parts THF) before RESEARCH AND OEVELOFMENT DEPARTMENT CHEMICALS AND PLASTICS UNION CARBIDE CORPORATION SOUTH CHARLESTON, WEST VIRGINIA ucc 061179 BUSINESS CONFIDENTIAL 328K10 2 introduction into the gas chromatograph. Accordingly, results obtained from the gas chromatographic scans of the diluted samples must be augmented by the dilution factor. This has been done for the results reported. Notebook Reference: 3-HTB-125-126-127-135 HTB:jes H. T. Bias UCC 061180 APPARENT VCM CONTENT OF SELECTED PVC RESINS Resin Description Approximate Vinyl Chloride Monomer VYHH - B1 4860 VYHD - B-951 VMCH - B-649 VMCC - 202 VMCA B1 1 B1 29 VYLF - B1 A570 1 year 1 year 1/2 year 1/2 year 3 months 3 months 1 year 25 25 25 25 25 25 44 VERR - B1 4 B1 IS VROH - B1 2 2 years 3-4 months 1 year 25 33 33 VYHD - 5/18/73-515 production VYHH - 5/18/73-515 Produc- tion VMCH - 5/18/73-515 Produc- tion Fresh Fresh Fresh 25 33 43 Competitive Resins FPC-470 - Lot 70498-E FPC-454 - Lot 70419-U Geon 222 - Lot 1931 ACVX - (France) AXCM-3 Geon 222 Geon 427 Geon 443 New Sample New Sample 1 year 6 months 1-2 years 1-2 years 1-2 years 9 216 476 25 93 50 73 44 Resins in Solution (no dilution required for analysis) VYDS - B-532 VYDS - B-545 VYDS - B-555 VYDS - B-535 VYDS - 072 - 515 Production 1/23/73 3/12/73 4/23/73 2/1/73 5/18/73 7 7 2 6 6 ucc 061181 DISTRIBUTION Supervisor: Mr. R. A. Bleidt (3) Project Manager/Technology Manager: Mr. R. J. Hanna Associate Director: Mr. J. B. Johnson Director: Dr. T. T. Szabo Mr. R. L. Anderson, 511 Mr. G. P. Bigelow, NYO-33 Dr. J. J. Brezinski, 511 Mr. A. H. DuVall, 511 Mr. M. E. Eisenhour, 515 Mr. W. S. Engle, 511 Mr. C. E. Pry, 514 Mr. R. E. Gulick, NYO-32 Mr. J. L. Hockersmith, 515 Dr. C. W, McGary, 511 Mr. Q. Quick, 511 Mr. D. E. Richardson, 515 Mr. R. N. Wheeler, 514fc m Dr. N. L. Zutty, NYO-32 ucc 061182