Document mqw6Ld1Vy7gRmLYXpBLJ6nypk

REPUBLICAN OFFICE HOUSE OE liKI'IIESHNTATIVES / LANSING. MICHIGAN 4S001 TELEPHONE. 517/373.G700 PRESS RELATIONS! 517/373.3528 RESEARCH A- PROGRAMSi 517/373.0301 CONSTITUENT RELATIONS. 517/373-0117 October 5, 1971 Mr. Charles Badder Legislative Counsel Civic Affairs Division Dow Chemical Company Midland, Michigan 48640 . Dear Mr. Radder: In responding to questions by the author of the attached article, I unequivo cally stated that there was no relationship between PVC and PCB save for the common chloride ion -- an observation that could be made of salt and DDT as well. Now, however, I am not convinced" that a PVC-PCB connection does not exist. The attached citation from the Kirk-Othmer Encyclopedia of Chemical Technology, Page 295 states: ' "Chlorinated biphenyls are compatible with most of the common plastic materials and resins and are soluble in paint and varnish oils. In combination with asphalt, ethylcellulose, chlorinated rubber, Pliolite (styrene-butadiene copolymer), or other plastic materials. They are used extensively in protective coatings for wood, metal, and concrete. In combination with dioctyl phthalate, they are coplasticizers for polyvinyl chloride compositions." Moreover, Volune 10 of the Encyclopedia of Polymer Science Technology, Page 246, subject; plasticizers, property and performance with polyvinyl chloride, lists chlorinated biphenyls and chlorinated polyphenyls as two plasticizers used in the manufacture of polyvinyl chloride. I would deeply appreciate the expertise of your research staff in resolving the question of whether the plasticizers used in the manufacture of PVC pose potential health hazards. Specifically, what studies have been conducted to ascertain whether the 25 or more possible plasticizers used in PVC manufacture have noxious emission in incineration that could be toxic when breathed. My sincere thanks for your consideration in this matter. ' Sincerely GH/hh Enc. Gene Heck . Research & Programs Analyst DSW 281999 STLCOPCB4063327