Document X7gazprJ59RNBx9YkmG201q6R

S? i > S' Dr. A. V. Downes Union Carbide plastic* Company Room 1103 30 East 42nd Street Dr. V, B. Aofcart Dr. H. F. Smyth, Jr. Mr. V. c. Quinby Mr. 0. T. Sorlba Kay 22# 1959 "Food grade" Cant Vinyl Fllae Dear Dr. Downeai Ve are In receipt of the formulations of these films. A copy of your letter is being sent to Henry Smyth for Ms comments also. 1 think the time has come when we shall need extrac tion studies dona on the majority of suoh films in order to have proper data to present to the Food and Drug Administration* Ve would comment as follows on these filmsi (1) VBAC-9123 Although there is only 0.20 of sine stearate in this, the Food and Drug Adminis tration would insist on extraction studies Stowing that less than 30 parts per million f sine is extracted, they have done this in the past. Z am not particularly concerned about the other constituents. (2) VBAA-912A Same comments as for #1. (3) VBAC-llAg The only questionable product in the mixture Is Paraorll CV which Is a butadiene acrylonitrile rubber. The question Is raised beoause we understand it has an unacceptable ucc 063606 Dr, A. W. Downes -2- Kay 22, 1959 antioxidant In It, I believe Dr. Aokart trcoked this down. In 1948 we did get a letter of accept ance froib the Food and Drug Administration for a similar formulation containing perbunan 35NS90 - 385^ Instead of the Paraoril CV. (4) VBAA-9U3 Same remarks would apply as for #3* (5) VBA-3Qg There would appear to be no objection to this formulation. Very truly yours. Thomas V, Male, M* D, ah MEDICAL DIRECTOR ucc 063607 ucc 063608