Document qad5vy2dM92Q9zyKbQJ9NgGDM

c&ccc Dr. H. F. Robertson Bakelite - STO Mr. V* J. Horn** Dr. V. Hale 6 * e- * Mellon Institute Retraction Test* on Rigid Vinyl Compound* Dear Dr. Robertson: The idea of an overlay to reduce extraction of stabiliser tgr foods is Interesting. However, I agree with Dr. Sale that Mr. Houska's June 12 letter does no none than present the idea because his analytical Methods sere not aufficiently interesting. The F.DJl. ean have no valid objection to a aterial if aooe of the ingredients reach the food. However, in the ease of cadaiiaa and barlua Ingredient# they sill have to be shown that extraction is ail {shoot 0.01 p.p.a. la elminted foods) before they will aocept a formulation. ary truly yours. ucc 063680 RECEIVED 4! ic 2 1956 INDUSTRIAL MEDICAL & TOXICOLOGY DEPARTMENT From th* Desk of THOMAS W: NALE, M. D. PAX 070 VV-^- If*11 Tfc ^vmTVuJL^ ucc 06368'' FOR INTERNAL CORRESPONDENCE BAKELITE COMPANY DOS RIVER ROAD, BOUND BROOK, NEW JERSEY To (Nomo) Mr. H. T. Roborteon Company Bekellte Conpaay location Sew York, Mi Tork (2) 9 K. 41 Originating Dpf. June 12, 1956 -I - v. Antwring Intftr Copy to Mr. I, K* R/raa Mr. %, L. Carpenter Mr. to D* Dexter Subjoct Tils i Xxiraeiloa Tests en Rigid Vinyl Compound 5.125 Mr. t. t Carpenter, seas tlas ago. suggested that a vinyl film suitable far food packaging could be aada by taking a stock ooapeund and laalnatlng to It a thin vinyl flla which was approved for food packaging applications This noa-ttttle file would sarvo as a harrier to the algratlon of potential!/ Injurious substances from the base ooapeund Into foodstuffs which wars packaged In the laalnated stock. The food, of oourse, would he la contact with the surface consisting of the non-toxic flla. Iou subsequently Indicated that extraction tests would he needed to verify the applicability of a laalnated stook of this typo to food packaging applications. locerdlngly, a laalnate of the two senpeunde shown on the data sheet was pre pared, Snail cups wore vacuua famed fron the laalnate with the non-toxic file eonprleing the Interior surfaoe. Various sups were then filled with solutions of 15 sodlua hioarhonete, acetic sold, and Wasson Oil. These solutions were loft la the oups far thirty days at 23C, The solutions ware then analysed far harlua and oadnlua. Control analysis wore run en solutions which were stored under the sane conditions la caps node fron the base ooapeund only. Voder the conditions of the tost, the extracts fron both the control and laalnated cups showed a harlua content of less than 1.0 ppa and a oadnlua content of loss than 0.5 ppu which represent the Units of sensitivity of the analytical netheds. These extraction tests provide sene preliminary data en the navinun sontealnetlea te he expected la faede la contact with rigid visyls stabilised with harlua and eadalua soapa. If you believe that additional work along those line* la worth while. wo shell b# pleased to consider any suggestions for additional analysis here/vf the Carbide sad Oarhen Ohealeals Cowpany Laboratories. If, on the other hand. It is sonsldsrod advisable to avoid the wee af barlua and oadnlua salts Under any elrsunstanoes, aa further work will bo doos. Wtfjn Att. y.J i'Uvdce- . o. Senate ucc 063682 pATi SHEET Baaa Stock Coatponod - 1D4-20$2 PlfOfc.15 QZHA Plexol E2H Paraplex 0-62 v#r5&V: 30.12 *-y-^V4 i. 3*00 Ba/td Laurate Synpron 450 (trliaooctyl phoaphita) *75 .75 Trisagnaslua phoaphata .50 Carbon Blaok 100.00 yon-Toxlo Orerlar - YBAA-9023 E4tW*l 003 mi 73.50 D0P 24.00 Paraplax 0-62 2.00 Aeroamx C .17 Durocar lax ____JI 100.00 paalTtleal Mathflda Sarins analysed tnrbldlnatrlcally aa barIns anlfata. Cadalns analytad polar!graphically aa aadalna Ian. eight ad Teat Onp close ad That Selution* la Contact sith Capa 2.6 graaa 100 si. ucc 063683