Document pp9z9gVm0o50O1Vb2pX1a26xj

A 44 AKELfTE COMPANY A DIVISION or UNION CANBtOK AND CAMteN COltFOItATI*M COPY C.DSchurian/P.G#BaGnus8on H.F.Robertson August 23> 195U Mr. Byron E* Emery Birortor of Chemical Control Cutter Laboratories Fourth snC Parisar Berkeley 10, California Beer Mr* Baexyi This ulll ^>lenent our Dr* Bale's letter to you of August 16* Attached is e copy of our epedfleatlon on Bekellta Vinyl Nesin TTTr.-'-S* The important point la thip sheet le that vmr-5 le 9&*$ - 97*5? vinyl chloride, by weight. The belenoe fti oopolynerieed vinyl ecetete* Beating lose le aeesured Sa on Inert atnosp'iere (nitrogen or OO2) at 135C* vbatever voletiles night be present in this reels would be driven out in the manufacture of the fila since the processing tenuretores exceed 135C. Dared on emission spectrogrephic analysis, TINW-5 it found to bo essentially free ef hoary netals* vO hope this easmra the questions raised in the second lest paragraph of your letter of duly 20* Very truly yours, ORIGINAL SIGNED BY RECEIVED AUG 2<J-1954 INDUSTRIAL MEDICAL A TOXICOLOGY DEPARTMENT i August 16, 1954 Nr. Byron g. Emery Director of Chemical Control Cutter Laboratories Fourth and Parker Berkeley 10, California Dear Nr. Saeryt Re 1 VYNVf-5 Tour letter to the Bakellte Company has been referred to me for answering. X ahall endeavor to comment on the toxicity of this resin and ahall refer your letter to Nr. H. F. Robertson for the Information you request in the next to the last para graph. X wrote to you on August fourth regarding "Plexol" plasticiser D0P-20. Ve have not done ouch toxicity work on these resins because they are Insoluble and because they are very Inert physiologically. The Food and Drug Administration has voiced no objection to the use of this resin In food packaging, nor have they voiced any objection to its use in plastic bags such as the containers you are studying. Resin VTMW-5 Is a copolymer of polyvinyl chloride and polyvinyl acetate, also known as polyvinyl chloride-acetate. X trust that this information will prove helpful. cry truly yours. \ NKDXCAL DIRECTOR INDUSTRIAL NKDXCAL AMD TOXICOLOOT DEPARTMENT fhos. V. Male, N. D. at Blind copy to Nr. H. F. Robertson w V / \ \* '\ \\ . \ V; >\ A ,, / / /. UGC 063393