Document jx7xGOykJgLmOj9BZbawLzDN

c&ccc H.r. Robertson Bw Tork Office Dr, T.V. lal Mellon Institute May 15, 1956 VCCA-3400 fellow 523 Dear Dr, Robertsont Ibis la a comment on your letter of May 11 to Mr. J.V. Shilling on tho aboTo eubject. 1 do not auggaat any ohango In your request to him, but I think you ahould hare aoao background Information for futuro uao, test vook I had an opportunity to go over all tho 7.D.A. work on cortifiod colon. Of tho 15 out of 116 which thoy hare studied recent ly, only FDfcC follow 5 has boon found to show no eridonoo of injurious action. Some colors will bo removed from tho list of thoso pormlttod In food uso. IX&C follow 5 has tho host chanco of remaining on tho list. Therefore, when wo can ignore Immediate urgencies, It would be well to think of this oolor as preferable to some others* The r.D.A. controls load and arsenic content by testing and certifying each batch of oolor aold. Xta present conoern for hamlosenoas refers to the toxic effects of the color itself and Its enavoldabl# organic lmpurltica. Irentoally, the Act oust be changed to permit 7.D.A. to establish a tolerance for ths amount of each oolor idilch may be in food, but this Is impossible now. Tory truly Toure. ldf received MAY - INDUSTRIAL MEDICAL & TOXICOLOGY DEPARTMENT ucc 063696