Document MYvdYoQrG6Yvq1J0zdvmGO9L

August 11# 1955 (y$ / Dr. Joeeph F. Treon Ualverelty of Cincinnati The Kettering laboratory College of Medloine--Ides Avenae Cincinnati 19. Ohio Dear Joet Thank you for your letter of-August -SLto &nmt requesting tonlelty data an Pydreul 15$^ hail la on vacation this month s^r-S-en-hsasrlliig sone of his anil. Vt have not done any anlnal tonicity work with Pydreul 150* Ve have felt that the oonpeeltiea la sueh that this formulation would be as nan*' hazardous to use as Pydreul F-9. For your infoxwatlon only, and atrietly confidential, Pydraul 150 la approximately TOJf Sontlalaer l4lp 23% Aroelor 124S and 7$ Aorylold 794 (a poly* , methacrylate eater). {Z would appreciate your ecanaata a to whetbar er j not we ore correct In oasunlag that thin aatarial / weald be an safe to use ae Pydreul F*9 in staler \ applications. Sincerely, 8PVt5 liner f. bhaalar Assistant Director Nedioal Department OSW 01853? STLCOPCB4005081