Document JrXKooozV99YJe3dnzJJVJNpZ

Doooabor 12, 1952 Dr. C. C, DoWltt 201 Olda Hall Klohlgan Stato Collogo Kut Unla|| Mlahlgan Mar Siri At tha raquaat of Dr. 2. V. Hum, wa uv sanding uadar saparats erar flra pound awaalaa oaoh or two typoa lltharaaa aultablo for latox oalat. Porwollth w-380 la a watar wattlag ltthopo&a aoaalfiaally daalgnad for latoz sndrwain aaalaiaa palata. Tfco watar watting shar-aatarlatloa ara attained tjr aaoalal aurfaaa trsataaat during tho nsnufaaturing proaaaa. It dooa not acatain a watting agaat or a disparting agont. It la low la aolufclo salts, aspaatally dlvalaat and trlralaat oatlrna, wtiloh aftaa Kara a dalatarlaua affaat an tha stability of tho latox anulaiwa. Poraollth W-fa21 la goita aiallar to *-320 azaapt that tt la dosi goad for uaa wkara a aiateaa mount of allllng la to to daaa la tha praparatlaa of tha latox point. It daaa aat ocatala a wotting agaat, tut dooa contain a aatar-aolahla dlaporalag agont. In aawo latox paint foraalatloaa solubls salta do dotroot from aaahabllltgr (osar widar saruVblag tarta). If thara la aagr further information jros daalra ahaut thaaa aamloo, plaoaa do aat haaitata to naba inquiry. 7ary truly youra, 7B SHPOmHHlAUie 00. P37ff o t Dr. J. 7. Suaw F. C. Variola tflaoral Hraduata Laboratory 0007-SWP-043795 N23264