Document GKXLEzkayLgMvXJzeOdOqM5dV

' KFGoodrieh INTER-ORGANIZATION CORRESPONDENCE Distribution FROM C.A. Daniels SUBJECT FIELD POINT OR DEPT Si BLDG NO FIELD POINT OR DEPT & BLDG NO ' DATE YOUR LITTER DATE THIS LETTER 10-23-91 SUBSTITUTION OF METHYL-TIN FOR BUTYL-TIN STABILIZER Sally Mathers has referenced, in a report issued earlier this month, some early 1970's based BFG work which showed certain methyl-tin stabilizers may pose a volatiles issue when compared to butyl-tin systems. Since that time, stabilizer compositions have changed somewhat, and so as we move towards using more cost-effective methyl-tin systems, we need to be aware of the latest information. Attached ar^three)articles written by Dr. Karl Figge, of the European research institute NATEC. As forwarded by Tom Kugele of Morton International, these publications attest to the opinion that methyl-tin stabilizers can be used with a wide margin of safety. This should give us more confidence that this substitution can be made with a minimum of issues. Distribution F.C. DeWolf J.L. Dorsch B.M. Hendrix R.C. Kaminski D.L Kickel S.J. Mathers L.M. Maresca J.H. Muhs A.S. Pazur cc 22138013 wp_cad:subr 8FG-4956-E 11/80 LITMO IN U BFG19031