Document vQmrMwkEQNXjx6Dwm4eROGVb

GRACE Organic Chemicals Division W R. Grace & Co. 55 Hayden Avenue Lexington, Mass. 02173 (617) 861-6600 December 21, 1977 Dr. Richard Thompson Stanford Research Institute 1611 M. Kent Street Rosslyu Plaza Arlington, VA 22209 Dear Dr. Thomson; For your examination is attached a draft copy of the Health and Safety Work Practice guidelines for vinylidene chloride monomer. This document was recently developed by the Vinylidene Chloride Technical Panel of the Manufacturing Chemists Association. Also, please note the inclusion of a method for the determination of vinylidene chloride in air as validated by "Round Robin'* testing. Sincerely youre. V. Ronald Hoepes Chairmen MCA VdC Workpraeticee Subcommittee Me. L. C. Henschel/MCA COPY