Document Evrgpa72jvzX3R0a1bqDeJq7j

June 15, 1945 M r . George Calingaert, Ethyl Corporation, 170C Vest Eight Mile Hoad, Detroit, Michigan Dear Cal: A fev days ago I was asked a direct question in connection with the use of tetraethyl lead as an ethylating agent for an arsenic compound, a3 to the temperature at which appre ciable decomposition of tetraethyl lead begins to occur. Hot having this information at my finger tips and wishing to be sure that I make no mistake, I should appreciate it if you would let me know. There is one other question which I think you can answer much better than I from greater practical" experience. What i3 the best solution to U3 for decomposing tetraethyl lead in the small quantities in which it might be found on laboratory glassware, and on the floor of the chemi cal hood in which one works with tetraethyl lead on a laboratory scale. Ho doubt the quantities of tetraethyl lead will be small, but in view of the fact that an appreciable quantity might be spilled, I want to be sure that any solution which I recommend will not give rise to too violent reaction and possibly to fire. I believe we have used bromine in carbon tetrachloride in approximately 5^ solution. Is this satisfactory for general use in an organic chemical labora tory or is there something better that is generally availa ble? You will probably think it strange that I a3k you these questions after so many years of experience, but I like to go to headquarters for information, particularly when I have reason to advise someone outside of our own laboratory. Sincerely your3, RAX ef W oFefrrrra'oeT 'S'rDT 00! J 74 N16575