Document XO4Zn5q0wLdY9zNQDZg5m4jvG

THE ASSOCIATED ETHYL COMPANY LIMITED NORTHWICH CHESHIRE te le p h o n e : N O R T H W I C H 3 2 4 1/ 7. ffead Office - A R T ILLE R Y H O U S E , A R T ILLE R Y ROW, L O N D O N , S W. I. A B B E Y 397-4. O U R REF. YO U R REF. CONFIDENTIAL M Z F / 4 (a) >Jeleyram s& Cables E T H Y L P O R T , N O R T H W I C H . 2nd November 1950 Dr. R. A. Kehoe, University of Cincinnati, Kettering Laboratory of Applied Physiology, Eden Avenue, CINCINNATI, U.S.A., Dear Dr. Kehoe, I am afraid I have delayed slightly my reply to your letter of the 5th October, on the subject of the possible quantity and quality of the heavy ends which will be produced in our new ethyl chloride process. I had hoped to try and get more factual information, but I do not believe that this will be realljr possible until the plant is in operation. Ne will then be able to, and we most certainly will, make a careful study of this aspect. The best data that vie have available at the moment is extracted from the process manual, and is given below. I have written to "Shell" to see whether there is any material off the pilot plant operations which might be made available to your laboratory for examination. The process consists of the chlorination of ethane and the hydrochlorination of ethylene to produce crude ethyl chloride. This crude ethyl chloride is then redistilled and the high boiling fraction or bottoms discarded. The residue contains the heavy ends, and consists of the following substances in the proportions s h o w : Ethyl Chloride Isopropyl Chloride 1.1 Dichloroethane 2 Chlorobutane 111 Triclilore thane 1.2 Dichloroethane Heavy Ends 9.9% 1. T% 63.0% 2. Y% 5. 57 17.3% 0. 3% ICO.0% . A. Kehoe -2- Date 2nd _November..125.0. to to Also present are traces of 2 methyl-butene, 2 dichloromethane, allyl chloride, 1 chloropropane, t-butyl chloride, chloroform and carbon tetrachloride. As previously stated, the quantity of heavy ends from the bottoms, mixed with the rest of the product is 5-lbs/hr. which is made up of benzene and substituted benzenes, paraffinic material, and chloropropenes. It iTOuld appear that this bottom fraction leaves the fraction ating column at a temperature of 2107 and a pressure of 33 p.s.i. fully liquid, and is cooled to 110F. This means that the boilin point of the mixture at atmospheric pressure is of the order of 30 or 90C, certainly not lower than G0C. hf/ecd Yours sincerely,