Document 65rEOgYm1k43ezLeyymEKzrm

July 27, 1964 Mr. Richard H. Davis Industrial Hygienist Loss Prevention Department Liberty Mutual Building One South Wacker Drive Chicago 6, Illinois Dear Mr. Davis In answer to your letter of July 23 concerning/gydraul A-200. I have enclosed a brief summary of the toxicity "and safe handling of this product. This summary is self-explanatory. In answer to your question concerning the decomposition products of this material, these are essentially hydrochloric acid vapors, carbon monoxide and phenolics. Because of the irritating nature of these fumes, voluntary exposure to high concentrations is not possible. A certain amount of the Pydraul A-200 fluid will evaporate into the atmosphere when exposed to heat or hot surfaces. Although the product has no threshold limit value as such, we recommend that vapors should not exceed 1 milligram per cubic meter of continuous exposure. If we can be of any further help either to you or to Outboard Marine Corporation, we would be glad to do so. Sincerely, JTOtakd Enclosure Jack T. Garrett, Manager Industrial Hygiene Medical Department DSW 586197 STLCOPCB4091531