Document jBedk16oKZG4J8GpQXKZGgXG5

February 26, 1968 Mr. Jullian Fasano Air Products and Chemicals, Inc. Route 222 Trexler Town, Pennsylvania iG )G7 Dear Mr. Fasano THERMXNOL FR-LO-T04P Toxicity and Safe Handling Information On the basis of anlmel toxicity studies with other Therrainol fluids, Thermino1 FR-LQ-TEK? may be considered moderately toxic from the standpoint of accidental massive okin exposure and only slightly toxic If accidentally ingested. Single exposures to high concentrations of vopora (when heated sufficiently to volatilise) or high- concentrations of decomposition products (if the fluid is accidentally discharged into the fire chamber) should not be serious hararda because the irritating character of such concentrations preclude voluntary exposure. Repeated or prolonged akin exposure should be avoided since the fluid ucts as a solvent for fats and oils of tha akin. Removal of these natural, protective barriers can lead to drying and chapping such aa occurs with oxpoourea to paint thinners. More important, Thermino 1 FR-LO-TEJfP may be absorbed If it la allowed bo remain on the unbroken skin. For these reasons, we recommend that tha skin be washed with soap and vrater if there is contact. A skin bum reaultlng from accidental contact with hot fluLd should be treated in the normal manner for any thermal bum due to hot oils. Because of Its low vapor pressure, there is no significant vapor inhalation hazard when the fluid 13 at room temperature. For example, there is no vapor exposure problem while trans ferring the Thsrmlnola from shipping containers to tha heat transfer system. On the other hand, the vapors emitted when the fluid la heated to elevated temperatures are injurious on prolonged exposure. It is estimated that the "threshold limit DSW 018287 STLCOPCB4004831 Mr. Jullian lusano February ':.6, r;68 /a^uo or atmospheric vapor concentration which cannot be oafely oacGeded (on a dally basis) la 0.5-1.0 milligrams of vapor per cubic motar of air In tha workroom. In heat transfer Installations, tho fluid mu3t be used in a closed system free from leaks with the expansion tank ventod to the outdoors. Accordingly, there should be Uttle or no opportunity for workers to come In contact with vapors. Our label for fchly product contains the fo' 1 swing pi-scout*, onary ctateiccnfct -/.mom Tonfcaina Chlorinated Hydrocarbons. / Avoid prolonged breathing of vapors or mists. Avoid contact with eyes or prolonged contact with akin. If ;.kin contact occurs, remove by washing with soap p.nd water, following eye contact flush with . water. , If clothing becomes soaked with fluid, launder before wearing again. Very truly yours, 'i I / I io >3 f >;c: iir. ilolort Campbell / / / / R. Eranet llelly, M.D. Medical Director : /l \ \ OSW 018288 STLCOPCB4004832