Document nkpX9rgzBd14QDnyadDmxzDXw

34/7/3 Pkotc address any reply to THI DMtlCTO* end quote: ^V/?/3 four reference: , . O. Dear Mr* Curtis, Al/n/stry of Technology WARREN SPRING LABORATORY Gunnels Wood Road, Stevenage, Hertfordshire Telex: 82250 Telephone; Sfeveno^e 3388 CmDiv w 27th February, 1970 ,u ; - .* ' Disposal of Trichlorodiphenyl _ , *' v . .. .1/ . u \ I am sorry tho reply to your letter has taken so long but this has been due to ny having to conduct a literature search as we have had no experience of tricblorodiphcnyl. Furthermore my sources were all American and we have only recently received our copy of "Laboratory Waste Disposal Manual" of the Manufacturing Chemists Association, (1969)* 1825 Connecticut Avenue N.W. Washington D.C. The ..methods of disposal describod (p. 128) are as follows* i. ft>ur onto vermiculitc, sodium bicarbonate or sand-soda ash mixture (90:10). Mix and shovel into paper boxes. Cover with scrap wood and paper. Ignite with an excolsior train, stay on upwind side, or ' dump into a closed incinerator with an afterburner. , 2. Dissolve in a flammable solvent. Spray into the fire box of an incinerator equipped with afterburner and scrubber (alkali). One may interpret the method 1, as being applicable to your capacitors containing the material* ' . Our own preferred method which we have used successfully for various organic r-- materials is to drip feed them on to a metal dish e.g. a dustbin lid maintained at rod heat over an open fire on an exposed site. . According to tho Ifygicnic Guide of the American Industrial hygiene Association published in Industrial Hygiene Journal January-February, 1965* on tho chlorodiphcnylr they may decompose when exposed to flame or hot surfaces to form CO, CO2, HC1, phcnolica and aldehydos, depending on temperature, availability of oxygen, area of the heated surface and rate of application of liquid to this surface. You will no doubt be aware that the chlorodiphenyls irritate eyes, nose and throat, and aro capable of absorption via the skin. In the disposal methods suggested rubbor gloves and eye protection and overalls should be worn and a respirator suitable for organic vapours should be worn. ' G.A. Curtis, Esq., Technical Manager, B.I.C.C. Capacitor Division, Uelsby, Yforrington Lancs. ' Ale MQNb 0905<rb 7t Yt , Wo would not oonaider burial of toxic compounds of this hature, ' : If after all you would prefer to employ a knowledgeable disposal contractor we oould refer you to a satisfactory service. - I trust you will find the above helpful. o. X v Yours Sincerely. ... at: v u\ u t. v . . t: - ' t * *> . " {***' **. J Sanders ' .~ . , .... Senior Safety Officer' , .. :.u X X X 1 *u x HONS 0905^7