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'MERWIN BRANDON. PRESIDENT FOI'�I�" � • <br />G. E. MANNING. VICE PRE$. AND CNIE, ENaR. <br />K. S. GEIGES. VICE PRESIDENT <br />H. F. DUNCAN. TREASURER <br />W. S. AUSTIN. SECRETARY <br />H. S. WHITAKER. VICE PREs, AND CNIEi ELEC. END". , <br />for$rroirr- Not forpro6t ,Ak: <br />y <br />sroNso"m $• ♦O <br />?\,ational +Aaarb of +Tim 3ittaerinriters <br />SANTA OLARX. CALIF. .,,, LLO,T EL„D <br />CNiC.CO IL ILI. ,o,A NU,T <br />NLW YO,F Il. N v ial ,I� rI .vE N.NOON. ILL. •. O. EO, <br />Retardant 3138 <br />Application No. 48C3194 <br />June 27, 1949 <br />HOUSE OF FABRI3 3.32S REPORT <br />EVERETT MALL . SU11 E No 52 on <br />1512 S. BROADWAY FLAMORT WC " <br />Everett, Washington 9820(..A SURFACE TREATMENT FOR WOOD AND <br />CELLULOSE BOARD TO REDUCE FIRE HAZARD) <br />Flamort Chemical Company <br />San Francisco, California <br />SUPERVISION OF PRO.)IUC." I Y UNDERWRITERS' LABORATORIES, INC. <br />This material will be placed under Label Service. <br />COMBUSTIBILITY: <br />Flamort WC surface. treatment applied to Douglas fir lumber and <br />cellulose board will reduce the flame spread and fuel contribution as shown <br />by the following classification factors in comparison to the performanr:e <br />of uncoated red osk evaluated at 100 and asbestos -cement board as O. <br />This reduction is only considered applicable when the coating is applied <br />as a finished surface on basis of 110 sq ft per gal in three applications <br />for the Douglas ?ir and 60 sq ft per gal in three spray applications for <br />the cellulose board. <br />Flame. Spread <br />Fuel contributed <br />Smoke developed <br />TOXICITY AND <br />Douglas Fir <br />65-70 <br />50-55 <br />Approximately <br />same as Uncoated <br />wood. <br />CORROSION: <br />Cellulose Board <br />50-55 <br />30-35 <br />10-30 <br />The Flamort WC surface treatment will not add to the toxicity <br />of gases as are released by untreated wood when exposed to fire, and will <br />not hasten the corrosion of metal. <br />PERMAN.P34CE OF TREATMENT: <br />Tht; ylAm in WC surface treatment may be expected to be stable <br />at ordinaXy indoor temperatures and humidity. <br />T±;e ss rface :treatment is soluble in water and will be removed by <br />washing and if subjectedto repeated exposure to water, it can be expected to <br />gradually regain the combustibility which is characteristic of uncoated <br />surfaces. <br />SUMMARY <br />The results of the tests justify the extension of our Label <br />Service to I' Flamort WC I'. <br />