Document VypZqDEqxQEpzBDv9Zo6RLVp

) April 30# 1962 Vb*. B. Wilbur Speloher# AdBli>iitrttr Industrial Hygiene . Veetinghouse Zleotrie Corporation Bast Pittsburgh* hntugrlvuU - Star Wilbur# .' ' * * Thank you for your lotter of April 23# Z mu in New Toxic > and Philadelphia last week ao Z did not receive the eorree* poodanoo until this Bomlng. ' ` Z grM that we should rooonaldor our statoaont in any Aroelar bulletin relative to temperatures above ihlch local exhaust ventilation ahould be provided* Z believe the specific bulletin you aentloo (Bulletin O-P-115) is out of print# Zf Z find that it is not# Z will have aorreetiona Bade in any reaalnlng copies. Fm your faaillarlty with the Aroelere as a class of sonpounds# .1 know you appreciste that It la a Bistaka te attenpt to describe safe handling practices in generalities# While exhaust vantl* latloo-for Aroclcr 54d0 aay net be required until teopermturea reach 2000 to 300C, euoh would probably not be the case far Aroelor 1242. She difference here esn be appreciated frea the facts that Aroelor 5460 has a distillation range of 280* to 335C at 5 *.8g# Mhile Aroelor 1242 distills between 325 to 366C at 760 oa.Eg. She experience of your oenpanr In handling the specific Aroelora that you use Should dictate there and at *iat teoperatures loeal exhaust ventilation ahould be provided. Z can think of no bettor expert! than you and Bi Banes as to that control nesauraa are necessary in your on plants* . '* . Xn connection with hand eresas# it Mould be wv lapreeeice that one intended for protection against Organic solvents would be preferable to the type Intended to protect against aqueous CBRN 000005 62 TOWOLDMONOOQ1294 Nr. H. Vilbur Speicher - fags 2 - April 30. 1362 solution. 13m liquid Aroelors arc good solvents for tho nornal fata and ella of the akin. Zn our own operations we try to atrosa provontion of akin contact rather than tho uso of croaao. To answer your specific question, however, it would appear to no that fend f would offer aaro protection than Pend Z or Tend t. . j. , v. . ^ * * ' ^ ` Very truly yews. *. -/ zyvtsg *1 / Baer P. IBieolor Assistant Director . Medical SepartKDt < 0% f t " *r+'*?rxr-\tJ63mm*x; ***`J*J<i `Ji'Vi,. y.a / "V . . - N> 4 A I * SBRN 000006 63 TOWOLDMONOOQ1295