Document o9m6qgvG3VzLopZKOr6xr43yo

December 1 3 , 1937 D r . Don D* I r i s h Dow Ch e m ica l Company Mid lan d , Michigan Dear Do ct o r I r i s h : - Aft e r some d e la y w h ich was o cca s io n e d b y t h e n e c e s s it y o f my b e in g in So u t h Ca r o lin a much o f l a s t w eek, I am s e n d in g you t h e in fo r m a t io n which I prom ised w ith r e fe r e n ce t o th e h an d lin g o f t e t r a e t h y l lead * The s o lu t io n o f br om in e in car bon t e t r a -c h lo r id e which I a d vise d as a means o f decomposing t e t r a e t h y l le a d in t o in o r ga n ic lea d may be e it h e r d ilu t e or co n ce n t r a t e d dependent upon t h e u se t o w h ich i t is t o be p u t* We u se a t e n p er cen t s o lu t io n and a fiv e p er cen t s o lu t io n around the la b o r a t o r y , and e it h e r o f th ese can be kep t w ith in a stop p er ed b o t t le w it h o u t the developm ent o f s u ffic ie n t vap or p r essu r e t o cause le a k a ge o f bromine t o any ap p r e cia b le e xt e n t , A more d ilu t e s o lu t io n can be used s in ce i t is m er ely n e cessa r y t o have a l i t t l e excess o f bromine over th e t h e o r e t ic a l r eq u ir em en ts fo r th e co n ve r sio n of le a d t e t r a e t h y l t o le a d bromide* With in the lim it s o f q u a n t it ie s of le a d w hich are t o be d e a lt w it h , t h e mere d ilu t e the s o lu t io n t h e b e t t e r fr om the p o in t o f view o f s a fe t y as t o the v o la t iliz a t io n of the b r o m in e , and a ls o as t o in ju r y fr om c o n t a c t w it h it # I sh ou ld say t h a t in your case a fiv e p er cen t s o lu t io n sh o u ld he a d e q u a t e * As im p lie d a b o ve , t h is can n o t be k e p t In an open co n t a in e r w it h o u t g iv in g o ff bromine fu m es, b u t i t sh o u ld he k e p t in a st o p p e r e d b o t t le such a s , fo r exam p le, an a cid b o t t le * As t o th e le a t h e r g lo v e s , I am e n clo sin g a n o ta tio n as to where they can be ob tain ed and how t h e y s h o u ld he p r e p a r e d , I t h in k you w i l l h a ve t o im pregnate the glo ve s w ith the t r e a t in g s o lu t io n in th e la b o r a t o r y s in c e , so fa r as I know, thqf can n ot be purchased a lr e a d y p r ep ar ed , I have gone over th e r e g u la t io n s and the b lu e p r in t w h ich were g iv e n t o me on th e day o f my v i s i t , and I h ave made c e r t a in n o t a t io n s on t h e copy and ce r t a in oth er a d d it io n a l n o t a t io n s , a ll of w hich I th in k w ill be s e lf-e xp la n a t o r y . K 000997? 2 pv, Don D. Ir is h . There Is only one oth er fu r t h e r t h in g w hich m ight he s a id ad van tageou sly and t h a t con cer n s the hood w hich is in use In th e Se m i-P la n t. I th in k your hood w ill be s a t is fa c t o r y fo r your p r esen t purposes* alth ou gh t h is v e n t ila t io n Is n o t q u it e as g r e a t as t h a t w h ich we o r d in a r ily recommend fo r t h e h a n d lin g o f F lu i d . I f t h e work w ith t e t r a e t h y l lea d assumes la r ge r scope I do not b e lie v e t h a t t h is hood would b e a d e q u a t e . Th e r e fo r e what you do w ith r ega r d t o t h is ite m sh ou ld depend, in my o p in io n * on w hether t h is p r oce d u r e co n t in u e s or gr ow s. I t s ca r ce ly seems ju s t ifie d to spend any co n s id e r a b le sum o f money In t h e e n la r ge m e n t o r Im provement o f your hood i f t h is p r o je ct Is lik e ly to be d iscon tin u ed soon. I t was a p le a s u r e t o see and t a lk w it h you and I am v e r y g r a t e fu l fo r th e In fo r m a t io n which you gave me w it h r e la t io n t o you r s t u d ie s on p h en ol* I was a ls o ve r y much in t e r e s t e d in your s e t -u p and your p lan s in ge n e r a l and I hope to have an op p or tu n ity to r etu r n a t a la t e r date* I f I can be o f any s e r v ic e t o you in co n n e ct io n w ith any q u e s t io n s w hich may a r is e in t h e h a n d lin g o f t e t r a e t h y l le a d , p le a s e do n o t h e s it a t e t o c a ll on me* Ho d ou b t you have r e ce iv e d th e sample co n t a in e r s which I s e n t you and the in s t r u ct io n s fo r the c o lle c t io n o f sam p lo3 . I s h a ll r e p o r t ou r fin d in g s t o you as soon as we have a chan ce to exam ine the s a m p le s . * r e ga r d s * I am With k in d e s t p er son al Co r d ia lly yours* RAX: i s Ro b e r t A ''le lio e , MD'. KE" 0009378 Le a t h e r Glo ve s fo r Use In Ha n d lin g Ma ch in e r y or To o ls o r Ot h e r Work fo r Which Rubber Glo ve s Are Too Fr a gile , fr om L l p s c Eo h it rs z, e hij.l0d0e glo v e s Ch e s t n u t of S t pr re op et e , r type P h ila d can e lp be h ia , o bt or a in ed fr o m Condor Glove Company, Co n d o r , Hew Yo r k* Ther e a r e p r o b a b ly o t h e r s o u r ce s from w h ich e q u a lly s e r v ic e a b le g lo v e s can be o b t a in e d * Co s t Is a p p r o xim a t e ly $i^*75 Pe r d o ze n . . These glo ve s sh ou ld be t r e a t e d by b e in g dipped In by of an im p r egn h eatin g to glyce r in e j atin g b o ili cool so ng to lu11t3i0poonCunbdanedofofrdecrhadiipnippeepddi.n Prepare soap and g gloves Is4-opluout inodns and main t a in a t n o t le s s t h a n 1G0C d u r in g p e r io d glo v e s a r e In t h e s o lu tio n . HE" 0009973 Re g u la t io n s Co n ce r n in g Use o f T e t r a e t h y l Lead in th e Se m i-Pla n t I . Ok e xce p t t h a t t h e wooden b ox sh ou ld be e le v a t e d on a s h e lf or b r a cke t so as n ot to s i t in co n ta ct w ith the pan w hich c o n s t it u t e s th e flo o r o f th e hood# I I . Pa r a gr a p h one Ok. Par a gr a p h two m o d ify as fo llo w s * A con ven ien t con ta in e r s h a ll be so mounted in the hood a s t o make a v a ila b le a str e a m o f ke r ose n e th r ou gh a fa u ce t fo r w ashin g th e equipm ent and th e m e ta l pan o f the h o o d . A q u a n t it y o f b r o m ln e -CGl^ s h a ll a ls o be a v a ila b le in a gla s s stop p er ed b o t t le fo r use in the d e co m p o sit io n o f an y T .E .P b w h ich may be on g la s s e q u ip ment or w hich m igh t be s p ille d o u t sid e th e hood . Th is s o lu t io n should n ot be a p p lie d upon the ir o n pan or the rubber gloves b u t these can be clean ed w ith ke r ose n e . A source o f r u n n in g w ater sh ou ld be s u p p lie d w it h in th e hood t o wash away any ke r o se n e as w e ll as an y b r o m in e -CCl^ w h ich r em ain s on equ ip m en t or w it h in th e m e t a l p a n . The m e t a l pan c o n s t it u t in g th e flo o r and th e low er p o r tio n o f the s id e s o f the hood sh ou ld be so ar r an ged as to d r a in e a s ily and co m p le t e ly to the d r a in , and t h is pan sh ou ld be kept fr e e o f waste m a te r ia ls o f a ll kin d s between op er ation s w ith in the hood* A l l g la s s ware w it h w hich T .E .P b comes in c o n t a c t s h a ll be washed im m e d ia t e ly a ft e r u se w it h br om in ew CCl^ s o lu t io n t o d e s t r o y the T .E .P b . Als o any T .E.P b w h ich may be s p ille d on flo o r or e lse w h e r e o u t s id e the hood sh o u ld b e decomposed w it h b r om in e-CCl^ . b e fo r e w a sh in g down th e d r a in * T .E .P b craning in c o n t a ct w it h Ir o n o r r u b b e r ^ : equipm ent or w ith th e s k in s h a ll be washed away im m ed iately and th or ou gh ly w ith k e r o se n e , fo llo w e d by soap and w ater* I I I . Pa r a gr a p h A - Ok. Paragraph B - Han d lin g in Se m i-P la n t . In s e r t the fo llo w in g p a r a gr a p h a ft e r "t h e fo llo w in g p r o ce d u r e !1 P i l l t h e Ir o n c a t a ly s t co n t a in e r w it h th e d e s ir e d q u a n t it y o f T .E .P b some time b e fo r e i t is r e q u ir e d and in s p e ct c a r e fu lly a ft e r each f i l l i n g t o make su r e t h a t no le a k i s o ccu r r in g t h r o u gh th e v a lv e s and t h a t no d r ip p in g h a s o ccu r r e d on t h e o u t s id e s u r fa c e o f t h e c o n t a in e r . I f r e p a ir s ar e "r e q u ir e d t h e e n t ir e co n t a in e r and v a lv e s must he washed c a r e fu lly and r e p e a t e d ly w ith ker osen e b e fo r e d is m a n t lin g . Oth er w ise t h e a p p a r a tu s sh ou ld be burned b e for e d is ca r d in g , B - Pa r a gr a p h 2 - Ok as w r lt t e n l KJS' 00099S0 2 B - Pa r a gr a p h 3 ** Ok* Par agr ap h l}. Fo llo w in g th e s e n t e n ce e n d in g '"by the r e flu x " add the fo llo w in g sen ten ces Retur n gloves to a r e ce p t a cle in w hich th ey shou ld be . k e p t a t a l l tim e s when n o t in u se * Keep glo v e s cle a n and d is c a r d when worn or when co n t a m in a t e d w it h T .E .P b . Pa r a gr a p h $ ~ Ok* I sh ou ld a d vise the fo llo w in g procedure which need n ot be r ecor d ed in th e in s t r u c t io n s * I s u gge s t ' t h a t t h e r e g u la t io n fo r h a n d lin g T ,E `,P b a t hood and ab ou t t h e a u t o cla v e s h a ll be fr am ed and p o st e d a t t h e hood or in some o t h e r co n sp icu o u s p la ce w it h in th e Se m i-P la n t * I s u gge s t t h is b o t h as a r em in d er t o th e men and as e vid e n ce t h a t the men have been p r o p e r ly in s t r u c t e d * h e e d le s s to s a y t h i3 s u gge s t io n is a m a t t e r fo r the d is c r e t io n o f you r own management s in c e i t in v o lv e s the p o lic y o f you r company* KE 0009981