W, Nale Toxicology Department 300 Madison Avenue Data Originating Dmpti April 2, 195U Bakelite Sales Antwring fo/tar data Mr* H* F* Robertson Mr* H, S, Carpenter-- Ar ^ I j---^ $ubft Watson-Standard Company 225 Galveston Avenue Pittsburgh 30, Pennsylvania Dear Dr* Nale: We have had a request from Ur* Ira R, Messer, Vice President of subject concern, one of our larger customers, for information regarding the toxicity of BAKETJTE vinyl resins QYNV and VYNV* They use these resins in plastisols for the manufacture of dolls and toys* Their chief concern is the possible toxic effect of their product on a child who bites and chews pieces of the doll* We realize that no statements can be made regarding their finished compound but would like you to give them what assurances you can on the vinyl resins* Resin QYNV is a straight vinyl chloride resin made by emulsion polymerization; VZNV is a similar product containing a less than $% copolymerized vinyl acetate For determining possible toxic hazard of their plastisol, the suggestion has been made that subject run a hydrochloric acid digestion of the cured pigmented plastisol and a spectroscopic deteimination for arsenic and lead and other toxic materials* May we have your comments n this procedure or any other suggestions you may have for TMalH ng a simple range finding toxicity test on their plastisol* Can you suggest an outside laboratory which might undertake range finding toxicity tests on their plastisol compound?

Lead.............. .......................................................

Lead............... .

I The word "imperial" is not popular these days and leads to many a psychological block and Freudian slip.

In considering refrigeration power consumption, it should be noted that the use of weather records for a specific year may lead to large inaccuracies in estimating operating costs, since there may be wide variations from year to year, and therefore, average yearly weather records should be used rather than those for any individual year.

In considering refrigeration power consumption, it should be noted that the use of weather records for a specific year may lead to large inaccuracies in estimating operating costs, since there may be wide variations from year to year, and therefore, average yearly weather records should be used rather than those for any individual year.

. - preponderant S 3 T waves inverted in lead 3 Interpretation Normal Electrocardiogram .

The thermocouple leads A-B are so connected that their polarity opposes that of battery C.

Designs based on number <5f air changes per hour, or other rule-of-thumb methods, are hopelessly inade- 'I quate, and lead either to unsuccessful operation or to excessive andijUm.

Access doors of convenient size should be provided in the sheet metal connec tions leading to and from the filters. 4.

oaoslst of 2J& Botb ars slrt*t822y fjpss of way *&g of -W|PXf'yc-SN^l*>*vv'l'X^*v/:* DUP050068116 3* A 4 Qnm and Lot 2276, is 3 - doadKsos iwyimnt.n BSpulp). free of floccolatdtea ia elHjrd .anaunX I* Salta of benzoic add other than algadnaa os -|Q jgfwwHfe - f& <sw3jceS8% bKrlo% aid soluble end gaw Iw yields* the copper* lead, and Iras salts war* S&Otld* <t<t w* tamast flwwwtaMww X>OSistaiieO to *3m> wl ipwwwfr-- 2* tbs eddao, badea, copper, elms, load and dpaliasa salts of add wore wet-ailled with the CJC past* in poreef ` to. he as natfawi as those ends $y th ]sredpl&stiGD t*n>wiipaT Hosem^ only the sf tho Hayfttaa salt ffooe4 as `Mtti * w wwii i'.4n o fete1 *^ms i** benzoate none feed* The preparation of barium booaoate Idees is not too praetiGal, aster eolofeility of the salt* 3* SG$> Xafces coBfcdglng all r xa SX{QH Oi the jdfP*ed mm prepared and effect oa the flocculation of the although the sdgaseafc any ho coated dtb jradplttated rfXooeiilnti08 is :c)2* 4* Adds other add *> iw ndrtsrt woe v&Lch the mdinw salts wotm n/>b MMBflfc of WHltUfi soda of three types* iawifnite* fempyd'< mm to & fhs mm doadved in m e<fMM ' these adds *re Among the aisg&e adds tested for Oneetilatifin mt salts sere* phosphoric, terid, end oaaaUo* They had no flocculation of the pigaant* 5* asfda tooted must HOns sostritatid way yfrqp^^dfoi11 taslOicacs* fho end lactic acids ore seso&st water addle sad yields of tho Idem f eAS'AiJ'Upee Kai3dpiu^asimMtpPpaw* vBmpj O* w Opw BGSM*kpb dfcOWGi C$Hft 5v l ^ the scope of the patent, if oil of then ore an effective as fceetaeie sold in reducing noceul&tian of CPC toners* tewevor, if sene hnsaoic add dacifmtivM mm frond id he ineffective, than it is roooonefcl* to wwasse that tho pstant <8Mm most he' rcatidctod to aMoa salts of henatoje add only* As long m mm sobstltubed i mm nsdeam is iiMbltlng flocculation, any other derivatives that are affective are net e<jdv*lent8bot tm hamn&e add dwrivatlvas %4&cia aye useless in of etc toners in pdfBt ^^hw* are a* adds* DUP050068117 DUP050068118 ft.

Pipes made of copper, brass, or lead may usually be classified as smooth.

The problem finally resolves itself to a question of legislative action, and an educational program directed to legislative bodies should lead to such action. 774 Acoustical Engineering Principles (or Noise Reduction.

Akatsuka is setting himself up as a person with almost governmental authority in the matter of tetraethyl lead, and I think this by itself is a highly undesirable feature to encourage in Japan.

We expect to find out how the inquiry is progressing, and whether lead has been or might be brought into it, from the Western Oil ana Gas Association.