PU BLISH ER G io r g i Lake E D IT O R R a lp h L. o o r r e l l , M.D, C linical M edicine A M edical Journal Devoted to the Advancement of General Practice Professional Building Waukegan,Illinois June 16, 1947 Dr.

\ TH E JOURNAL OF INDUSTRIAL HYGIENE AND TOXICOLOGY HARVARD SCHOOL OF PUBLIC HEALTH tM anaging Editors Philip Drinker Margaret S.Perry September 16, 1948 Editorial O ffice 55 S hattuck S t reet B oston 15, M ass.

*Oi JAMES J.HEEKIN, CHAIRMAN Or BOARD ALBERT E.HEEKIN, Pr es t .

February 12, 1944 19 Dr.

No. 256 - 1948 December 2 EXTRA COMPENSATION VOTED FOR EMPLOYEES At its November 23 meeting the Company's Board of Directors author ized the payment of extra compensation to each employee -equivalent to six per cent of his total earnings (up to and including a maximum of $6000) for . the first eleven months of 1948.

Minutes of Meeting of' SXEGUTIYE COMfflTTEE' held FRESSHTli.

BET1II TO MARSHALL LABOflATOflY INDEXED'irzM DATES JULY 15a 1944 REPORT HO, 901 h. ^. ^ C^C telBEHCt COW v>' p f o r ORCUUTION PAHLJH LABORATORY REPORT SUBJECTS COLD CRACKING OF MAROON METALLIC DUCO" 1' .

mm 18 MARSHALL LABORATORY LIBRARY "INDEXED" C""2- xltrprt REPORT Ed, S*: ?

ETHYL CORPORATION V CHRYSLER BUILDING 405 LEXINGTON AVENUE NEW YORK 17, N.Y April 29, 1946 Dr.

..May 12, 1943 Er. 0 .

ETHYL CORPORATION RESEARCH LABORATORIES 1600 WEST EIGHT MILE ROAD PERIODALE 20 DETROIT.

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February 16, 1940 Mr.

Architectural White 58-5223 "DULUX" Superwhit Trad Sales 0el0'53 Mr y, w iiitti Xaho C- } Mr B 1 Mansi8 lab Dr A Jo Hemmer, control lab Mr Mo B Grubb, * * Philadelphia laboratory May 15 1946 MEMORANDUM REPORT #M~4l "DULUX'* SUPEKWHITE COLOR STANDARD Glii During Ben Mansi5s rseent work on lihseed/PE MDULUXM Superwhite, h noticed that the present 58-613 color standard (Duco" Dry Plate P-5078 dated 10/17/45) appeared to be on the dirty side, and the poor color of this standard was verified by checking against a batch of the present rutile 58-613 formula produced in 1941 under the code P-5S-R-40490, Batch P-484O80 This was discussed with Dr A, J Hemmer and it was agreed that the present dry plate standard did not represent the proper shade and that eteps should be taken to provide a satisfactory color standard,, Evidently, some error was made when the dry plate stan dards were set tip, but we do not know how this happened The Con trol Laboratory has available one of the present dry plate stand ards showing color approval by both M Ep Grubb and the writer at the time it was established, but regardless of this fact, the dry plates are unsatisfactory for color Unfortunately, none of the old wet standard in use prior to adoption of the dry plate stan dard is available and new standards will have to be prepared based on available evidence and our best judgment The available evi dence is as follows; . 1 We have available P-58-N-40490 {Batch P-484O8) made on the present 58-613 rutile formula and passed for oolor in 1941 vereus the wet standard then in use 20 The old porcelain color standard In use during 1937 is available and this was superseded by a wet standard of improved color0 This new standard was adopted 1/21/38 per information given in Mr J F Frailey's letter to E J Meofarlan dated 10/ 12/38p It is known that this wet standard was cleaner in color than the porcelain standard and that it could be matched using 32-508 only as the tinting material in an amount ranging from 9- , 10 lbs of 32-5O8 per 1,000 gallons of 58-613* This information is also.given in Mr Frailey's letter of above date At that time, namely, 1938, 58-613 was made on the 90/10' - W-16/W-154 basiso is 2-- We have prepared In tide laboratory a batch of 56-613 on the 90/10 - W-16/W-154 basis and bays tinted this material with W-508 (not W-514) in the same amount as previously used In 1938, namely, 9,5 lbs, of 32-508 per 1,000 gallons of 58-613 This pro-, duct is coded P-58-P-50767 and is evidently very dose in color to the 1938 wet standard, because it is about the same depth as the 1937 porcelain, but definitely cleaner.

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