Document qanMa0NZNKvgJ94y30rm5D0VM

4* vi Dr* R. L. Jenkins, Anniston t : * REFl YOOR LETTER* MAI 80* 1941 .. Mr. Gerber, Anniston X am sending* yon, herewith, copies of ear method for r Moisture in Pyranols end Aroclors, and our General1 Method for Traces of Moisture* The first gives specific directions for the determination of moisture in the Pyronals and Aroclors, whereas the latter gives detailed Instructions as to the preparation and standardisation of the Sari Fischer Reagent* i We do not take any specific precautions in the sampling, nor for removing adsorbed moisture from the titration flasks* The flasks are dried in the usual type of drying oven and the solvent is titratfed to the endpoint before the sample is s44ed* >.This should preclude contamination of the sample with adsorbed moisture. * * ........ 1 As to the cloud point method, the only information I have (r1' is that which you gave in your report of conference held at Pittsfield, on August 14, 1929* fh this you state that Clark used the ASTH method fop the^dO^djpolnt* You also gave a table ^showing the. relationship between the ppm of water and the'" cloud, point*' X .a showing a copy of that . table belowt \ laS. Cloud Point 5 ppm* 18 ppm* 29 ppm. 50 ppm* 68 ppm* 100 ppm* 7C 5*0 4 8C 480*0 In % subsequent letter to you (Oct** 10, 1989), Mr* Clark gave a correlation Of the ppm* water and the dielectric strength* X am likewise showing a copy of that* ... Water Content (ppm* by weight) Dielectric Strength (85C) 10 ) \ 5 40 }. 60 \ 48 84 86 19 DSW 330629 STLCOPCB4077273 S' * *2 The thing I particularly wanted to discuss with you while you were in 8t. Louis was the setting up of specifications for 0# E* Pyranols# particularly Ho. 1476, which is now !, being made at Anniston* As you know# Mr* Clark was also ! In St* Louis about, that time and I contacted him with re* f gard to all of the* Pyranols indicating to him some changes whlbh I thought should be made* Be noted these and was taking the* back to Pittsfield for decking with his men ':: ! up there*' I am sending "you, herewith* a copy of the sped* flcations which X think Monsanto should set up for Arodor 1254 (Q*E* 1476)* Qiould you have any comments they would be appreciated* If not# please advise me as I would like to send these along to Mr* Watt so that we can have a for* mal Plant B specification set up on this material along with the .other Pyranols and Aroclors* RR M, J* Wlegand P*g. r \ Will you please check the figure for total chlorine content* Our old specifications indicated it to be 58.5 to 55.5# while in a memo to Dr* Kyrides, dated 5/12/38# you stats bhat the specifications on chlorine content of O.E* 1478 is 54*5 to 55*5. . DSW 330630 STLCOPCB4077274 8 Material! Aroclora and pyranola Tastl________________laS---------------* u . -tar# in' Aroclors and *ypanola la determined with lari ?lschr (Mathod io. 10,100^40, (0Jt. 7}). -Because of the varying -IiMMittv of the products tested, different proportions pf e mixed aSlventare required. The analysis itself, however, la the same tor all lfoclpra and Fyranols. . The analysis is made aa follow^ 1) Add the solvents as Hated below to a 500 ml. Srlenmeyer flask* material Afford. Benaane fBfryfli.JUthftagI Pyranol 1478 ' 1^7fa 0 ml. Pyranol 1488 50 ml . ! pyranol 1495 I All Aroclors 80 ml. 80 ml. 50 ml.jTO 50 ml. 50 ml. 50 ml. ) Titrate the solvent to the characteristic brown endpoint with Pi acher reagent* ' a) Refill the buret to the sero mark. 4) weigh a 100.0 gf sample by difference into the solvent. Mix wel Titrate the solution to the same endpoint as before. Calculation! % H,0 Plj-gisdher reagent x g.O factor_X 1QQ ; ? Sample Weight ^ The method is accurate to % 0.0005^ - $ Report the results to the nearest 0.00059C* ffr^ Materials General Method Method Ho. 10.100*40 : ------- ---r*-. ' **> ^ --g*t*r* Traces ___ ..... Tracer of; water may be determined by Hasans of m titration with Karl Fischer Reagent* ~ f-upeafht "18 prepared as foliowsi" ft&l 667 ml." of dry methanol and 269 ml. of dry Sr pyridine In a dry 1000 ml. Florence flask. Add 84.7 g. of iodine and shake to dissolve. Stopper and cool to 0 -2C in a slurry of ice and water. When . 3J& y //rV i _ /Jt* 3-\ ./, i ^ i'r"~ .. - _ DSW 330631 STLCOPCB4077275 4 cooled to proper temperature* edd 64 fig* of BO* at such rate as to require about 90 minutes for complete addition* Meep cold during the procedure* and shalee^f^eanently* SO* is best dispensed from a graduated cylinder* from which the lip has been rumored* and is provided with a%a hole rubber stopper through which a bent glass tube is passed* This bent tube should be connected to another tube leading- into the Florence flask the outlet 'of which is below the Surface of the liquid* Prepare 7 the reagent in one liter quantities only* This reagent should be 3>ttt. into use between three and seven days after preparation* Two bottles should always be on hand* When hot in use* store the reagent in a 2 ounce glass stoppered bottle* . Standardise the reagent as follows* Prepare a solution of dry methanol containing a known amount of water - about 6.0000 g* per liter* Titrate 10.*0 ml* of this solution with the reagent* The endpoint is a color change from yellow to brown* Call this titration B. Also titrate 10*0 ml* of the methanol used in the preparation of the water standard* Call this titration A* Titration A will account for 101JC of the water present in the methanol used for the standard* This correction Is negligible* Calc* dt the water factor a* follows* " ' ... ' , (l) >1* factor * g. of water per 1Q.Q ml* v -v .. b-a ; . Calc*dl the amount of water originally present in the liter ' of methanol* r Titration A x Factor x 100 It will be found that one liter of methanol contains about 1.000 g* of-water* This amount plus the amount of water added is the total amount of water in the standard* After the original cal- ; culation* the total water in the standard is known* 'and the fol-' lowing calculation for daily determinations.of-the factor can be employed! - - . - : : C l V (2) Ml* factor - ToIQ.tP.JlU Formula (l) Is Used only in determining total water in the standard* Formula is used for all routine standardlsatlont* The total g* of water per 10.0 ml* of standard will be posted on thr bottle containing the^standard solution* ........................ V:. the standardisation is carried out in a dean, perfectly dry 250 ml* Brlenmeyer flask* The factor will be approx* 0*00320 HaQ per Ml. Standardise the solution every day* immediately before first use In the morning#- ...... ' - * ` - ..... . . a ' h\ The reagent, is dispensed from am automatic burette sat-up . provided with a liter reservoir and a drying bottle provided dtK alternate layers Sf glasi wool and ?*0~* The drying agent must be renewed whenever examination shows that it is necessary. The air used in moving the reagent is drawn from the drying bottle through a pressure bulb and forced into the reservoir. All air emits are connected to the drying bottle* %7 DSW 330632 STLCOPCB4077276 * \ <* 8PECIFICATIOH FOR PROKJCT Product Jto. 46 _ Sales Code.Jta*__ IQ4Q-^g-7g-Qg Data _6-4-41 Jan* - - - Arodor* Distilled- Mo*-J.S54 Ifl* 1* Compound Ho. 1476V rhealoal Formula ' MlxturW-., _ . _ : , . ol Wt* loa -a ------ :. 5-1-56 .... . . :... . - . f. V ye.tUoa.JLot. Color v Yellow tinted viscous 10,084-40 liquid 150 APH lax. Condition Clear `. 10,084-40 Specific Gravity 65/15.5 1.495 to 1.505 10,114*40 Acid Ho. (Mg MaQH per f*) 0.01*ax. 10,087-40 Inorganic Chlorides^ 0*0000135 Max* . 10.118-40 Viscosity 98*9*0 (10F) 44-47 Seconds, Saybolt 10,036-40 . 'v -i- *' MniverSal . .. Dielectric Constant 100*0-1000 cycles 4*5 * 4*5 ` ,, 10.119-40 Resistivity - 1006C * 500 Volts 100 x 109ohms/C*8 10,180-40 ........ "" ! " " Min* ' Dielectric 8trength SO EV* Min* 10,188-40 Refractive Index 25*C 1.6570 to 1.6590 10,125-40 Distillation 105 560 - 570C 10,117-40 50* 570 - S80C 580 - 59Q*C four point . > 0 - XSTG 10.115-40 1*0 0.0055* Max* 10,680-48 Loss on Meeting 100*C-6 hrs* 0*45 Max* 10.116-40 Corrosion Test (Effect of 6 Mrs* at 810*C in contact tilth " .;* * . alumima) j ' * " ' > lo,/u* - ho Lose In weight of brlght aluminan lone v Inorganic Chlorides .. v 0*000015% Max. Acid Mo* * "f 0*01 Max* Color 400 AfB Condition Clear 8amplt for Analysis 8 x 1/2 gal* friction top tinned cans for lot samples* 4 x l/2 gal* friction top tinned cans for advance Q.E. f"}^m . _ ' _ Ibtef^lipecific tfraWty changes minus 0.00095 per *C '(50 to 105C) Special Specification* ` Tested only oh request* ElectrlcAl Stability lo decrease in Resistivity . (Aging feat}' After 96 hrs* at 100*C 10,121-40 " Born Point . Above boiling point 10,125-40 Total Chlori4*f ' 54.5 to 55.55 . 10,088-40 ,<jr ?/ '"* x &0 fS DSW 330633 STLCOPCB4077277