Document 9JNqjEEvQKm6mMJGRM8R1DrjL

Datei 3/11/53 Materials, Arcelors, Pyranols, Method Ho. 10,115-53 By:. SE,NPA:SMK Inerteen P.O.P.O. W.G.K. Dept. Ho. 246 ---------- ---____ 2SkL_---- F aaLl&iLafc--_____ ___ asgLxjLoLl.R^e.s.).. The pour point of a product is the lowest temperature at which the material will .flow (or pour) when it is chilled under- definite pre scribed conditions listed in 1949 Book of A.S.T.M. Standards, Part 3- p* 736-739, A ,,S .T,M. !>esi.gr at ion D-'y-'''r7 ' s? ightly modified procedure is employed for the /J.G.K. Plant Laboratory tests, POceuej. 1. Pour the product to be tested into a clean, dry 100-ial. Messier tube to a height of 2 inches,, 2. Insert a cork carrying a thermometer of suitable range and ad justed so that the iharmomster is in the center of the tube and the capillary is 1/8 inch below the surface of the material. 3. Prepare the cooling bath in a 600-fp.l-o beaker. Choose the cooling medium from the table at the end of this method. MOTE: Keep the bath 8 - 10C. below the expected pour point. 4. Place the sample tube and thermometer assembly (Step 2) in a glass container large enough to permit 1/4 inch air space around the 2 3/11/53 MatejrJjLlJL Arcelors, Pyranols, MgthodLM&i. 10,115-52 By: SB - .MPA :SMK Inerteen P.0.P.0o W.0.K. Dept. Mo, 24b ___ ____ _______leaks-___E __ Messier tube. The Messier tube must' also be insulated from the bottom of this outer container by means of a cork or wad of cotton. 5. Adjust the sample tube in the outer container and place the ' assembly (Step 4) in the cooling bath (Step 3). HOTS: Direct contact of the Kessler tube with the cooling medium must be avoided to prevent rapid cooling if the test sample - hence the outer container. 6. Allow the sample to cool. Then beginning at a point of 1DC. above the expected pour point, remove the sample tubs at intervals of ever;/ 2 even degrees and tilt it Just enough to ascertain whether there is a movement in the material. Do this operation quickly and return the sample to the bath at once. 7. Continue the examination until a point is reached at which the meniscus of the product under the test does not move in the tube when held in a horizontal position for 5 seconds. Record the ;ure at this point. DSW 551089 I STLCOPCB4089506 Date! 3/11/55 Material: Arceiors, Fyranols, Bjj. SE,NPA:SMK Inerteen, P.O.F.O. ------------ ~-- ------------________________________________________________________ _ Method No. 10,115-53 W.Q.K., Dept. Iffo. 246 MOTEL Care should betaken to see that the products with exceptionally low pour points. are not cooled too quickly. In this instance' use a preliminary cooling bath to partially cool the sample and another bath to complete the solidification,, . .. Report as the pour point the temperature 2C. above the temperature recorded in Step 7. " Material: Approx. Pour. .Point Aroclor 1262 37 G. Arcelor 126 0 30JGo Aroelor 1254 10C. A roe 3. or 1248 -6C. Aroclor 1242 "20C. Pyranol 146? -32 c. Pyranol 1470 -44 C. Pyr-a nol 1481 ~20C. Pyranol 1488 -32 G. Inerteen1 ?o0.P ,0. *-32C 0 Cooling Medium (Rstioe~C.5 TherviararP';- ter 0 - 110 Ice and rater 0 - 110:' Crushed ice and water 0- Crushed ice and waste HC1"10" -'-10" 11c ohol and solid C02 -So - -i-40 Alcohol and solid 00a -60 +4o Alcohol and solid 00a "O0 ** 4-4 0 Ale ohol and sol id COa -60 - vtO" Alcohol and s ol id C 02 -DO - +40 Alcohol and solid co2 -60 - -4 0C but all recommendations or sugges'jons are _ I C.~,Mm wmtained herein is, to our best knowledge, accurate; control. Monsanto dis&aims any l'abi:ity for DSW 551090 STLCOPCB4089507