Document w5VwjGqqjgyqb5obwO3Kny3B

OK C|- s Monsanto Chemicals -Plastics ____________________ CHEMICAL AIDS IN m DISTILLATION PROBLEMS 1 Monsanto Toehnleol Data Shoot February 26, 1954 Monsanto Chomical Company, Organic Chomicals Division, $t. Louis 1, Mo. CHEMICAL AIDS IN I Monsanto Tochnical Data Shoot DISTILLATION PROBLEMS ( AROCLORS*, HB40*, HB 20\ PHENYLCYCLOHEXANE, BICYCLOHEXYL All of the above materials are Monsanto chemicals which can be of value in certain distillation problems. These materials are high boiling solvents possessing good heat stability. The AROCLORS (a series of chlorinated polyphenyls) are especially noted for their chemical inertness, The other chemicals may also serve as inert solvents. Consequently, these materials all find use as distillation aids where the lower boiling materia] is subject to decomposition from localized overheating, and in cases where distillation residues are resinous or solid materials which are difficult to clean out of the still pot. The Monsanto chemicals listed also find considerable application as inert media for many chemical reactions. An example of the value of such distillation aids is a case where a product distilling at about 78C. at 40 mm. Hg. was separated without fractionation from A ROCLOR 1242 which, at the same pressure, boils at 210C. Another product boiling at 100C. at 2 mm. Hg. required only moderate fractionation to separate it from AROCLOR 1242 boiling at 135C. (at 2 mm. Hg.). Which material to use in a given situation can be determined from the table of properties which appears on the next page. When reduced pressures are involved, further data may be obtained upon request. AROCLOR products 1242, 1248, 1254 and 1260 are liquids with progressively in creasing boiling points. These liquids act as a stable heel in the still and allow all of the desired end product to be recovered. In cases where the distillation residue normally tends to polymerize into gummy materials or to decompose into solids, the liquid AROCLOR compounds can be used to keep the residue as a free-flowing fluid for easier removal. Also, by allowing better heat transfer in the fluid, excessive decomposition and product loss can be minimized. m. oj. r*t. on. The Inlemiallen contained In Me bulletin U, la aur aatl knawlrd|*. Vu* and accural*, but all reeamatendallene ar arc <nad* wlOvaut (uaramaa, tint* the eandittehe at uaa ara bajend a* aaatraV. Tba ManaaMa CheMee) Campari? diaclalm* an? Iiablllip Inctrrad In eeanaetlen *lih the uaa af thaea data ar auttaatlaM. Pirthannora. nothin! contained herein ahall be eeoetrued aa a recommendation I* uaa an? product in eeafltct a>llh aatalin* pataMa covert*! am? materiel ar Me uaa. February 26, 1954 o 70 9 V ? TOWOLDMONOQ38173 In addition to the liquid AROCLOR products, Monsanto offers AROCLOR 5460, a resinous solid which has been used to plasticize solid still residues to facilitate re moval. This resin cannot be recovered and is discarded with the residue. From 25% to 30% of AROCLOR 5460, based on total residue weight, will satisfactorily plas ticize most such residues. When used as distillation aids, the liquid AROCLOR compounds can be reused several times and either discarded or distilled to restore their original refined state. Used as stable solvents for reactions conducted in an inert liquid phase, the liquid AROCLOR compounds perform very well. Here again, the liquids can usually be used several times before discarding or re-purifying. The other chemicals listed are included to offer a wider choice of boiling points both at normal and at reduced pressures. The table below will help to choose the correct compound for your reaction or distillation situation. Your Monsanto representative will be glad to discuss specific problems and to provide or obtain other data needed. (Values art Approximate) toenyleycloheiene Iltycloheiyl AROCLOR 1242 AROCLOR AROCLOR AROCLOR 1248 12S4 1260 HB-40 Nfi-20 Distillation Rang# 239-244*0. 238-242*0. 125-360*0. 340-375*0. 365-390*0. 385-420*0. 340-396*0. 312-370*0. tour tolnf 2.5-5.5*C. 1'3*C. minus 19*C. minus 7*C, 10*C. SI*C. minus 2J*C. minus 54*C. Viscosity (SUS at lOO'F.) 11.2 34.2 80-93 185-240 1800-2500 72-78 144 (at 210*P.) 55.7 Specific brevity 0.928 at 0.988 at 1.380 at 25715.6*0. 25 715.6*0, 25725*C. 1.445 at 25725*C, 1.538 at 25725*C. 1.620 at 25725*C. 1.004 at 25715*0. 0.971 25713*0. For further Information, contact - MONSANTO CHEMICAL COMPANY Organic Chamicali Diviaion 800 North Twelfth Boulevard St. Louie 1, Miaaouri Printed Oi U8A 0613965 TOWOLDMONOQ38174 --/ Monsanto Chemicaj,s-Plastics __k/d________ (chemical aids in DISTILLATION PROBLEMS ^iv n-- . ---- Monsanto Technical Dota Sheet February 26, 1954 Monsanto Chtmical Company, Organic Chemicals Division, St. Louis 1, Mo. CHEMICAL AIDS IN ( Monsanto Technical Data Shoot DISTILLATION PROBLEMS ( February 26, 1954 AROCLORS*, HB40*. HB-20*, PHENYLCYCLOHEXANE, BICYCLOHEXYL All of the above materials are Monsanto chemicals which can be of value in certain distillation problems. These materials are high boiling solvents possessing good heat stability. The AROCLORS (a series of chlorinated polyphenyls) are especially noted for their chemical inertness. The other chemicals may also serve as inert solvents. Consequently, these materials all find use as distillation aids where the lower boiling material is subject to decomposition from localized overheating, and in cases where distillation residues are resinous or solid materials which are difficult to clean out of the still pot. The Monsanto chemicals listed also find considerable application as inert media for many chemical reactions. An example of the value of such distillation aids is a case where a product distilling at about 78C. at 40 mm. Hg. was separated without fractionation from A ROCLOR 1242 which, at the same pressure, boils at 210C. Another product boiling at 100C. at 2 mm. Hg. required only moderate fractionation to separate it from A ROCLOR 1242 boiling at 135C. (at 2 mm. Hg.). Which material to use in a given situation can be determined from the table of properties which appears on the next page. When reduced pressures are involved, further data may be obtained upon request. AROCLOR products 1242, 1248, 1254 and 1260 are liquids with progressively in creasing boiling points. These liquids act as a stable heel in the still and allow all of the desired end product to be recovered. In cases where the distillation residue normally tends to polymerize into gummy materials or to decompose into solids, the liquid AROCLOR compounds can be used to keep the residue as a free-flowing fluid for easier removal. Also, by allowing better heat transfer in the fluid, excessive decomposition and product loss can be minimized. Th* Infennation MMtlmd in thlr Mlatln I*. aw bast Knowledge. frue and accural*, but all reeeremewletlene ar auuaatlan* ar* mad* without guarantee, etnce th* condition* al ua* ar* b*ynd aur control. Th* UanoaMa Chemical Campari? dlaclalai* an? llabUII? Incurred in eeaneetien with th* ua* of th*o* data or euggaeUon*. Pwthenaere. nothing contained h*raln ah*11 b* canatrvad a* a recommendation to ua* an? product in conflict with eiiallng palant* cav*rtn| an? malarial ar It* ua*. * 0613986 TOWOLDMONOQ38175 In addition to the liquid AROCLOR products, Monsanto offers AROCLOR 5460, a resinous solid which has been used to plasticize solid still residues to facilitate re moval, This resin cannot be recovered and is discarded with the residue. From 25% to 30% of AROCLOR 5460, based on total residue weight, will satisfactorily plas ticize most such residues. When used as distillation aids, the liquid AROCLOR compounds can be reused several times and either discarded or distilled to restore their original refined state. Used as stable solvents for reactions conducted in an inert liquid phase, the liquid AROCLOR compounds perform very well. Here again, the liquids can usually be used several times before discarding or re-purifying. The other chemicals listed are included to offer a wider choice of boiling points both at normal and at reduced pressures. The table below will help to choose the correct compound for your reaction or distillation situation. Your Monsanto representative will be glad to discuss specific problems and to provide or obtain other data needed. (Vlw*i ara Approximate) Phonylcyclohoxano Blcyelohaxyl AROCLOR 1242 AROCLOR AROCLOR AROCLOR 1248 12S4 1260 tffl-40 HB-20 Distillation Rang# 239-244'C. 2*8'242*C. 325*360C. 340'375eC. 365*390C. 385'420C. 340'396C. 312'370*C. fair Point 2.5'5,5`C. 1-3`C. minus 19C. minus 7C. 10C. 31C. minua 25*C. minuft 54C. Vtaooalty (SUS ot I00*F.) *1.2 *4,2 80-9* 185240 1800-2500 72-78 (at 210P.) 144 55.7 Spoclftc brevity 0.9*8 at 0.988 at 1.380 at 23*/l5.6*C. 25/15.6C. 25/25C. 1.445 at 25/25C. 1.5*8 at 25/25C. 1.620 at 25/25C. 1.004 at 25/15C. 0.971 25/15C. For furthor Information, contact MONSANTO CHEMICAL COMPANY Organic Chanticalt Division 800 North Twelfth Boulevard St. Louia I, Missouri Printed in U S A. 06139B7 TOWOLDMONOQ38176