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Top Brass Polisher Dad never kept his brass so shiny, but, of course, his metal polish didn't contain Jeffer son polyethylene glycol to help improve the tarnish removing, rinsing, and grease dispersing actions. This is just one of the many versatile uses for polyethylene glycols, which fall into two cate gories: uses as a chemical reaction intermediate and as an unreacted polyethylene glycol. The reactive hydroxyl groups allow conversion of polyethylene glycols to mono- and diesters, ethers, and other compounds having use as specialty items or further reaction intermediates. Mono- or di esters of fatty acids are nonionic surface-active agents valuable as detergents; water-soluble tex tile, leather and metal lubricants; emulsifying agents in cosmetic, petroleum, leather and agri 8
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cultural formulations; and vehicles for certain therapeutic agents. As a result, they are capable of being used in hard water or acid solutions where normal anionic products break down. Unreacted polyethylene glycols make effective plasticizers for a variety of compounds and are useful as lubri cants in the textile, rubber, cellulose, and cork processing industries. Jefferson offers polyethylene glycols having molecular weights of 300 to 4000. Weights from 300 to 600 are viscous, water-white, hygroscopic, completely water-soluble liquids, while 4000 is a hard waxy solid supplied as flakes. Jeffer son's technical service people can assist in de termining the right polyethylene glycols for your applications.
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^?[L@K]B @IW®®li© POLYETHYLENE GLYCOLS
Average molecular weight Specific gravity, 20/20°C Color, Pt-Co scale Ash, wt. % pH, 5% aqueous solution, 25°C Viscosity, 210°F. centistokes Freezing point, °C Acidity as acetic acid, wt. %
SPECIFICATIONS 300
400*
600
285 315 1.125 1.130 25 0.10 4 7
380 420 1.125 1.130 25 0.10 4 7
570 630 1.120") 1.125"» 25 0.10 4 7
Complete
Complete
Complete
min. max. min. max. max. max. min. max. min. max. min. max. max.
Water solubility Note: Polyethylene glycols of all molecular weights are clear and substantially free of foreign matter. U.S.P. Grade of Polyethylene Glycol 400 also available. Meets U.S.P. specifications. ** At 25/4°C. (1) In 25% water solution. (2) Sulfated. (3) Light transmittance of a 25% solution before fil(4) tration shall be not less than 95% of the value obtained after filtration.
4000*
50 0.25 4.5 7.5 75 85 53 56 0.02 Complete^
SELECT PROPERTIES 300
400
600
>375
>425
>450
Viscosity, SUS, 210°F.
45.4
52.7
61.7
Weight, 20°C, Ibs./gal
9.39
9.40
9.37
Flash point, (open cup), °F.
SHIPPING AND HANDLING
TECHNICAL INFORMATION
Jefferson polyethylene glycols are available in coiled tank cars, mixed-shipment compartmented cars, coiled tank wagons in certain areas, resin-lined, non-returnable steel drums, and fiber bags (depending on the molecular weight). The handling and storage of the liquid polyethylene glycols is a straightforward operation. However, due to their relatively low freezing point, hygroscopicity, and color instability at elevated temperatures, storage conditions should be controlled. These products should be maintained 10-15°F. above their freezing point. Temperatures above 120°F. should be avoided. Complete handling and storage recommendations are contained in the literature at right.
For more detailed chemical and physical data on polyethylene glycols, ask the Jefferson technical service people or write for this Technical Brochure . . . Jefferson Chemical Company, Inc. 1121 Walker Avenue, P. O. Box 303, Houston 1, Texas.
HOUSTON · NEW YORK
· CHICAGO · CLEVELAND
CHARLOTTE · LOS ANGELES · SAN FRANCISCO
JEFFERSON CHEMICALS 118
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