HARDWORKING JEFFERSON CHEMICALS
Photograph: Courtesy of N. A. Ostenso, Geophysical and Polar Research Center, The University of Wisconsin.
Dynamite Antifreeze This 400-pound seismic explosion in Marie Byrd Land, West Antarctica, had an added safety factor . . . ethylene glycol. Pure nitroglycerine freezes at 56° F. By nitrating a mixture of glycerine and ethylene glycol, a nitroglycerine-ethylene glycol dinitrate solution is obtained which resists freezing. This low-freezing dynamite minimizes the dangers associated with the thawing of dynamite prior to use. Ethylene glycol's ability to depress freezing points, coupled with its high boiling point, leads to its largest use — non-evaporative automotive antifreeze. The market for ethylene glycol antifreezes this year will be some 110 million gallons. 58 c & E N
In natural gas processing, triethylene glycol is the most commonly used glycol for dehydration by absorption. Diethylene glycol is preferred in the mixed glycol-amine process which sweetens and dehydrates simultaneously. HI-DRY, Jefferson's special grade tetraethylene glycol, is being used in absorption units where additional dew point depression or high contact temperatures are required. Or your practical applications for ethylene glycols may be in plastics, solvents, plasticizers, or pharmaceuticals. Whatever your applications for glycols, Jefferson can supply your product needs plus helpful technical services.
SPECIFICATIONS Water, wt.%
TRIETHYLENE
ETHYLENE
DIETHYLENE
0.30 max.
0.20 max. 0.005 max. 0.005 max.
0.10 max. 0.01 max. 0.01 max.
242 min. 250 max. 1.1190 min. 1.1220 max. _ —
278 min. 300 max.
GLYCOLS:
Acidity as acetic, wt.%
0.005 max.
Ash, wt.%
0.005 max.
Boiling range, ASTM, °C. IBP:
195 min.
DP:
207 max.
Specific gravity, 15.6/15.6°C
1.1174 min. 1.1179 max.
Specific gravity, 20/20°C
-
Color, Pt-Co scale
15 max.
15 max.
— — 1.124 min. 1.126 max. 25 max,
SELECT PROPERTIES Boiling point, 760 mm., °C
197.2
Flash point (open cup), °F
240
Specific heat, cal./gm./°C
0.544
Viscosity, 25°C, centipoise
17.4
Viscosity, 2 0 ° C , centipoise
—
Weight, 20° C, Ibs./gal
9.28
Ethylene glycols are available from Jefferson in 4,000-, 6,000-, 8,000- and 10,000-gal. tank cars, tank wagons in most areas, and 55-gal. resin-lined drums. The handling and storage of these glycols is in most cases a straightforward operation. They present no hazard of explosion, polymerization, fire, health, or other industrial risk. They are hygroscopic and have relatively low vapor pressures. There are, however, certain uses requiring extra protection against contamination during handling and storage . . . explained in detail in our technical literature.
NEW YORK
CHARLOTTE •
287.4 330 0.525
35.7 9.31
47.8 9.36
TECHNICAL INFORMATION
SHIPPING AND HANDLING
HOUSTON •
244.8 290 0.551
•
CHICAGO •
LOS ANGELES •
Request this Technical Brochure on Ethylene Glycol, mono-, di-,tri- and tetra-, for detailed chemical and physical data . . Jefferson Chemical Company,
Inc.,
1121
Walker Avenue, P. O. Box 303, Houston 1, Texas.
CLEVELAND
SAN FRANCISCO
C &EN
59
