Compositions containing urea, ammonia, and water

Details Compositions containing urea, ammonia, and water Compositions containing urea, ammonia, and water

1982-07-14

1985-04-02

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 6410, C05C 900, C05C 1300

Patent

active

045085587

ABSTRACT:
Urea-ammonia-water solutions having a total nitrogen content between about 30 and 37 percent by weight commence crystallization at unexpectedly low temperatures. As a result, such solutions, when employed as a fertilizer, remain in the liquid state under a wider range of temperature conditions than heretofore believed possible.

REFERENCES:
patent: 3438764 (1969-04-01), Church
patent: 3515533 (1970-06-01), Church
patent: 3529951 (1970-09-01), Every et al.
patent: 3746528 (1973-07-01), Johnson
patent: 4230479 (1980-10-01), Richardson
"Physical Properties of Ammonia Solutions", by Worthington et al., Industrial and Engineering Chemistry, vol. 44, No. 4, Apr., 1952, pp. 910 to 913.
"Urea--Its Properties and Manufacture", by Chao, Chao's Institute, 3014 Larkwood St., West Covina, Calif., pp. 260 to 278.
"Liquid Fertilizers", by A. V. Slack, Chapter 20 of Chemistry and Technology of Fertilizers, ed. Vincent Sauchelli, Reinhold Publishing Corporation, New York, 1960.
"Division S-4--Soil Fertility and Plant Nutrition", by Fenn et al., Soil Science Society of America Journal, vol. 40, 1976.

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