Whistler, R. L., and BeMiller, J. N., in Adv. Carbohydrate Chem., edit. by Wolfrom and Tipson, 13, 289 (Academic Press, New York, 1958).
Two dry solids --- barium hydroxide and ammonium nitrate --- are mixed to produce an endothermic reaction. The temperature of the mixture drops approximately 45oC and is cold enough to freeze the ...