Abstract
Measurement was made on the temperature of crystallization of various concentrations of calcium pyruvate isoniazone from its supersaturated aqueous solution. Supersolubility curves of crystals A and B were approximately parallel to their solubility curves. Examinations on the effect of solution concentration, rate of cooling, stirring, and other conditions on crystallization showed that these conditions affected not only the crystallization temperature but also the shape of crystals and the quantity. Further examinations were made on the conditions and mechanism of crystallization of calcium pyruvate isoniazone.
