Patent ID: 8420403
Filing Date: 2013-04-16
Classification: C01D,Y10T

Abstract:
1. A method for evaluating the caking property of sodium hydrogencarbonate crystal particles, comprising: hermetically sealing the sodium hydrogencarbonate crystal particles in a packaging material having a water vapor transmission rate of at least 3 g/(m resting the hermetically sealed sodium hydrogencarbonate crystal particles at a temperature of from 17 to 35° C. at a carbon dioxide gas concentration of from 0.03 to 0.05 vol % at a relative humidity of from 40 to 95% for from 2 weeks to 3 months, and measuring a content of Wegscheider's salt or a content of sodium sesquicarbonate in the rested sodium hydrogencarbonate crystal particles, thereby evaluating the caking property of the sodium hydrogencarbonate particles.