Desiccants such as 1 and quicklime desiccant are currently used in the most common "snow cakes", but quicklime desiccant has been gradually eliminated because of its strong alkali corrosiveness, which often hurts the eyes of children or the elderly.
2. Silica gel desiccant such as xylitol is used, which is also the only desiccant approved by the European Union.
3. Montmorillonite desiccant is widely used in products that cannot be sealed by oil seal or gas phase, which is harmless to human body.
4. Calcium chloride desiccant is used as calcium enhancer, curing agent, chelating agent and desiccant in food industry.