Calcium Hydroxide It is also called pickling lime and applied in the field sucha as drinking water, food additive, agriculture& forestry, compression of pharmatical pills, toothpaste, water paint and so on. We are expert in producing food grade hydrated lime and providing applications advice. This product has been approved by the Jiangsu Food and Drug Administration and Center for Disease Control and Prevention of Jiangsu Province, China, and they also can meet the request of FCC, USP, BP, DIN EN12518 for the treatment of water for human consumption and those of the Drinking Water Ordinance.