Calcium oxide food grade quicklime wholesale refers to the bulk purchasing of high-purity calcium oxide (CaO) that meets food safety standards for use as a processing aid, pH regulator, or mineral source. Unlike industrial-grade lime, food-grade quicklime must comply with strict purity limits for heavy metals and other contaminants.
What makes calcium oxide food grade different from industrial lime?
Food-grade calcium oxide is produced under controlled conditions to minimize impurities such as arsenic, lead, and mercury. It must meet recognized food chemical standards, often verified through a certificate of analysis (COA) for each batch. This documentation is essential for food manufacturers who need to demonstrate compliance during audits.
How do you evaluate a wholesale calcium supplier?
When sourcing from a calcium supplier, request a current COA, a safety data sheet (MSDS), and proof of food safety certifications such as FSSC 22000 or ISO 22000. Reliable suppliers also provide consistent particle size distribution and low moisture content, which affect reactivity and mixing performance in food applications. If you work with a calcium manufacturer in China, verify their export history and ability to supply consistent batches over time.
What packaging and logistics options are common for bulk orders?
Wholesale food-grade quicklime is typically shipped in 25 kg multi-wall bags, 500 kg or 1,000 kg jumbo bags, or bulk tankers for very large volumes. Because calcium oxide reacts with moisture and carbon dioxide in air, packaging must include moisture-barrier liners. For international orders, especially from china calcium salts producers, confirm that the supplier uses desiccant protection and provides proper customs documentation.
Which food applications use food-grade quicklime?
Common uses include adjusting pH in corn nixtamalization, clarifying sugar juices, and fortifying certain mineral blends. In all cases, the material must be handled according to good manufacturing practices and stored in a dry, sealed environment to maintain quality.
常见问题
Is food-grade quicklime the same as industrial quicklime?
No. Food-grade quicklime has stricter limits on heavy metals and other contaminants, and it is produced under conditions that meet food safety standards. Industrial quicklime may contain higher impurity levels and is not intended for food use.
What should I check on a certificate of analysis for food-grade calcium oxide?
Look for assay (purity) percentage, heavy metal limits such as lead and arsenic, moisture content, and particle size. The COA should correspond to the specific batch you are purchasing and be issued by an accredited laboratory.
How should food-grade quicklime be stored after delivery?
Store it in a dry, sealed container away from moisture and carbon dioxide to prevent reaction and loss of quality. Keep bags closed and use desiccant protection if the environment is humid.
