High purity calcium oxide food grade is a refined form of calcium oxide (CaO) that meets strict food safety standards, typically containing at least 99% CaO with minimal heavy metals and other impurities. It is used as a food additive, acidity regulator, and calcium fortifier in products such as baked goods, beverages, and dietary supplements.
What makes high purity calcium oxide food grade different?
Unlike industrial-grade lime, food-grade calcium oxide is produced under controlled conditions to ensure low levels of arsenic, lead, and other contaminants. It must comply with regulations like FCC (Food Chemicals Codex) or E529, making it safe for human consumption. This purity also ensures consistent performance in pH adjustment and calcium enrichment.
How is high purity calcium oxide food grade used?
In food processing, it adjusts acidity in canned goods, stabilizes cocoa products, and fortifies plant-based milks. It also serves as a processing aid in sugar refining and a calcium source in supplements. Because it reacts with water to form calcium hydroxide, it is often used in slurry form for precise dosing.
Where to source high purity calcium oxide food grade?
When selecting a calcium supplier, verify their certifications, such as ISO 22000 or FSSC 22000, and request a certificate of analysis for each batch. Many buyers look for a calcium manufacturer in China, where large-scale production and export expertise are well established. A reputable china calcium salts supplier can offer competitive pricing and reliable logistics, but always audit the supply chain to ensure food safety compliance.
What should you check before buying?
Confirm the product meets your local food additive regulations and request samples for testing. Check particle size, reactivity, and packaging to prevent moisture absorption. A trustworthy calcium manufacturer will provide full traceability and technical support.
常见问题
Is high purity calcium oxide food grade safe to consume?
Yes, when it meets food-grade standards such as FCC or E529, it is safe for use as a food additive. However, it is highly alkaline and must be handled and dosed according to regulations. Direct consumption of the raw powder is not recommended without proper dilution.
What is the difference between food grade and industrial grade calcium oxide?
Food grade calcium oxide has stricter limits on heavy metals and contaminants, and is produced under hygienic conditions. Industrial grade may contain higher impurities and is not intended for human consumption. Always verify the certificate of analysis for food applications.
How should high purity calcium oxide food grade be stored?
Store it in a cool, dry place in tightly sealed containers to prevent reaction with moisture and carbon dioxide. Keep away from acids and organic materials. Proper storage maintains its purity and reactivity for food processing.
