Calcium oxide high purity food grade is a refined form of lime (CaO) that meets strict purity standards for use in food, beverage, and pharmaceutical applications. It is produced by calcining high-purity limestone and is valued for its ability to regulate acidity, act as a drying agent, and supply calcium in fortified products.
What makes calcium oxide high purity food grade different?
Food-grade calcium oxide must contain minimal heavy metals and other contaminants. It typically meets pharmacopeia or food chemical codex specifications, ensuring safety for human consumption. This purity distinguishes it from industrial-grade lime, which may contain impurities unsuitable for food contact.
Where is calcium oxide high purity food grade used?
Common applications include pH adjustment in juices and canned goods, calcium fortification of cereals and beverages, and as a processing aid in sugar refining. It also serves as a moisture absorber in food packaging and a precursor for calcium salts used in supplements.
How do you choose a reliable calcium supplier?
Look for a calcium manufacturer or calcium supplier that provides a certificate of analysis (CoA) for each batch, detailing purity and contaminant levels. A reputable supplier will also comply with relevant food safety regulations, such as FDA or EU standards, and offer consistent particle size and reactivity. For those sourcing multiple ingredients, a trusted china calcium salts exporter can streamline procurement while maintaining quality.
What should you check before buying?
- Confirm the product meets food-grade or pharmaceutical-grade specifications.
- Request a CoA and, if possible, a third-party test report.
- Verify the supplier's traceability and handling practices.
By prioritizing purity and documentation, you can safely incorporate calcium oxide high purity food grade into your products.
常见问题
Is calcium oxide high purity food grade safe to consume?
Yes, when used according to food regulations, it is safe. It is a permitted food additive in many countries, but it must meet strict purity limits for heavy metals and other contaminants. Always source from a reputable supplier that provides a certificate of analysis.
How should calcium oxide high purity food grade be stored?
Store it in a cool, dry place in tightly sealed containers to prevent reaction with moisture and carbon dioxide. Exposure to air can reduce its effectiveness and purity. Proper storage ensures a longer shelf life and consistent performance.
What is the difference between food grade and industrial grade calcium oxide?
Food grade calcium oxide has lower levels of heavy metals and other impurities, making it safe for human consumption. Industrial grade may contain contaminants that are not acceptable in food or pharmaceutical applications. Always check the specification sheet to confirm the grade.
