Calcium hydroxide food grade powder is a refined, high-purity form of hydrated lime (Ca(OH)₂) that meets food safety standards for use as a processing aid. It appears as a white, odorless powder with alkaline properties, and is valued for its ability to adjust acidity, firm textures, and preserve color in various food applications.
What is calcium hydroxide food grade powder used for?
In food production, it is commonly used in the nixtamalization of corn, where it softens kernels and enhances flavor and nutritional value. It also serves as a firming agent in pickles, a pH regulator in cocoa processing, and a clarifying agent in sugar refining. Because it is highly alkaline, only small amounts are needed to achieve the desired effect.
How do you choose a reliable calcium supplier?
When sourcing calcium hydroxide food grade powder, look for suppliers who provide a certificate of analysis (COA) confirming food-grade compliance and low heavy metal content. Many buyers turn to a specialized calcium manufacturer with experience in food applications to ensure consistent particle size and purity. Working with a reputable calcium supplier also guarantees traceability and timely delivery, which is critical for production schedules.
China calcium salts producers are among the world's leading exporters of food-grade calcium hydroxide, offering competitive pricing and large-scale capacity. However, quality can vary, so always verify certifications such as FSSC 22000 or ISO 22000 before committing to a bulk order.
Is calcium hydroxide food grade powder safe to handle?
Yes, when used according to good manufacturing practices, it is safe for food use. However, the powder is strongly alkaline and can irritate skin, eyes, and respiratory tract. Proper personal protective equipment (PPE), including gloves, goggles, and a dust mask, is recommended during handling. Store it in a cool, dry place away from acids to maintain stability.
常见问题
Is calcium hydroxide food grade powder the same as pickling lime?
Yes, pickling lime is essentially food-grade calcium hydroxide. It is used to firm up pickles and other preserved vegetables by strengthening cell walls. However, it must be thoroughly rinsed before consumption because of its high alkalinity.
What is the difference between food grade and technical grade calcium hydroxide?
Food grade calcium hydroxide is produced with stricter controls on heavy metals, arsenic, and other contaminants to meet edible safety standards. Technical grade may contain higher impurity levels and is intended for industrial uses like water treatment or construction. Always specify food grade for any application involving human consumption.
How should I store calcium hydroxide food grade powder?
Store it in a tightly sealed container in a cool, dry area, away from acids and moisture. Exposure to air can cause it to absorb carbon dioxide and form calcium carbonate, reducing its effectiveness. Properly stored, it retains quality for at least two years.
