Calcium Carbonate Powder for Eating
Calcium Oxide (CaO) Content:≥ 54%–55%
Iron Oxide (Fe₂O₃):≤ 0.03%–0.05%
Magnesium Oxide (MgO) Content:≤ 0.5%–1.0%
Silicon Dioxide (SiO₂) Content:≤ 1.0%–2.0%
Whiteness:≥ 85%–90%
Moisture:≤ 0.5%
High Purity for Safe Consumption
We offer calcium carbonate powder for food applications. This product reflects our commitment to safety and health. We use high-purity, low-iron natural limestone as the raw material. It is processed through crushing, screening, magnetic separation, and fine classification. Our factory is certified under ISO9001, ISO14001, and ISO45001. We maintain a complete quality management system. We do not simply supply raw materials-we help protect food safety. Our calcium carbonate powder for eating is produced to the highest purity standards.
Key Specifications and Strict Impurity Control
We maintain strict quality control throughout the entire process. Iron and heavy metal content are carefully controlled to ensure the product is pure and safe. The table below shows our detailed specifications. We use high-purity natural limestone and an iron removal process. Our purity is higher than that of standard limestone sand. We guarantee that calcium oxide (CaO) content remains stable at ≥ 54%–55%. Low iron content directly contributes to high whiteness. Our calcium carbonate powder for eating is a premium-grade product.
|
Parameter |
Technical Index |
Test Method |
Note |
|
Product Name |
Low-Iron Limestone Sand |
/ |
Natural limestone processed with iron removal |
|
Calcium Carbonate (CaCO₃) Content |
≥ 96%–98% |
Titration or instrumental analysis |
Purity higher than standard sand |
|
Calcium Oxide (CaO) Content |
≥ 54%–55% |
Calculated |
Stable calcium content |
|
Iron Oxide (Fe₂O₃) |
≤ 0.03%–0.05% |
Phenanthroline spectrophotometry |
Key control index; high-end requirements may be ≤300 ppm |
|
Magnesium Oxide (MgO) Content |
≤ 0.5%–1.0% |
Atomic absorption spectrometry |
Low magnesium is beneficial for glass melting |
|
Silicon Dioxide (SiO₂) Content |
≤ 1.0%–2.0% |
Gravimetric or colorimetric method |
Impurity control |
|
Whiteness |
≥ 85%–90% |
Whiteness meter |
Low iron directly improves whiteness |
|
Moisture |
≤ 0.5% |
Drying and weighing method |
Lower moisture prevents caking |
Multi-Grade Products for Food and Pharmaceutical Use
We provide multiple grades ranging from 8 to 120 mesh, suitable for industries such as food, pharmaceuticals, and chemicals. The 8–16 mesh size is used by food manufacturers as a base material for calcium tablets and powders. The 30–50 mesh size is used by health product companies as a capsule filler. The 50–80 mesh size disperses well and mixes evenly in foods such as milk powder. We support customized particle sizes and packaging. We can adjust both specifications and packaging according to your needs. We also offer free samples of up to 5 kg for testing.
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