Calcium Carbonate Oyster Shell Powder CAS 471-34-1

Calcium Carbonate (Oyster Shell Powder) – Natural Calcium Source for Food and Industry

Basic Information

• CAS Number: 471-34-1

• Molecular Formula: CaCO₃

• Molecular Weight: 100.09 g/mol

• Appearance: White or almost white powder

• Packaging: 25 kg bags (inner food-grade polyethylene bag, outer composite paper bag) – custom packaging available

• Storage: Store in a dry, clean, cool, and well‑ventilated place. Shelf life: 2 years under recommended conditions.

Overview
Calcium carbonate derived from oyster shells is a natural, biologically sourced material. Eggshells, snail shells, and most marine shells are primarily composed of calcium carbonate and serve as practical industrial sources. Recently, oyster shells have gained recognition as both a source of dietary calcium and an industrial raw material.

Key Benefits as a Calcium Supplement

• Natural origin – safer, better digested, and absorbed by the human body.

• One of the best calcium sources, with calcium content three times higher than calcium lactate and four times higher than calcium gluconate.

• Superior nutritional indicators (absorption rate, utilization rate, and animal weight gain) compared to milk calcium.

• Odorless, with no side effects, making it suitable for food and pharmaceutical industries.

Additional Applications

• Food additive: Used as a flavor enhancer, alkaline agent, dough conditioner, and anticaking agent.

• Industrial uses: Acts as a filler in plastics, rubber, paints, and paper; also used in the production of cement and lime.

Quality Assurance
Produced from high‑purity oyster shells, processed to meet food‑grade standards. Free from contaminants and heavy metals.

Handling and Storage

• Keep in original sealed packaging to prevent moisture absorption and contamination.

• Avoid exposure to strong acids, which may cause decomposition with CO₂ release.