Overview
Calcium iodide (CaI2) is an inorganic compound composed of calcium and iodine. It is commonly found as a white to yellow crystalline powder and is highly soluble in water. The compound is known for its hygroscopic nature, meaning it readily absorbs moisture from the air. Calcium iodide is primarily used in pharmaceuticals, photography, and as a dietary iodine supplement. In the pharmaceutical industry, calcium iodide is utilized for its iodine content, which is essential for thyroid function. It is also used in photography as a light-sensitive material. Due to its reactivity, proper handling and storage are crucial to maintain its stability and effectiveness.
Physical and Chemical Properties
Calcium iodide exhibits several distinct physical and chemical properties. It has a molecular weight of 293.89 g/mol and a density of 3.956 g/cm³. The compound melts at 779 °C and boils at approximately 1100 °C. Its high solubility in water and alcohol makes it versatile for various applications. One of the key properties of calcium iodide is its hygroscopic nature, which means it can absorb water from the environment and become deliquescent. This property necessitates careful storage to prevent degradation. Additionally, calcium iodide reacts vigorously with water, releasing heat and potentially hazardous fumes. These characteristics underscore the importance of proper handling and storage.
Main Applications
Calcium iodide is widely used in several industries due to its unique properties. In the pharmaceutical sector, it serves as a source of iodine, which is critical for thyroid hormone production. It is also employed in the manufacturing of dietary supplements to address iodine deficiencies. In photography, calcium iodide is used as a light-sensitive material in certain photographic processes. Its ability to react with light makes it valuable for creating high-quality images. Additionally, the compound finds applications in organic synthesis and as a catalyst in various chemical reactions. Its versatility and reactivity make it a valuable component in multiple industrial processes.
Safety and Storage
Handling calcium iodide requires strict adherence to safety protocols. The compound is hygroscopic and can react violently with water, posing risks of heat release and fume generation. Proper personal protective equipment (PPE), including gloves and goggles, should be worn when handling the substance. Storage conditions are equally critical. Calcium iodide should be kept in a cool, dry place, away from moisture and direct sunlight. Sealed containers are recommended to prevent absorption of atmospheric moisture. In case of exposure, immediate medical attention may be necessary, particularly if the compound is inhaled or comes into contact with skin or eyes.
B2B Procurement Guide
When procuring calcium iodide for industrial or pharmaceutical use, several factors should be considered. Purity is a key criterion, as impurities can affect the compound's performance in specific applications. Buyers should request certificates of analysis (CoA) from suppliers to verify purity levels. Bulk purchases often come with cost advantages, but it's essential to assess storage capabilities to prevent degradation. Reputable suppliers with a track record of reliability and quality assurance should be prioritized. Additionally, buyers should inquire about packaging options to ensure the product remains stable during transportation and storage.
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