Calcium Iodide Hydrate

Updated: 2026-09-13

Overview

Calcium Iodide Hydrate (CaI2·xH2O) is an inorganic compound formed by combining calcium iodide with water molecules. It is widely used in industrial and laboratory settings due to its solubility and iodine content. The compound is typically available in hydrated forms, with the exact number of water molecules varying. The hydrate is particularly valued for its role in pharmaceuticals, where it serves as an iodine supplement, and in photography as a light-sensitive material. Its hygroscopic nature requires careful handling and storage to maintain stability and efficacy.

Physical and Chemical Properties

Calcium Iodide Hydrate appears as a white to yellowish crystalline solid, highly soluble in water and alcohol. It is hygroscopic, meaning it readily absorbs moisture from the air, which can affect its weight and purity. The compound is also deliquescent, often forming a liquid solution when exposed to humid conditions. Its chemical properties include being a strong reducing agent, making it useful in various synthesis reactions. The melting point of the anhydrous form is approximately 779°C, though the hydrate may decompose before reaching this temperature. Proper handling is essential to prevent degradation and ensure consistent performance in applications.

Main Applications

In the pharmaceutical industry, Calcium Iodide Hydrate is used as a source of iodine, essential for thyroid function and metabolic regulation. It is also employed in the preparation of iodinated compounds for medical imaging and therapeutic agents. Photography utilizes the compound for its light-sensitive properties, particularly in specialized photographic emulsions. Additionally, it serves as a reagent in chemical synthesis, where its reducing capabilities are leveraged to facilitate reactions. Industrial applications include use in electrolytes and as a stabilizer in certain manufacturing processes.

Safety and Storage

Calcium Iodide Hydrate can be irritating to the skin, eyes, and respiratory system. Proper personal protective equipment (PPE), such as gloves and goggles, should be worn when handling the compound. In case of contact, rinse thoroughly with water and seek medical advice if irritation persists. Storage requires a cool, dry environment, preferably in airtight containers to prevent moisture absorption. Exposure to light should be minimized to avoid degradation. Labeling and segregation from incompatible substances, such as strong oxidizing agents, are critical to maintaining safety and product integrity.

B2B Procurement Guide

When procuring Calcium Iodide Hydrate, specify the required hydration level and purity, as these factors significantly impact performance. Industrial buyers should verify supplier certifications and request material safety data sheets (MSDS) to ensure compliance with safety standards. Bulk purchases may offer cost advantages, but consider storage capabilities to prevent moisture-related issues. Lead times and logistical arrangements should be confirmed, especially for international shipments. Establish clear quality control protocols to test incoming batches for consistency and purity.