Overview
Barium bromide (BaBr₂) is a white crystalline solid with the chemical formula BaBr₂. It is highly soluble in water and is known for its hygroscopic properties. The compound is primarily used in industrial and laboratory settings due to its reactivity and utility in chemical synthesis. Barium bromide is synthesized by reacting barium carbonate or barium sulfide with hydrobromic acid. It is commonly utilized in photography as a component in emulsions, as well as in flame retardants and other specialized chemical applications.
Physical and Chemical Properties
Barium bromide has a molecular weight of 297.14 g/mol and a density of 4.78 g/cm³. It melts at 857°C and boils at 1835°C, making it stable under high-temperature conditions. The compound is highly soluble in water, and its solutions conduct electricity well due to the dissociation of Ba²⁺ and Br⁻ ions. Barium bromide is hygroscopic, meaning it readily absorbs moisture from the air. It reacts with strong acids to release hydrogen bromide, a hazardous gas. These properties necessitate careful handling and storage in airtight containers to prevent degradation and ensure safety.
Main Applications
Barium bromide is widely used in the photography industry, where it serves as a key component in photographic emulsions. Its ability to react with silver nitrate makes it valuable for producing light-sensitive materials. In addition to photography, barium bromide is employed as a flame retardant in certain polymers and textiles. It also finds use in chemical laboratories as a reagent for synthesizing other barium compounds and in analytical chemistry for precipitation reactions.
Safety and Storage
Barium bromide is toxic if ingested or inhaled, and it can cause severe irritation to the skin and eyes. Proper personal protective equipment (PPE), such as gloves, goggles, and lab coats, should be worn when handling this compound. Work should be conducted in a fume hood to minimize exposure to dust or vapors. Storage conditions are critical to maintaining the integrity of barium bromide. It should be kept in a cool, dry, well-ventilated area, away from moisture and incompatible substances like strong acids. Containers must be sealed tightly to prevent absorption of water from the air.
B2B Procurement Guide
When procuring barium bromide for industrial or laboratory use, it is essential to source from reputable suppliers who provide certificates of analysis (CoA) and safety data sheets (SDS). Buyers should verify the purity level, which typically ranges from 98% to 99.9%, depending on the application. Bulk purchases may offer cost savings, but proper storage facilities must be available to handle larger quantities safely. Buyers should also consider transportation regulations, as barium bromide may be classified as a hazardous material depending on regional laws.
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