barium carbonate cas no

Barium Carbonate Understanding Its Properties, Uses, and Safety Measures

Barium carbonate, with the chemical formula BaCO3 and the CAS number 513-77-9, is a white crystalline compound fundamental in several industrial and scientific applications. This inorganic salt is synthesized through the reaction of barium hydroxide or barium oxide with carbon dioxide. It is pivotal in various fields, including ceramics, glass production, and the manufacturing of certain chemicals.

Properties of Barium Carbonate

Barium carbonate is characterized by its white solid appearance and insolubility in water, making it stable under various conditions. It has a molar mass of 197.34 g/mol and a density of approximately 4.29 g/cm³. Furthermore, barium carbonate decomposes upon heating, producing barium oxide and carbon dioxide. This thermal instability is a critical property that manufacturers must consider when using the compound in high-temperature applications.

In addition to its thermal properties, barium carbonate is notable for its relatively high melting point of around 1,770 °C (3,220 °F), making it suitable for use in processes that require stable materials at elevated temperatures. Its chemical stability and ability to withstand high temperatures play essential roles in its applications across various industries.

Applications of Barium Carbonate

1. Ceramics and Glass

One of the most significant applications of barium carbonate is in the ceramics industry. It acts as a flux in ceramic glazes, lowering the melting point of silica and allowing for easier shaping and forming of ceramic products. The addition of barium carbonate to glazes enhances their durability, color, and aesthetic appeal by imparting vibrant colors that are resistant to fading.

In glass manufacturing, barium carbonate is utilized to improve glass's physical properties, such as strength and clarity. It is particularly beneficial in producing specialty glass types, including optical glass and lead-glass, where precise optical characteristics are essential.

2. Chemical Production

Barium carbonate is also a critical intermediary in producing other barium compounds, such as barium chloride and barium sulfate. These compounds are used in various applications, including radiology as barium sulfate for medical imaging and in oil and gas drilling fluids.

Additionally, the compound serves as a reagent in chemical synthesis, contributing to various organic and inorganic reactions. It is frequently employed in pharmaceutical formulations, where barium compounds are used for diagnostic purposes.

3. Environmental Applications

Another vital application of barium carbonate is in environmental management, where it plays a role in the removal of contaminants. Barium carbonate can precipitate heavy metals from wastewater, aiding in the treatment of industrial effluents and contributing to environmental protection efforts.

Safety and Handling Considerations

While barium carbonate is widely used, it is essential to handle this compound with care due to its potential toxicity. The compound can be hazardous if ingested or inhaled, as barium ions can accumulate in the body and lead to various health problems. Thus, it is classified as moderately toxic.

To ensure safety, workers handling barium carbonate should wear appropriate personal protective equipment (PPE), including gloves, masks, and goggles, to prevent skin contact or inhalation. Good industrial hygiene practices, such as regular hand washing and work area cleanliness, are vital in minimizing exposure risks.

Conclusion

Barium carbonate is a versatile compound with diverse applications that significantly impact various industries, from ceramics to environmental management. Understanding its properties, uses, and safety measures is essential for professionals dealing with this compound, ensuring efficient and secure utilization. As industries continue to evolve, the role of barium carbonate is likely to expand, highlighting its importance in modern manufacturing and technology.