Lithium Metaborate

Lithium Metaborate (LiBO₂) is an inorganic compound widely used in analytical chemistry, particularly in sample preparation for X-ray fluorescence (XRF) and inductively coupled plasma (ICP) analysis. It acts as a fusion agent for samples that need to be prepared in a glass-like state, ensuring even and homogenous distribution of elements for accurate measurements. Lithium metaborate is also used in ceramics and glass production as a fluxing agent.

Physical Properties:

Appearance: White, odorless crystalline powder.

Density: Approximately 1.47 g/cm³.

Melting Point: Around 845°C (1,553°F), allowing it to act as a fusion agent for other materials at high temperatures.

Solubility: Soluble in water, especially at high temperatures, and soluble in some acids.

Thermal and Chemical Properties:

High Thermal Stability: Withstands high temperatures, making it ideal for use in fusion processes.

Chemical Reactivity: Acts as a flux by dissolving other materials at high temperatures. In fusion, it helps break down complex sample matrices, allowing for even distribution in glass form.

pH: Lithium metaborate is basic and can slightly affect the pH of the solution or melt it’s in, which can be beneficial in stabilizing certain types of samples during analysis.

Applications:

Analytical Chemistry: Lithium metaborate is essential in preparing samples for XRF and ICP spectroscopy. It helps create a glass bead from powdered samples, which ensures uniform sample presentation and precise elemental analysis.

Ceramics and Glass Production: In ceramics and glass, lithium metaborate acts as a flux, reducing melting temperatures and helping to form glass with improved chemical and thermal properties.

Metal Analysis and Geological Sampling: Commonly used in labs for geochemistry and metallurgy, lithium metaborate helps dissolve and prepare difficult-to-analyze metals, ores, and rocks for accurate elemental measurement.

Handling and Storage:

Storage: Keep in a cool, dry environment to avoid moisture absorption and clumping. Use tightly sealed containers.

Safety Precautions: While generally safe, avoid inhaling dust. Use standard protective equipment like gloves and goggles, especially when handling large amounts or working in a fusion lab setting.