Overview
Indium hydroxide (In(OH)3) is a key intermediate in the production of indium-based materials, particularly for the electronics industry. It serves as a precursor to indium tin oxide (ITO), a transparent conductive oxide widely used in touchscreens, LCDs, and solar panels. The compound is typically synthesized through precipitation reactions from indium salt solutions. Its importance in high-tech applications has grown with the expansion of the display and renewable energy sectors, making it a strategically significant material in advanced manufacturing.
Physical and Chemical Properties
Indium hydroxide appears as a fine white or pale yellow powder with a density of 4.3 g/cm³. It exhibits amphoteric behavior, dissolving in both acids and strong bases. The material decomposes upon heating above 150°C, forming indium oxide (In2O3). Its insolubility in water but solubility in acidic media makes it useful for controlled precipitation processes. The particle size and morphology can significantly affect its performance in downstream applications, particularly when used as a precursor for transparent conductive films.
Main Applications
The primary use of indium hydroxide is in the production of indium tin oxide (ITO), which accounts for over 70% of global indium consumption. ITO films are essential components in flat panel displays, touch screens, and photovoltaic cells. Additional applications include its use as a catalyst in organic synthesis, particularly in hydrogenation reactions. In research settings, it serves as a starting material for various indium-containing compounds. Emerging applications include its potential use in battery technologies and as a component in some types of sensors.
Safety and Storage
While not classified as highly toxic, indium hydroxide requires careful handling due to potential irritation to skin, eyes, and respiratory system. Proper personal protective equipment (PPE) including gloves, goggles, and dust masks should be used when handling the powder form. Storage should be in tightly sealed containers in a dry, cool environment away from strong acids. The material is stable under normal conditions but may absorb moisture or carbon dioxide from air over time, potentially affecting its reactivity in sensitive applications.
B2B Procurement Guide
Industrial buyers should prioritize suppliers that can provide consistent purity levels (typically 99% or higher for electronics applications). Particle size distribution is another critical parameter, especially for thin film deposition processes. Given indium's status as a critical raw material, buyers should establish long-term supply agreements and consider secondary sources or recycling options. Pricing fluctuates with indium metal markets, so periodic market reviews are advisable. For specialized applications, custom particle morphologies or surface treatments may be available from advanced materials suppliers.
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