Overview
Gold oxide (Au2O3) is an inorganic compound primarily used in specialized industrial applications. It is a brown or black powder that is insoluble in water but soluble in hydrochloric acid. Gold oxide is known for its oxidizing properties and decomposes upon heating. This compound is not commonly encountered in everyday applications but plays a critical role in industries such as electronics, where it is used in the production of semiconductors and other components. Its stability and reactivity make it valuable for specific chemical processes.
Physical and Chemical Properties
Gold oxide appears as a brown or black powder with a molecular weight of 441.93 g/mol. It is insoluble in water but dissolves in hydrochloric acid, forming chloroauric acid. The compound decomposes at temperatures around 150°C, releasing oxygen and forming metallic gold. Gold oxide is an oxidizing agent and should be handled with care to avoid reactions with reducing substances. Its stability under normal conditions makes it suitable for storage in dry, cool environments, but it should be kept away from incompatible materials.
Main Applications
Gold oxide is primarily used in the electronics industry for the production of semiconductors and thin-film transistors. Its ability to form stable layers makes it ideal for these applications. In catalysis, gold oxide serves as a precursor for gold nanoparticles, which are used in various chemical reactions. It is also employed in gold plating processes, where it provides a source of gold ions for electroplating solutions.
Safety and Storage
Gold oxide should be handled with appropriate safety measures, including gloves and eye protection, to avoid skin contact and inhalation. It is not highly toxic but can cause irritation upon exposure. Storage conditions should include a cool, dry environment away from reducing agents and incompatible materials. Proper labeling and secure containers are essential to prevent accidental reactions or contamination.
B2B Procurement Guide
When procuring gold oxide, buyers should verify the purity and quality of the product through certificates of analysis (CoA) and safety data sheets (SDS). Reputable suppliers should provide these documents upon request. Prices for gold oxide can vary significantly based on purity and quantity, typically ranging from $50 to $200 per gram. Bulk purchases may offer cost savings, but buyers should ensure proper storage and handling to maintain product integrity.
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