Indium nitrate
Properties
Chemical formula: In(NO₃)₃ / In(NO₃)₃·xH₂O for hydrates
Name: Indium(III) nitrate / indium nitrate
CAS No.: 13770-61-1 (anhydrous), 207398-97-8 (hydrate)
Molar mass: 300.83 g/mol (anhydrous compound)
Color: white
Form: crystalline powder or hydrated crystalline agglomerates
Solubility: highly soluble in water, ethanol and isopropanol
Properties: strongly hygroscopic
Thermal decomposition: above approx. 240 °C with formation of In₂O₃
Indium(III) nitrate is a water-soluble inorganic indium salt. It is commonly supplied as a fine, white, strongly hygroscopic crystalline powder or as hydrated crystals with the general composition In(NO₃)₃·xH₂O, including trihydrate and pentahydrate forms.
Indium nitrate is highly soluble in water and polar organic solvents such as ethanol and isopropanol. This property makes it suitable for preparing homogeneous solutions with precisely controlled composition for wet-chemical and thin-film processes.
Hydrated forms begin to release crystal water at temperatures starting around 100 °C. Above approximately 240 °C, the compound decomposes with the release of nitrogen oxides, NOx, and forms indium(III) oxide, In₂O₃.
Because of its comparatively low decomposition temperature, indium nitrate is used as a solution-based precursor for functional indium compounds and oxide thin films. It is suitable for Sol-Gel processing, spray pyrolysis, chemical vapor deposition (CVD) and other solution-based synthesis methods.
Industrial production is based on dissolving high-purity indium metal or indium(III) hydroxide in concentrated nitric acid, followed by controlled crystallization.
Indium nitrate is used in the preparation of transparent conductive oxide materials, including indium tin oxide (ITO) and indium zinc oxide (IZO). It also serves as a precursor for solution-processed oxide semiconductors such as InGaZnO / IGZO used in thin-film transistors and display technologies.
Indium and its compounds are particularly important in thin-film coatings, semiconductor technology, catalysis and nanomaterial synthesis. Would you like to buy indium nitrate? Auremo can provide information about available purity grades and delivery conditions. The indium price, indium metal price and indium price per kg primarily refer to metallic indium, while the indium nitrate price depends on purity, product form, quantity and material specifications.
Advantages
• High solubility in water and alcohols
• Suitable for precisely formulated process solutions
• Comparatively low decomposition temperature
• Thermal conversion to indium oxide In₂O₃
• High-purity grades available up to 99.999% (5N)
• Suitable for Sol-Gel synthesis
• Applicable in spray pyrolysis and CVD processes
• Versatile precursor for wet-chemical synthesis
Applications
• Thin-film and coating technology
• Transparent conductive ITO coatings
• Transparent conductive IZO coatings
• Sol-Gel processing
• Spray pyrolysis
• Chemical vapor deposition (CVD)
• InGaZnO / IGZO oxide semiconductors
• Thin-film transistors (TFT)
• Flat-panel and flexible displays
• Impregnation of supported catalysts
• Organic synthesis
• Production of indium hydroxide and indium sulfide
• Nanoparticle and quantum-dot synthesis
Auremo offers indium nitrate and other high-purity specialty materials for industrial, research and advanced technical applications. If you have any questions about purity, hydrate form, available quantities or delivery conditions, please contact us directly.
