Chromium(III) Nitrate Nonahydrate, with the chemical formula Cr(NO₃)₃·9H₂O, has a CAS number of 7789 - 02 - 8. It appears as a violet crystalline solid. The molar mass of this compound is approximately 400.15 g/mol. It has good solubility in water, forming a clear, violet - colored solution. This high - quality product is offered at a low price, making it an economical choice for various applications.
1. **Chemical Synthesis**: It serves as an important reagent in the synthesis of various chromium - containing compounds. For example, it can be used in the preparation of chromium - based catalysts, which play a crucial role in many chemical reactions, such as oxidation and reduction processes.
2. **Dyeing and Pigment Industry**: Chromium(III) Nitrate Nonahydrate is used in the production of dyes and pigments. The chromium ions can form complexes with organic molecules, resulting in vivid and stable colors. It is often used in the textile industry to dye fabrics and in the ceramics industry to color glazes.
3. **Electroplating**: In electroplating processes, this compound can be used to deposit a thin layer of chromium on the surface of metal objects. The deposited chromium layer provides corrosion resistance and a shiny appearance to the objects.
4. **Research and Development**: Scientists use it in research laboratories to study the properties and reactions of chromium compounds. It can be used in experiments related to coordination chemistry, materials science, and environmental science.
1. **Handling Precautions**: Always wear appropriate personal protective equipment, such as gloves and safety glasses, when handling Chromium(III) Nitrate Nonahydrate. Avoid inhalation of dust and contact with skin and eyes. In case of contact, rinse immediately with plenty of water and seek medical advice.
2. **Solution Preparation**: To prepare a solution, slowly add the required amount of Chromium(III) Nitrate Nonahydrate to water while stirring continuously. The solubility may vary depending on the temperature, so it is advisable to heat the water slightly if necessary.
3. **Reaction Conditions**: When using it in chemical reactions, follow the specific reaction conditions recommended in the literature or experimental protocol. This may include controlling the temperature, pH, and reaction time.
1. **Textile Dyeing**: A textile company was looking for a cost - effective and high - quality dyeing agent. They decided to use Chromium(III) Nitrate Nonahydrate. By preparing a solution of the compound and adjusting the pH and temperature of the dyeing bath, they were able to achieve uniform and bright colors on the fabrics. The dyed fabrics showed excellent color fastness, which significantly improved the quality of their products and increased customer satisfaction.
2. **Catalyst Synthesis**: A research group was working on developing a new chromium - based catalyst for a specific chemical reaction. They used Chromium(III) Nitrate Nonahydrate as the starting material. Through a series of chemical reactions and purification steps, they successfully synthesized the catalyst. The catalyst showed high activity and selectivity in the target reaction, demonstrating the importance of using high - quality raw materials.
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