Overview
Nitroterephthalic acid is a nitro-substituted derivative of terephthalic acid, widely used as a chemical intermediate in various industrial processes. It is synthesized through the nitration of terephthalic acid, resulting in a compound with both carboxylic acid and nitro functional groups. This dual functionality makes it valuable in organic synthesis, particularly in the production of dyes and pharmaceuticals. The compound is characterized by its white crystalline appearance and moderate solubility in polar solvents. Its stability under normal conditions makes it suitable for storage and handling in industrial settings, though precautions must be taken to avoid decomposition at high temperatures.
Physical and Chemical Properties
Nitroterephthalic acid has a molecular weight of 211.13 g/mol and typically appears as a white to off-white crystalline powder. It melts at approximately 230-235°C, though its boiling point is not well-documented due to its tendency to decompose at elevated temperatures. The compound is soluble in water, ethanol, and acetone, which facilitates its use in various chemical reactions. Key chemical properties include its reactivity as a carboxylic acid and its nitro group, which can participate in reduction and substitution reactions. These properties make it a versatile building block in organic synthesis. However, it should be handled with care as it may cause skin and eye irritation upon contact.
Main Applications
Nitroterephthalic acid is primarily used as an intermediate in the synthesis of dyes, pharmaceuticals, and specialty chemicals. In the dye industry, it serves as a precursor for azo dyes, which are widely used in textiles and printing. Its nitro group can be reduced to form amino derivatives, which are further utilized in pharmaceutical formulations. Additionally, this compound finds applications in polymer chemistry, where it is incorporated into polyesters and other high-performance materials. Its ability to act as a cross-linking agent enhances the thermal and mechanical properties of these polymers, making them suitable for advanced industrial applications.
Safety and Storage
Proper handling and storage of nitroterephthalic acid are essential to ensure safety in industrial environments. The compound should be stored in a cool, dry, well-ventilated area away from incompatible materials such as strong oxidizers and bases. Containers should be tightly sealed to prevent moisture absorption and contamination. Personal protective equipment (PPE), including gloves, goggles, and lab coats, should be worn when handling the chemical to avoid skin and eye contact. In case of exposure, affected areas should be rinsed immediately with plenty of water. Spills should be contained and cleaned up promptly using appropriate absorbent materials.
B2B Procurement Guide
When procuring nitroterephthalic acid for industrial use, buyers should prioritize suppliers who provide comprehensive documentation, including material safety data sheets (MSDS) and certificates of analysis (CoA). These documents ensure the product meets quality and safety standards. Price varies depending on quantity and supplier, with common ranges between $50-$150 per kilogram. Bulk purchases may offer cost advantages, but buyers should also consider logistics and storage requirements. It is advisable to request samples for quality testing before large-scale procurement and to establish long-term relationships with reliable suppliers to ensure consistent supply.
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