Overview
2-Nitrotoluene, commonly referred to as o-nitrotoluene, is an organic compound primarily used as an intermediate in the synthesis of various industrial products. It is one of the three isomers of nitrotoluene, distinguished by the nitro group's position on the benzene ring. The compound is produced through the nitration of toluene, a process that requires controlled conditions to ensure yield and purity. In industrial applications, 2-nitrotoluene is valued for its role in producing dyes, agrochemicals, and pharmaceuticals. Its chemical structure makes it a versatile building block for further chemical transformations. Despite its utility, the compound poses significant health and environmental risks, necessitating strict handling protocols.
Physical and Chemical Properties
2-Nitrotoluene is a pale yellow liquid with a characteristic aromatic odor. It has a molecular weight of 137.14 g/mol and a density of 1.16 g/cm³. The compound melts at -9.5 °C and boils at 222 °C, making it stable under typical storage conditions. Its solubility in water is limited, but it dissolves readily in organic solvents like ethanol and ether. Chemically, 2-nitrotoluene is reactive due to the presence of the nitro group, which can participate in reduction and substitution reactions. This reactivity is harnessed in industrial processes to create derivatives such as toluidines and other intermediates. However, the nitro group also contributes to the compound's toxicity and flammability, requiring careful handling.
Main Applications
The primary use of 2-nitrotoluene is as an intermediate in the manufacture of dyes, particularly azo dyes, which are widely used in textiles and printing. The compound's nitro group can be reduced to form aminotoluene, a precursor for dyes like toluidine red and other colorants. In the pharmaceutical industry, 2-nitrotoluene serves as a building block for drugs such as local anesthetics and antipyretics. Additionally, it is used in agrochemical production, including pesticides and herbicides. Its versatility in chemical synthesis makes it a valuable raw material for various industrial sectors.
Safety and Storage
2-Nitrotoluene is classified as toxic and harmful if inhaled, ingested, or absorbed through the skin. Prolonged exposure can lead to health issues such as methemoglobinemia and liver damage. Proper personal protective equipment (PPE), including gloves and respirators, is essential when handling the compound. Storage conditions should prioritize cool, dry, and well-ventilated areas, away from oxidizing agents and sources of ignition. Containers must be tightly sealed to prevent leaks and vapor release. Spills should be contained immediately using absorbent materials, and contaminated areas must be cleaned thoroughly to avoid environmental contamination.
B2B Procurement Guide
When procuring 2-nitrotoluene, buyers should prioritize suppliers with certifications such as ISO or GMP to ensure product quality and consistency. Key specifications to verify include purity (typically ≥98%) and the absence of impurities like other nitrotoluene isomers. Logistics planning is critical due to the compound's hazardous nature. Ensure transportation complies with regulations for toxic substances, and confirm that storage facilities meet safety standards. Bulk purchases may offer cost advantages, but consider storage capacity and shelf-life constraints to avoid degradation or safety risks.
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