Aniline, represented by the chemical formula C6H5NH2, stands as the simplest aromatic amine and a cornerstone commodity chemical within the global chemical industry. It is characterized by a phenyl group attached to an amino group, giving it a unique structure that underpins its versatility in numerous synthetic pathways. Aniline is a slightly yellowish to brownish oily liquid with a distinctive, somewhat unpleasant odor described as fishy. It darkens upon exposure to air and light due to oxidation.

Aniline's industrial significance cannot be overstated. Its primary consumption, accounting for the vast majority of global production, lies in the manufacture of precursors for polyurethane polymers. Specifically, it is a key starting material in the production of methylenedianiline (MDA), which is subsequently reacted with phosgene to yield methylene diphenyl diisocyanate (MDI). MDI is a fundamental component in the creation of rigid and flexible polyurethane foams, adhesives, sealants, and elastomers, products integral to construction, automotive, furniture, and insulation sectors.

Beyond its dominant role in polyurethanes, Aniline serves as a crucial intermediate in the production of rubber processing chemicals. Derivatives such as phenylenediamines and diphenylamine are widely utilized as antioxidants and antiozonants in rubber products, extending their lifespan and improving performance in tires, belts, hoses, and other rubber goods. Approximately 9% of global Aniline supply is dedicated to this application, highlighting its importance in the rubber industry.

Historically renowned for its use in the dye industry, Aniline continues to be vital for the synthesis of a variety of dyes and pigments. While its role in synthetic dyes has evolved since the 19th century, it remains a precursor for significant pigments and, notably, for the synthesis of indigo – the blue color found in denim jeans. About 2% of Aniline production goes into dyes and pigments.

Aniline is also a precursor for certain pharmaceutical compounds and agricultural chemicals, including herbicides and insecticides. A notable example in pharmaceuticals is its role as a starting material in the synthesis of paracetamol (acetaminophen), a widely used pain reliever and fever reducer. Its chemical reactivity allows for its transformation into various biologically active molecules.

Understanding the physical and chemical properties of Aniline is crucial for its safe handling and application. It has a molecular weight of 93.13 g/mol, a melting point of -6.3 °C, and a boiling point of 184.4 °C at standard pressure. Its density is approximately 1.02 g/cm³. Aniline has a relatively high flash point of 70 °C (closed cup), indicating it is combustible but requires significant heat to ignite. It is moderately soluble in water (around 36 g/L at 20 °C) and miscible with most organic solvents. It is classified as a toxic substance and requires careful handling due to its potential absorption through the skin and inhalation.

The production of Aniline primarily involves the catalytic hydrogenation of nitrobenzene. This process is conducted under controlled conditions to ensure high purity and yield. The quality of Aniline, often measured by its purity (typically 99.9% or higher for many industrial applications), is critical for downstream processes and the performance of derived products.

Packaging and transportation of Aniline follow strict regulations due to its hazardous nature. It is commonly shipped in various containers, including galvanized drums, IBCs, and ISO tanks, depending on the volume and destination. Compliance with international standards for the transport of hazardous goods is mandatory.

As a leading entity in the chemical supply chain, NINGBO INNO PHARMCHEM CO.,LTD. understands the critical requirements for high-quality Aniline in diverse industrial applications. We are committed to providing reliable access to this essential chemical for manufacturers globally. Seeking a trusted manufacturer or supplier of Aniline? Understanding the current market price for Aniline is essential for procurement planning. Whether you are looking to buy Aniline in bulk quantities or seeking a long-term supply partner, exploring options for purchase involves considering factors such as purity, packaging, logistics, and supplier reputation. NINGBO INNO PHARMCHEM CO.,LTD. aims to facilitate your Aniline sourcing needs with efficiency and expertise.