What Is Dibutylamine?
Dibutylamine, a clear, colorless liquid, is a secondary amine widely recognized in the chemical industry. It is officially named N-butylbutan-1-amine, with alternative names including N-butyl-butanamine and di-n-butylamine.
Uses of Dibutylamine
This compound plays a crucial role in various applications such as rubber chemicals, corrosion inhibitors, surfactants, pharmaceuticals, agrochemicals, dyes, mineral flotation agents, and emulsifiers, highlighting its versatility in industrial usage.
1. Rubber Chemicals
In rubber manufacturing, dibutylamine serves as a vulcanization accelerator, a critical additive for enhancing rubber elasticity through sulfur bonding. This process significantly improves the production efficiency and quality of rubber products.
2. Corrosion Inhibitor
As a corrosion inhibitor, dibutylamine protects metals from corrosion, especially in acidic environments. It forms a protective ammonium ion layer on the metal surface, demonstrating its effectiveness in corrosion prevention.
Properties of Dibutylamine
Dibutylamine (C8H19N) has a molecular weight of 129.24 and is identified by the CAS number 111-92-2. It remains liquid at room temperature, with a boiling point of 160°C and a flash point of 52°C. Its density ranges from 0.756 to 0.761 g/ml at 20°C, and it emits an ammonia-like odor. Notably, dibutylamine is soluble in alcohol, ether, water, and acetone, and is characterized by its flammable and highly corrosive properties.
The compound’s pH level of 11.5 and a pKa of 11.31 for its conjugated acids indicate its basic nature and acid strength, respectively.
Other Information on Dibutylamine
1. Production Method of Dibutylamine
Dibutylamine can be synthesized through two primary methods: either by reacting ammonia with butanol or butyl chloride in the presence of alumina or silica catalysts at high temperatures, or through the dehydrogenation of ammonia, butanol, and hydrogen under a catalyst.
2. Legal Information
Regulated under various safety and environmental laws, dibutylamine is classified according to its flammability and corrosive nature, underscoring the importance of adhering to legal standards in its handling and storage.
3. Precautions for Handling and Storage
Handling precautions include avoiding contact with oxidizing agents and using protective gear. In case of fire, suitable extinguishing media such as water spray or foam should be used. For storage, dibutylamine should be kept in a cool, well-ventilated area away from light to prevent degradation.