Overview
n-Propylamine is a primary amine with a three-carbon alkyl chain, belonging to the aliphatic amine family. It is industrially produced by the reaction of propanol with ammonia under catalytic conditions. As a versatile chemical intermediate, it serves as a building block for numerous derivatives. The global market for n-propylamine is primarily driven by demand from the pharmaceutical and agricultural sectors, with Asia being the dominant production region.
Physical and Chemical Properties
The compound exhibits typical amine characteristics - it's highly basic (pKb ~3.4) and forms salts with acids. Its low boiling point makes it volatile at room temperature, requiring careful handling. n-Propylamine shows excellent solubility in both polar and non-polar solvents, a property exploited in formulation chemistry. The density is lower than water (0.719 g/cm³), and it forms azeotropes with several common solvents including water (azeotrope boils at 57°C containing 28% amine).
Main Applications
In pharmaceuticals, n-propylamine is used to synthesize local anesthetics (e.g., procaine derivatives) and antihistamines. The agrochemical industry utilizes it in the production of herbicides and pesticides. The rubber industry employs it as an accelerator precursor. Other applications include use as a corrosion inhibitor in oilfield chemicals and as a precursor for specialty surfactants in personal care products.
Safety and Storage
n-Propylamine is classified as flammable liquid (Category 2) and causes severe skin burns (Category 1B). Storage tanks should be grounded and bonded to prevent static discharge. Recommended storage temperature is below 30°C in NSF-approved containers (stainless steel or polyethylene). Containers should be clearly labeled and separated from strong oxidizers. Spill containment measures should include acid-resistant materials for neutralization.
B2B Procurement Guide
Industrial buyers should specify technical grade (typically 99% purity) or higher for pharmaceutical applications. Bulk shipments (ISO tanks) offer cost advantages for quantities above 5 metric tons. Key supplier qualifications should include REACH compliance, proper transportation certifications (UN no. 1277), and batch analysis reports. Just-in-time delivery is recommended due to the chemical's volatility and flammability risks.
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