Propyl Acetate[2]
Overview
Propyl Acetate (n-Propyl Acetate) is an organic ester widely used as an industrial solvent due to its balanced evaporation rate and effective solvency for resins, cellulose derivatives, and plastics. It is synthesized via esterification of acetic acid with propanol. As a cost-effective alternative to other acetates like ethyl or butyl acetate, it plays a key role in coatings and ink formulations. The chemical is classified as a volatile organic compound (VOC) but has lower toxicity compared to aromatic solvents. Its fruity odor makes it distinguishable, though industrial-grade variants prioritize functional performance over fragrance. It is commonly shipped in steel drums or bulk tanks for large-scale B2B buyers.
Physical and Chemical Properties
Propyl Acetate is a colorless, mobile liquid with a characteristic ester-like odor. Its low boiling point (101-102°C) ensures rapid evaporation, making it suitable for fast-drying applications. The compound’s density (0.887 g/cm³) is lighter than water, and it forms azeotropes with common solvents like ethanol or hexane. Chemically, it is stable under normal conditions but hydrolyzes slowly in the presence of strong acids or bases. Its flash point is 13°C (closed cup), classifying it as a flammable liquid. The solubility profile shows miscibility with most organic solvents but limited water solubility (1.9 g/100 mL at 20°C), which aids in solvent recovery processes.
Main Applications
The primary use of industrial-grade Propyl Acetate is as a solvent in coatings and inks, where it ensures uniform film formation and quick drying. It is particularly valued in automotive paints, wood coatings, and flexographic printing inks. Its compatibility with nitrocellulose and acrylic resins makes it versatile. In adhesives, it acts as a thinner for synthetic rubber and polyurethane formulations. The chemical industry employs it as a reaction medium or extraction solvent. Additionally, it serves as a cleaning agent for electronics or metal surfaces due to its degreasing properties. Niche uses include flavor/fragrance extraction (food-grade variants) and pharmaceutical intermediates.
Safety and Storage
As a flammable liquid, Propyl Acetate requires storage in tightly sealed containers away from heat, sparks, or open flames. Electrostatic discharge precautions are necessary during transfer. Facilities should use explosion-proof equipment and ground containers to prevent static accumulation. Exposure risks include eye/skin irritation and respiratory tract discomfort upon inhalation of vapors. PPE such as gloves, goggles, and respirators (for high-concentration areas) is recommended. Spills should be contained with inert absorbents and disposed of as hazardous waste. Regulatory compliance with OSHA, REACH, or local VOC emission standards is critical for industrial users.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO certification and detailed product specifications, including purity (≥99%), water content (<0.1%), and acidity levels. Bulk purchases (drums or tankers) typically offer cost advantages, but verify logistics compatibility (e.g., UN packaging codes for flammable liquids). Sample testing for residue or impurity profiles is advised, especially for coating applications where consistency impacts product performance. Contracts should include clauses for batch analysis reports and SDS documentation. Regional price fluctuations may occur due to raw material (acetic acid/propanol) market trends, so long-term agreements with price adjustment mechanisms are beneficial.
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