English Name: n-Propyl Acetate (also known as Propyl Acetate, Acetic Acid n-Propyl Ester)
CAS No.: 109-60-4
Molecular Formula: C₅H₁₀O₂
Molecular Weight: 102.13
Appearance: Colorless transparent liquid at room temperature
Odor: Characteristic fruity fragrance
Physical and Chemical Properties
Melting Point: -95℃
Boiling Point: 102℃
Density: 0.888 g/cm³ (typical value at 20℃)
Flash Point: 13℃ (closed cup)
Solubility: Slightly soluble in water; miscible with most organic solvents such as ethanol, ether, ketones, esters, and oils.
Saturated Vapor Pressure: 3.3 kPa (at 20℃)
Critical Temperature: 276.2℃
Critical Pressure: 3.33 MPa
Ignition Temperature: 450℃
Upper Explosive Limit (V/V): 8.0%
Lower Explosive Limit (V/V): 2.0%
Applications
Solvent: As an excellent solvent, it is widely used in the production of coatings, inks, nitrocellulose lacquers, varnishes, and various resins. It effectively dissolves film-forming substances and adjusts the viscosity of coating/ink systems, ensuring smooth application and uniform film formation.
Fragrance and Flavor: Primarily used in formulating flavors such as pear, honey, banana, apple, alcoholic beverages, and gooseberry. It is compliant with food and cosmetic safety standards, adding a natural, fresh fruity note to products like beverages, candies, perfumes, and cosmetics.
Safety Information
Toxicity: Classified as slightly toxic. It has irritant effects on the eyes and upper respiratory tract mucosa. Inhalation of high concentrations may cause symptoms including nausea, burning sensation in the eyes, chest tightness, fatigue, and can lead to anesthesia in severe cases.
Hazardous Characteristics: Flammable. Its vapor can form an explosive mixture with air; exposure to open flames or high heat may trigger combustion or explosion. It reacts violently with oxidizing agents (e.g., hydrogen peroxide, nitric acid).
Protective Measures:
When potential exposure to its vapor exists, wear a self-priming filter-type gas mask (half-mask), chemical safety goggles, anti-static work clothes, and rubber gloves.
Avoid using tools that may generate sparks (e.g., iron tools) during operation to prevent ignition of vapors.
UN Dangerous Goods Shipping Number: UN 1276 (Class 3 Flammable Liquid, Packing Group II)