N-Propyl Acetate (NPAC), identified by CAS number 109-60-4, is a clear, colorless liquid ester with a characteristic fruity, pear-like odor. Chemically produced through the esterification of n-propanol with acetic acid, it serves as a medium-boiling solvent within the acetate family. NPAC occupies a strategic performance niche, offering an evaporation rate that sits between the rapid drying of ethyl acetate and the slower profile of n-butyl acetate. This balanced volatility makes it indispensable for controlling the drying kinetics of various formulations. NPAC exhibits exceptional solvency for a wide array of resins, including cellulose nitrates, vinyls, alkyds, and polyesters. Its ability to balance flow and leveling while maintaining high diluent tolerance makes it a staple in the coatings and ink industries. Furthermore, its relatively low toxicity and pleasant aromatic profile allow for its use in sensitive applications such as food-contact packaging inks and personal care products.
* Offers a rapid evaporation rate, enabling quick-drying coatings.
* Serves as an active solvent for a broad spectrum of coating resins.
* Ideal for diverse applications including printing inks, wood, automotive, and industrial coatings.
* Promotes excellent flow, leveling, and blush resistance in formulations.
* Features a mild, low odor, enhancing user comfort.
* Classified as a non-HAP solvent, contributing to safer air quality.
* Exhibits ready biodegradability, aligning with environmental sustainability goals.
* Purity (%wt): 99.5 Min
* Water (%wt): 0.05 Max
* Colour (APHA): 10 Max
* Acidity (as Acetic Acid) (%wt): 0.01 Max
* Specific Gravity @ 20°C: 0.900 – 0.903
* Distillation Range (IBP-DP) (°C): 100.0 – 103.0
* Non-Volatiles (mg/100ml): 5 Max
* Refractive Index @ 20°C: 1.383 – 1.385
* Flash Point (Closed Cup) (°C): 14
* **Coatings:** Utilized as an effective solvent for various resins, enhancing flow, leveling, and ensuring rapid solvent release in paint and lacquer formulations.
* **Inks:** Functions as a fast-drying solvent in flexographic and gravure printing inks, providing excellent solvency, quick drying, and superior flow properties.
* **Adhesives:** Employed in adhesive formulations to dissolve resins efficiently, promote proper wetting of substrates, and help control drying times.
* **Cleaners:** Serves as a powerful solvent in industrial and household cleaning products, effective for degreasing and removing stubborn waxes, oils, and residues.
* **Chemical Intermediates:** Acts as a versatile chemical building block in the synthesis of other organic compounds, including esters and pharmaceuticals.
* **Specialty Solvents:** Applied in niche solvent applications like textile processing, agricultural formulations, and laboratory reagents due to its balanced solvency and evaporation rate.
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