Dipropylene Glycol N-Butyl Ether (DPNB), identified by CAS number 29911-28-2, is a high-performance, slow-evaporating, hydrophobic glycol ether. As a member of the P-series glycol ether family, it …
Superior Coalescing Efficiency: Significantly reduces the minimum film-forming temperature (MFFT) in latex systems, ensuring a smooth, continuous, and durable film.
High Solvency Power: Effectively dissolves a wide range of organic resins and greasy soils, enhancing the performance of both coatings and cleaning agents.
Slow Evaporation Rate: Provides extended “open time,” which improves flow and leveling in paints and prevents surface defects such as “orange peel” or pinholing.
High Coupling Ability: Acts as an efficient intermediate to bridge oil-soluble and water-soluble components in complex chemical formulations.
Safety and Environmental Profile: Features low acute toxicity and high biodegradability; it is not classified as a hazardous air pollutant (HAP).
Hydrophobic Nature: Offers excellent water-resistance properties in dried coating films compared to more hydrophilic glycol ethers.
规格
技术亮点
Molecular Formula: C10H22O3
Molecular Weight: 190.28 g/mol
Boiling Point: 230°C (446°F) at 760 mmHg.
Flash Point: 100°C (212°F) (Setaflash Closed Cup), offering low flammability risk during industrial handling.
Evaporation Rate: 0.006 (Relative to n-Butyl Acetate = 1), categorized as a very slow evaporator.
Vapor Pressure: 0.04 mmHg at 20°C, contributing to low VOC emissions in various applications.
Solubility: Partially soluble in water (5.0 g/100g at 25°C); highly miscible with most organic solvents.
Specific Gravity: 0.911 at 25°C.
Surface Tension: 28.4 dynes/cm at 25°C, facilitating excellent substrate wetting.
