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Diethylene glycol monobutyl ether, also known as Butyl diglycol, MF: C₈H₁₈O₃ MW: 162.227. It is an ether compound formed by the reaction of diethylene glycol with n-butanol, a low-toxicity, high-boiling-point polar organic solvent exhibiting both lipophilic and hydrophilic properties. It is miscible with water and suitable for both water-based and solvent-based systems.
| Item | Specification |
| Melting point | -68°C (lit.) |
| Boiling point | 231°C (lit.) |
| Density | 0.967 g/mL at 25°C (lit.) |
| Vapor Density | 5.6 (vs air) |
| Vapor Pressure | 30 mmHg (130°C) |
| Refractive Index | n₂₀/D 1.432 |
| Flash Point | 212°F |
| Solubility | Miscible with water in all proportions; soluble in ethanol, diethyl ether, oils, and most organic solvents. |
As a solvent or diluent in alkyd paints, polyurethane coatings, water-based coatings, etc., to improve flow properties and solubility.
Diethylene glycol monobutyl ether is used as a reaction medium, extractant, or in synthetic intermediates and pharmaceutical purification processes.
Butyl diglycol is used for cleaning circuit boards and semiconductor components, or as a solvent for photoresists.
Used as a dye solvent and penetrant to facilitate uniform dye adhesion to fiber or leather surfaces.
Also used in printing inks, metal cleaning agents, cosmetic solvents, etc.
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