Propylene glycol n-butyl ether

Chemical Properties

Colorless, transparent liquid. Solubility in water at 20°C is 6.4% (by weight).

Uses

Propylene glycol n-butyl ether is used in coatings, inks, film-forming aids, etc.

Industrial uses

The longer C4 alkyl carbon chain in propylene glycol n-butyl ether (PnB) affords more organic solvency as compared to the shorter methyl side chain group found in dipropylene glycol methyl ether (DPM). The PnB solvent is a better choice for a coalescent solvent than the DPM since the DPM solvent is completely water soluble. Complete water solubility limits the all important organic solubility necessary for good latex film formation.