A fast-evaporating, hydrophobic glycol ether with high solvency and excellent coupling abilities. It is partly water soluble and miscible with most organic solvents. This is extensively used in heavy-duty cleaning formulations.
Synonym/Trade Name: Propylene glycol n-butyl ether
CAS No：5131-66-8
CHEMICAL FORMULA：C4H9OCH2CH(CH3)OH (Major isomer)
Typical Physical Properties
(These properties are typical but do not constitute specifications.)
Properties
Specifications
Molecular weight (g/mol)
132.2
Boiling point @ 760 mmHg, 1.01 bar
171°C
Flash point (Tag Closed Cup)
63°C
Specific gravity (25/25°C)
0.878
Density @ 20°C
0.879 g/cm³
Solubility
5.5
Evaporation rate (n-butyl acetate = 1.0)
0.093
coating
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