Gamma-Butyrolactone

Gamma-butyrolactone is a butan-4-olide that is tetrahydrofuran substituted by an oxo group at position 2. It has a role as a neurotoxin and a metabolite.
4-butyrolactone is a clear colorless oily liquid with a pleasant odor.
PROPERTIES
Quality Level
200

vapor density
3 (vs air)

vapor pressure
1.5 mmHg ( 20 ®C)

product line
ReagentPlus¬

assay
≥99%

autoignition temp.
851 ®F

expl. lim.
16 %

refractive index
n20/D 1.436 (lit.)

bp
204-205 ®C (lit.)

mp
−45 ®C (lit.)

density
1.12 g/mL at 25 ®C (lit.)
γ-Butyrolactone is a hygroscopic colorless, water-miscible liquid with a weak characteristic odor. It is the simplest 4-carbon lactone. It is mainly used as an intermediate in the production of other chemicals, e.g. methyl-2-pyrrolidone.
Boiling point: 399.2®F (204®C)
Density: 1.13 g/cm±
Molar mass: 86.0891 g/mol
Melting point: -46.35®F (-43.53®C)
IUPAC ID: Dihydrofuran-2(3H)-one
Formula: C4H6O2
Acidity (pKa): 4.5
Application
For the introduction of 3-carboxypropyl side chain. Used as a component of electrolyte solutions in batteries and capacitors.