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    gamma-Butyrolactone (GBL)

    $500.00 – $10,000.00
    Properties
    Chemical formula
    		 C4H6O2
    Molar mass 86.090 g·mol−1
    Appearance Colorless liquid
    Density 1.1286 g/mL (15 °C), 1.1296 g/mL (20 °C)
    Melting point −43.53 °C (−46.35 °F; 229.62 K)
    Boiling point 204 °C (399 °F; 477 K)
    Solubility in water
    		 Miscible
    Solubility Soluble in CCl4, methanol, ethanol, acetone, benzene, ethyl ether
    log P −0.76
    Acidity (pKa) 4.5
    Refractive index (nD)
    		 1.435, 1.4341 (20 °C)
    Viscosity 1.7 cP (25 °C)
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