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Product Name: |
Gamma valerolactone |
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CAS: |
108-29-2 |
|
MF: |
C5H8O2 |
|
MW: |
100.12 |
|
EINECS: |
203-569-5 |
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Mol File: |
108-29-2.mol |
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|
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Melting point |
−31 °C(lit.) |
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Boiling point |
207-208 °C(lit.) |
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density |
1.05 g/mL at 25 °C(lit.) |
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vapor density |
3.45 (vs air) |
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refractive index |
n20/D 1.432(lit.) |
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FEMA |
3103 | GAMMA-VALEROLACTONE |
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Fp |
204.8 °F |
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storage temp. |
Store below +30°C. |
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form |
Liquid |
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color |
Clear colorless |
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PH |
7 (H2O, 20℃) |
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Water Solubility |
MISCIBLE |
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JECFA Number |
220 |
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BRN |
80420 |
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InChIKey |
GAEKPEKOJKCEMS-UHFFFAOYSA-N |
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CAS DataBase Reference |
108-29-2(CAS DataBase Reference) |
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NIST Chemistry Reference |
2(3H)-Furanone, dihydro-5-methyl-(108-29-2) |
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EPA Substance Registry System |
2(3H)-Furanone, dihydro-5-methyl- (108-29-2) |
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Hazard Codes |
Xi |
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Risk Statements |
36-36/37/38 |
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Safety Statements |
39-26-37/39 |
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WGK Germany |
2 |
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RTECS |
LU3580000 |
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TSCA |
Yes |
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HS Code |
29322980 |
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Chemical Properties |
Colorless liquid. Surface tension 30 dynes/cm (25C), viscosity 2.18 cP (25C), pH (anhydrous): 7. pH (10% solution in distilled water): 4.2. Miscible with water and most organic solvents, resins, waxes, etc.; slightly misciblewith zein, beeswax, petrolatum; immiscible with anhydrous glycerin, glue, casein, arabic gum, and soybean protein. Combustible. |
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Chemical Properties |
γ-Valerolactone has a sweet, herbaceous odor. |
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Uses |
Dye baths (coupling agent), brake fluids, cutting oils, and as solvent for adhesives, insecticides, and lacquers. |
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Preparation |
By reduction of levulinic acid followed by cyclization. |
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Safety Profile |
Moderately toxic by ingestion. A skin irritant. Mutation data reported. Combustible liquid when exposed to heat or flame; can react with oxidizing materials. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. |
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Purification Methods |
Purify the -lactone by repeated fractional distillation [Boorman & Linstead J Chem Soc 577, 580 1933]. IR: max 1790 (CS2), 1775 (CHCl3) cm-1 [Jones et al. Can J Chem 3 7 2007 1959]. The BF3-complex distils at 110-111o/20mm [Reppe et al. Justus Liebigs Ann Chem 596 179 1955]. It is characterized by conversion to -hydroxy-n-valeramide on treatment with NH3, m 51.5-52o (by slow evaporation of a CHCl3 solution). [Beilstein 17 H 235, 17 I 131, 17 II 288, 17 III/IV 4176, 17/9 V 24.] |
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Raw materials |
Acetoxyacetic acid-->Levulinic acid |
