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| CAS No.: | 10008-73-8 |
|---|---|
| Name: | GAMMA-METHYLENE-GAMMA-BUTYROLACTONE |
| Molecular Structure: | |
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| Formula: | C5H6O2 |
| Molecular Weight: | 98.1014 |
| Synonyms: | 4-Pentenoicacid, 4-hydroxy-, g-lactone (7CI,8CI);4,5-Dihydro-5-methylenefuran-2(3H)-one;4-Penten-4-olide;5-Methylenetetrahydro-2-furanone;Dihydro-5-methylenefuran-2(3H)-one;g-Methylene-g-butyrolactone; |
| EINECS: | 233-004-8 |
| Density: | 1.07 g/cm3 |
| Melting Point: | 18 °C |
| Boiling Point: | 186.7 °C at 760 mmHg |
| Flash Point: | 76.7 °C |
| Appearance: | clear colourless to light yellow liquid |
| Hazard Symbols: |
 Xn
|
| Risk Codes: | 42/43 |
| Safety: | 23-36/37 |
| PSA: | 26.30000 |
| LogP: | 0.83710 |
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Specification
The 2(3H)-Furanone,dihydro-5-methylene- is an organic compound with the formula C5H6O2. The IUPAC name of this chemical is 5-methylideneoxolan-2-one. With the CAS registry number 10008-73-8, it is also named as dihydro-5-methylenefuran-2(3H)-one.
Physical properties about 2(3H)-Furanone,dihydro-5-methylene- are: (1)ACD/LogP: 0.79; (2)ACD/LogD (pH 5.5): 0.79; (3)ACD/LogD (pH 7.4): 0.79; (4)ACD/BCF (pH 5.5): 2.33; (5)ACD/BCF (pH 7.4): 2.33; (6)ACD/KOC (pH 5.5): 63.69; (7)ACD/KOC (pH 7.4): 63.69; (8)#H bond acceptors: 2; (9)Polar Surface Area: 26.3 Å2; (10)Index of Refraction: 1.452; (11)Molar Refractivity: 24.54 cm3; (12)Molar Volume: 90.9 cm3; (13)Polarizability: 9.73×10-24cm3; (14)Surface Tension: 29.2 dyne/cm; (15)Density: 1.07 g/cm3; (16)Flash Point: 76.7 °C; (17)Enthalpy of Vaporization: 42.29 kJ/mol; (18)Boiling Point: 186.7 °C at 760 mmHg; (19)Vapour Pressure: 0.654 mmHg at 25°C.
Preparation: this chemical can be prepared by 5-iodomethyl-dihydro-furan-2-one. This reaction will need reagent DBU and solvent benzene. The reaction time is 3 hours with reaction temperature of 70 - 80 °C. The yield is about 79%.
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Uses of 2(3H)-Furanone,dihydro-5-methylene-: it can be used to produce 5-methyl-3H-furan-2-one at temperature of 40 °C. It will need reagent Lewalit S 100 G1 and solvent CCl4 with reaction time of 4 hours. The yield is about 87%.
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When you are using this chemical, please be cautious about it as the following:
This chemical may cause sensitisation by inhalation and skin contact. When you are using it, wear suitable protective clothing and gloves and do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer).
You can still convert the following datas into molecular structure:
(1)SMILES: O=C1O/C(=C)CC1
(2)InChI: InChI=1/C5H6O2/c1-4-2-3-5(6)7-4/h1-3H2
(3)InChIKey: SIFBVNDLLGPEKT-UHFFFAOYAS
(4)Std. InChI: InChI=1S/C5H6O2/c1-4-2-3-5(6)7-4/h1-3H2
(5)Std. InChIKey: SIFBVNDLLGPEKT-UHFFFAOYSA-N