CAS No.10008-73-8,GAMMA-METHYLENE-GAMMA-BUTYROLACTONE Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	10008-73-8
Name:	GAMMA-METHYLENE-GAMMA-BUTYROLACTONE
Article Data:	77

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%.

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%.

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