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α-methylene γ-butyrolactone

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Origin: China

Cas No: 547-65-9

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

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CAS No.: 547-65-9 Formula: C5H6O2 Molecular Weight: 98.09990

Basic Info

Chemical Name	α-methylene γ-butyrolactone
Synonyms	alpha-methylene gamma-butyrolactone; 3-methylideneoxolan-2-one; 2(3H)-Furanone, dihydro-3-methylene-; 3-Methylenedihydro-2(3H)-furanone;
CAS No.	547-65-9
Molecular Formula	C5H6O2
Molecular Weight	98.09990
PSA	26.30000
LogP	0.48950

Properties

Appearance & Physical State	clear colourless to light yellow or slightly pink
Density	1.119 g/mL at 25 °C(lit.)
Boiling Point	86-88 °C12 mm Hg(lit.)
Flash Point	99 °F
Refractive Index	n20/D 1.472(lit.)
Storage Condition	2-8°C

Safety Info

Hazard Class	3.2
Safety Statements	S23; S36/37
HS Code	2932209090
WGK Germany	3
Packing Group	III
RIDADR	1993
Risk Statements	R42/43
Hazard Codes	Xn

Synthesis Route

ethene+acrylic acid→α-methylene γ-butyrolactone+VINYL ACRYLATE
α-Bromo-γ-butyrolactone+ESCHENMOSER'S SALT→γ-Butyrolactone+α-methylene γ-butyrolactone
Tetrahydro-3-furoic acid→γ-Butyrolactone+α-methylene γ-butyrolactone

Precursor

2-Chloro-4,6-dimethoxy-1,3,5-triazine
methyl 4-hydroxy-2-methylidenebutanoate
but-3-yn-1-ol
3-[(dimethylamino)methyl]oxolan-2-one

Downstream Product

4-methyl-2H-furan-5-one
(Z)-3-(4-methoxybenzylidene)dihydrofuran-2(3H)-one
methyl 3-(2-oxooxolan-3-yl)propanoate
ethyl (E)-2-methylbut-2-enoate

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