Basic information Safety Supplier Related

4,6-Dimethyl-2-pyrone

Basic information Safety Supplier Related

4,6-Dimethyl-2-pyrone Basic information

Product Name:
4,6-Dimethyl-2-pyrone
Synonyms:
  • 2,4-Dimethyl-alpha-pyrone
  • 4,6-dimethyl-2h-pyran-2-on
  • 4,6-Dimethylcoumalin
  • Mesitene lactone
  • Sorbic acid, 5-hydroxy-3-methyl-, delta-lactone
  • 4,6-DIMETHYL-PYRAN-2-ONE
  • 4,6-DIMETHYL-ALPHA-PYRONE
  • 4,6-DIMETHYL-2-PYRONE
CAS:
675-09-2
MF:
C7H8O2
MW:
124.14
EINECS:
211-618-7
Product Categories:
  • Miscellaneous
Mol File:
675-09-2.mol
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4,6-Dimethyl-2-pyrone Chemical Properties

Melting point:
48-50 °C (lit.)
Boiling point:
170.92°C (rough estimate)
Density 
1.0538 (rough estimate)
refractive index 
1.3810 (estimate)
Flash point:
>230 °F
form 
Crystalline Low Melting Mass
color 
Yellow
Odor
at 10.00 % in dipropylene glycol. sweet caramel sugar green licorice balsam gourmand
Odor Type
caramellic
Water Solubility 
242.4g/L(59.7 ºC)
LogP
0.185 (est)
CAS DataBase Reference
675-09-2(CAS DataBase Reference)
NIST Chemistry Reference
2H-Pyran-2-one, 4,6-dimethyl-(675-09-2)
EPA Substance Registry System
2H-Pyran-2-one, 4,6-dimethyl- (675-09-2)
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Safety Information

Safety Statements 
24/25
WGK Germany 
3
RTECS 
UQ0700000
HS Code 
29322985

MSDS

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4,6-Dimethyl-2-pyrone Usage And Synthesis

Chemical Properties

white to light yellow crystal powder

Uses

4,6-Dimethyl-α-pyrone (Me21) has been used in the preparation of G4C{Me21} via reacting with tetra-p-sulfocalix[4]arene (C) and guanidine hydrochloride (GCl). It may be used in the preparation of host-guest complex G4C{Me21} by reacting with crystalline guanidinium-sulfonate-calixarene (G4C). This complex on UV irradiation afforded 1,3-dimethylcyclobutadiene (Me2CBD).

General Description

4,6-Dimethyl-α-pyrone was immobilized in a guanidinium-sulfonate-calixarene (G4C) crystalline network, which upon exposure to ultraviolet irradiation, transforms the entrapped 4,6-dimethyl-α-pyrone into a 4,6-dimethyl-β-lactone. Thin solid films layers of 4,6-dimethyl-α-pyrone on UV irradiation at -190°C were investigated.

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