PRODUCT 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) |
Description and 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).
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H302-H319 |
| Precautionary statements | P264-P270-P301+P312-P330-P501-P264-P280-P305+P351+P338-P337+P313P |
| Safety Statements | 24/25 |
| WGK Germany | 3 |
| RTECS | UQ0700000 |
| HS Code | 29322985 |
