| Identification | More | [Name]
TETRAMETHYL-1,3-CYCLOBUTANEDIONE | [CAS]
933-52-8 | [Synonyms]
2,2,4,4-TETRAMETHYL-1,3-CYCLOBUTANEDIONE
DIMETHYL KETENE DIMER
RARECHEM AQ C4 0041
TETRAMETHYL-1,3-CYCLOBUTANEDIONE
TETRAMETHYLCYCLOBUTANE-1,3-DIONE
TIMTEC-BB SBB008408
1,1,3,3-Tetramethylcyclobutanedione
2,2,4,4-Tetramethyl cyclobutane-1,3-dione
2,2,4,4-tetramethyl-3-cyclobutanedione
2,2,4,4-Tetramethylcyclobutanedione
Tetramethylcyclobuta-1,3-dione
Tetramethyl-1,3-cyclobutanedione, GC 99%
1,3-Cyclobutanedione, 2,2,4,4-tetramethyl-
Tetramethyl-1,3-cyclobutanedione [Precursor to Dimethyl Ketene]
Dimethylkene dimer | [EINECS(EC#)]
213-269-6 | [Molecular Formula]
C8H12O2 | [MDL Number]
MFCD00001331 | [Molecular Weight]
140.18 | [MOL File]
933-52-8.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [Melting point ]
114-116 °C(lit.)
| [Boiling point ]
95-159 °C750 mm Hg(lit.)
| [density ]
1.0373 (rough estimate) | [refractive index ]
1.4580 (estimate) | [Fp ]
120-122°C/150mm | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
It is soluble in chloroform. | [form ]
powder to crystal | [color ]
White to Almost white | [InChI]
InChI=1S/C8H12O2/c1-7(2)5(9)8(3,4)6(7)10/h1-4H3 | [InChIKey]
RGCDVHNITQEYPO-UHFFFAOYSA-N | [SMILES]
C1(=O)C(C)(C)C(=O)C1(C)C | [CAS DataBase Reference]
933-52-8(CAS DataBase Reference) | [EPA Substance Registry System]
1,3-Cyclobutanedione, 2,2,4,4-tetramethyl- (933-52-8) |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS07 | [Signal word ]
Warning | [Hazard statements ]
H302-H315-H319-H335 | [Precautionary statements ]
P261-P301+P312-P302+P352-P304+P340-P305+P351+P338 | [Safety Statements ]
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
3
| [RTECS ]
GU1775000
| [TSCA ]
Yes | [HS Code ]
2914290090 | [Hazardous Substances Data]
933-52-8(Hazardous Substances Data) |
| Hazard Information | Back Directory | [Chemical Properties]
white crystalline powder | [Uses]
Tetramethyl-1,3-cyclobutanedione is used as a chemical for life science research. It is also used to make other chemical, as well as an chemical and organic intermediate. | [Synthesis Reference(s)]
Canadian Journal of Chemistry, 50, p. 3923, 1972 DOI: 10.1139/v72-619 | [Purification Methods]
Crystallise the dione from *C6H6 and dry it in vacuo over P2O5 in an Abderhalden pistol. [Beilstein 7 III 3234, 7 IV 2004.] |
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