| Identification | More | [Name]
1,2,4,5-TETRAMETHYLBENZENE | [CAS]
488-23-3 | [Synonyms]
1,2,3,4-TETRAMETHYLBENZENE
1,2,4,5-TETRAMETHYLBENZENE
DURENE
DUROL
LABOTEST-BB LT00852111
PREHNITENE
PREHNITOL
1,2,3,4-tetramethyl-benzen
Prehenitene
1,2,3,4-Tetramethylbenzene,tech.90%
Benzene, 1,2,3,4-tetramethyl-
TETRAMETHYLBENZENEISOMERS
PRENITENE
1,2,3,4-TETRAMETHYLBENZENE: TECH., 90% | [EINECS(EC#)]
202-465-7 | [Molecular Formula]
C10H14 | [MDL Number]
MFCD00008528 | [Molecular Weight]
134.22 | [MOL File]
488-23-3.mol |
| Chemical Properties | Back Directory | [Appearance]
Colorless liquid. Soluble in alcohol; insoluble in water.
| [Melting point ]
76-80 °C(lit.)
| [Boiling point ]
203°C | [density ]
0.838 g/mL at 25 °C(lit.)
| [vapor density ]
4.6 (vs air)
| [vapor pressure ]
160 mm Hg ( 140 °C)
| [refractive index ]
1.5190 | [Fp ]
165 °F
| [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
Chloroform (Slightly), Ethyl Acetate (Slightly) | [form ]
Oil | [color ]
Colourless | [Odor Threshold]
0.011ppm | [Water Solubility ]
Immiscible with water. | [BRN ]
1904390 | [Dielectric constant]
2.5899999999999999 | [LogP]
4.000 | [CAS DataBase Reference]
488-23-3(CAS DataBase Reference) | [NIST Chemistry Reference]
Benzene, 1,2,3,4-tetramethyl-(488-23-3) | [EPA Substance Registry System]
488-23-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
F | [Risk Statements ]
R11:Highly Flammable. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S37:Wear suitable gloves . | [RIDADR ]
UN 1325 4.1/PG 2
| [WGK Germany ]
1
| [RTECS ]
DC0500000
| [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
Ⅱ |
| Questions And Answer | Back Directory | [Description]
1, 2, 3, 4-Tetramethylbenzene is used as a starting material in the preparation of 1, 2, 3, 4-tetramethyl benzene-5-chlorosulfonyl chloride by reacting with chlorosulfonic acid1. In industry, it is the precursor to pyromellitic dianhydride, which is used for manufacturing curing agents, adhesives, coating materials. It is used in the manufacture of some raw materials for engineering plastics (polyimides) and cross-linking agent for alkyd resins. It is also a suitable starting material for the synthesis of hexamethylbenzene2-4.
| [Reference]
- https://www.alfa.com/en/catalog/L19756/
- Hoefs, Marcel J. L., et al. "Alternative biological sources for 1,2,3,4-tetramethylbenzene in flash pyrolysates of kerogen." Organic Geochemistry 23.10(1995): 975-979.
- Sun, Yongge, et al. "Source facies of the Paleozoic petroleum systems in the Tabei uplift, Tarim Basin, NW China: implications from aryl isoprenoids in crude oils." Organic Geochemistry 34.4(2003): 629-634.
- Jia, Wanglu, et al. "Source of 1,2,3,4-tetramethylbenzene in asphaltenes from the Tarim Basin." Journal of Asian Earth Sciences 30.5(2007):591-598.
|
| Hazard Information | Back Directory | [Chemical Properties]
Colorless liquid. Soluble in alcohol; insoluble in water.
| [Uses]
1,2,3,4-Tetramethylbenzene is a useful starting material and building block for organic synthesis. An analyte identified in the volatile oils from Taxodium ascendens leaves and cones. Antibacterial activity. | [Definition]
ChEBI: A tetramethylbenzene that consists of benzene substituted by methyl groups at positions 1, 2, 3 and 4. | [Purification Methods]
Dry it over sodium and distil under reduced pressure. The picrate has m 92-95o (EtOH). [Beilstein 5 H 430, 5 I 206. 5 II 329, 5 III 974, 5 IV 1072.] |
| Spectrum Detail | Back Directory | [Spectrum Detail]
1,2,3,4-Tetramethylbenzene(488-23-3)MS
1,2,3,4-Tetramethylbenzene(488-23-3)1HNMR
1,2,3,4-Tetramethylbenzene(488-23-3)13CNMR
1,2,3,4-Tetramethylbenzene(488-23-3)IR1
1,2,3,4-Tetramethylbenzene(488-23-3)Raman
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