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T73601

Sigma-Aldrich

1,2,4-Trimethylbenzene

98%

Sinonimo/i:

Pseudocumene

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About This Item

Formula condensata:
C6H3(CH3)3
Numero CAS:
95-63-6
Peso molecolare:
120.19
Beilstein:
1903005
Numero CE:
202-436-9
Numero MDL:
MFCD00008527
Codice UNSPSC:
12352100
eCl@ss:
39011403
ID PubChem:
24900445
NACRES:
NA.22

Densità del vapore

4.1 (vs air)

Tensione di vapore

4.5 mmHg ( 37.7 °C)

Saggio

98%

Temp. autoaccensione

959 °F

Limite di esplosione

6.4 %

Indice di rifrazione

n20/D 1.504 (lit.)

P. eboll.

168 °C (lit.)

Punto di fusione

−44 °C (lit.)

Densità

0.876 g/mL at 20 °C (lit.)

Stringa SMILE

Cc1ccc(C)c(C)c1

InChI

1S/C9H12/c1-7-4-5-8(2)9(3)6-7/h4-6H,1-3H3
GWHJZXXIDMPWGX-UHFFFAOYSA-N

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Descrizione generale

1,2,4-Trimethylbenzene, also known as Pseudocumene is an alkylated aromatics that is commonly used in the synthesis of polycyclic aromatic hydrocarbons.

Applicazioni

1,2,4-Trimethylbenzene can be used as a reactant to synthesize:
  • 2,3,5-Trimethylbenzoquinone via oxidation reaction with phthaloyl peroxide under solvent-free conditions.      
  • 1,2,4,5-Tetramethylbenzene (durene) by methylation using syngas in the presence of Cu and Zn-based bifunctional catalysts.
  •  1,2,4-Oxadiazole derivatives via tandem reaction with nitroalkenes and nitriles in the presence of superacid CF3SO3H (TfOH).

Avvertenze

Danger

Indicazioni di pericolo

H226,H304,H315,H319,H332,H335,H411

Classi di pericolo

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

118.4 °F - closed cup

Punto d’infiammabilità (°C)

48.0 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificati d'analisi (COA)

Lot/Batch Number
MKCP8890
STBK1057
MKCN8544
WXBC9778V
WXBC9428V

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Synthesis of durene by methylation of 1, 2, 4-trimethylbenzene with syngas over bifunctional CuZnZrO x-HZSM-5 catalysts
Wen D, et al.
Catalysis Science & Technology (2022)
Bruno Bühler et al.
Biotechnology and bioengineering, 82(7), 833-842 (2003-04-18)
Oxygenases catalyze, among other interesting reactions, highly selective hydrocarbon oxyfunctionalizations, which are important in industrial organic synthesis but difficult to achieve by chemical means. Many enzymatic oxygenations have been described, but few of these have been scaled up to industrial
Z Zheng et al.
Applied microbiology and biotechnology, 57(4), 572-578 (2002-01-05)
Laboratory batch experiments were performed with contaminated aquifer sediments and four soluble aromatic components of jet fuel to assess their biodegradation under anaerobic conditions. The biodegradation of four aromatic compounds, toluene, o-xylene, 1,2,4-trimethylbenzene (TMB), and naphthalene, separately or together, was
F Solano-Serena et al.
Letters in applied microbiology, 30(1), 19-22 (2000-03-23)
A methodology was devised and was found useful for the selection of populations degrading recalcitrant hydrocarbons. The work was part of a programme aiming at developing knowledge of the intrinsic capacities of autochtonous microflorae of the environment for gasoline biodegradation.
S Gralewicz et al.
Neurotoxicology, 22(1), 79-89 (2001-04-20)
Trimethylbenzene (TMB), like xylene (dimethylbenzene), is a significant constituent of some industrial solvent mixtures. In earlier studies, we found that in the rat a subacute low-level inhalation exposure to some of the TMB isomers may result in behavioral alterations detectable
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