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82542

1,2,4-Trimethylbenzene

purum, ≥97.0% (GC)

Synonym(s):

Pseudocumene

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About This Item

Linear Formula:
C6H3(CH3)3
CAS Number:
95-63-6
Molecular Weight:
120.19
EC Number:
202-436-9
UNSPSC Code:
12352100
MDL number:
MFCD00008527
Beilstein/REAXYS Number:
1903005
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vapor density

4.1 (vs air)

vapor pressure

4.5 mmHg ( 37.7 °C)

grade

purum

assay

≥97.0% (GC)

autoignition temp.

959 °F

expl. lim.

6.4 %

refractive index

n20/D 1.504 (lit.), n20/D 1.505

bp

166-169 °C, 168 °C (lit.)

mp

−44 °C (lit.)

density

0.876 g/mL at 20 °C (lit.)

SMILES string

Cc1ccc(C)c(C)c1

InChI

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

InChI key

GWHJZXXIDMPWGX-UHFFFAOYSA-N

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signalword

Danger

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk

WGK 2

flash_point_f

118.4 °F - closed cup

flash_point_c

48.0 °C - closed cup

ppe

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

Regulatory Information

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Bruno Bühler et al.
Biotechnology and bioengineering, 81(6), 683-694 (2003-01-17)
The two-liquid phase concept was used to develop a whole cell biocatalytic system for the efficient multistep oxidation of pseudocumene to 3,4-dimethylbenzaldehyde. Recombinant Escherichia coli cells were employed to express the Pseudomonas putida genes encoding xylene monooxygenase, which catalyzes the
G Korinth et al.
International archives of occupational and environmental health, 76(5), 382-386 (2003-05-10)
The aim of the experiments was to evaluate the efficacy of skin barrier creams (SBCs) and protective gloves and its potential for reduction of percutaneous absorption of industrial solvents. We assessed percutaneous absorption of ethylene glycol (EG), isopropyl alcohol (IA)
Birger Bohn et al.
Physical chemistry chemical physics : PCCP, 14(40), 13933-13948 (2012-09-13)
The reversible gas-phase addition of OH radicals to the trimethylbenzenes was investigated in pulsed experiments utilizing VUV flash-photolysis resonance-fluorescence of H(2)O in the temperature range of 275-340 K. Triexponential OH decays were observed in the presence of the trimethylbenzenes, indicating
Hans H Richnow et al.
Journal of contaminant hydrology, 64(1-2), 59-72 (2003-05-15)
Concentrations and isotopic compositions (13C/12C) of aromatic hydrocarbons were determined in eight samples obtained from the strongly anoxic part of the leachate plume downgradient from the Vejen Landfill (Denmark), where methanogenic, sulfate-reducing and iron-reducing conditions were observed. Despite the heterogeneous
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
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