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45996

Supelco

1,2,4-Trimethylbenzene

analytical standard

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Synonym(s):
Pseudocumene
Linear Formula:
C6H3(CH3)3
CAS Number:
95-63-6
Molecular Weight:
120.19
Beilstein:
1903005
EC Number:
202-436-9
MDL number:
MFCD00008527
eCl@ss:
39011403
PubChem Substance ID:
329757044
NACRES:
NA.24

grade

analytical standard

Quality Level

100

vapor density

4.1 (vs air)

vapor pressure

4.5 mmHg ( 37.7 °C)

autoignition temp.

959 °F

shelf life

limited shelf life, expiry date on the label

expl. lim.

6.4 %

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

refractive index

n20/D 1.504 (lit.)

bp

168 °C (lit.)

mp

−44 °C (lit.)

density

0.876 g/mL at 20 °C (lit.)

application(s)

environmental

format

neat

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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Application

1,2,4-Trimethylbenzene may be used as an analytical reference standard for the quantification of the analyte in environmental samples using gas chromatography coupled to mass spectrometry (GC-MS).
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

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Signal Word

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 Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(C)

48.0 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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Fei Li et al.
Indian journal of dermatology, 65(2), 92-96 (2020-03-18)
Common indoor pollutants, as fine particulate matter (PM2.5), can damage people's health and cause skin allergies. However, it remains unknown which common pollutants can lead to allergy, such as, in children atopic dermatitis, and what is the key molecule. This
Solid-phase microextraction (SPME) for rapid field sampling and analysis by gas chromatography-mass spectrometry (GC-MS)
Hook.LG, et al.
TrAC, Trends in Analytical Chemistry, 21(8), 534-543 (2002)
Richard H McKee et al.
International journal of toxicology, 29(3), 277-290 (2010-05-08)
This article reports the results of neurobehavioral tests on representative aromatic constituents, specifically C(9) to C(11) species. The testing evaluated effects in several domains including clinical effects, motor activity, functional observations, and visual discrimination performance. Exposures ranging from 600 to
Z Korsak et al.
International journal of occupational medicine and environmental health, 13(2), 155-164 (2000-09-01)
Toxic effects of exposure of 1,2,4-trimethylbenzene (pseudocumene) in the condition of sub-chronic inhalation experiment were examined. Rats were exposed to vapours of pseudocumene at concentrations of 123 mg/m3, 492 mg/m3 and 1230 mg/m3, 6 h/day, 5 days/week for 3 months.
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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