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1.09798

Supelco

o-Xylene

reference substance for gas chromatography

Synonym(s):

1,2-Dimethylbenzene

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About This Item

Linear Formula:
C6H4(CH3)2
CAS Number:
Molecular Weight:
106.17
Beilstein:
1815558
MDL number:
UNSPSC Code:
12352005
EC Index Number:
202-422-2

vapor density

3.7 (vs air)

Quality Level

vapor pressure

<0.1 atm ( 21.1 °C)
16 mmHg ( 37.7 °C)
7 mmHg ( 20 °C)

Assay

≥99% (GC)

form

liquid

autoignition temp.

867 °F

expl. lim.

7 %

technique(s)

gas chromatography (GC): suitable

refractive index

n20/D 1.505 (lit.)

bp

143-145 °C (lit.)

mp

-26--23 °C (lit.)

transition temp

flash point 30 °C

solubility

0.18 g/L

density

0.879 g/mL at 20 °C (lit.)

storage temp.

2-30°C

SMILES string

Cc1ccccc1C

InChI

1S/C8H10/c1-7-5-3-4-6-8(7)2/h3-6H,1-2H3

InChI key

CTQNGGLPUBDAKN-UHFFFAOYSA-N

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Application


  • o-Xylene for spectroscopy and chromatography: The use of o-Xylene in the field analysis of gas-phase VOCs highlights its application as an effective solvent in compound-specific isotope analysis, underlining its importance in environmental monitoring and pharmaceutical research (J Contam Hydrol, 2024; doi: 10.1016/j.jconhyd.2024.104310).

  • o-Xylene in molecular biology research applications: Research utilizes o-Xylene in molecular dynamics simulations to understand the adsorption and diffusion behaviors of aromatic compounds, providing insights crucial for the development of advanced materials and pharmaceutical applications (Langmuir, 2024; doi: 10.1021/acs.langmuir.3c03706).

Analysis Note

Assay (GC): ≥ 99.0 %
Identity (IR-spectrum): conforms

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - 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(F)

89.6 °F - closed cup

Flash Point(C)

32.0 °C - closed cup

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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