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Merck

8.08697

o-Xylene

for synthesis

Synonym(s):

1,2-Dimethylbenzene

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About This Item

Linear Formula:
C6H4(CH3)2
CAS Number:
95-47-6
Molecular Weight:
106.17
UNSPSC Code:
12352005
NACRES:
NA.22
EC Index Number:
202-422-2
MDL number:
MFCD00008519
Beilstein/REAXYS Number:
1815558
grade:
synthesis grade
assay:
≥98% (GC)
bp:
143-145 °C (lit.)
vapor pressure:
<0.1 atm ( 21.1 °C)
16 mmHg ( 37.7 °C)
7 mmHg ( 20 °C)

Product Name

o-Xylene, for synthesis

InChI key

CTQNGGLPUBDAKN-UHFFFAOYSA-N

SMILES string

Cc1ccccc1C

InChI

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

grade

synthesis grade

vapor density

3.7 (vs air)

vapor pressure

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

assay

≥98% (GC)

form

liquid

autoignition temp.

867 °F

expl. lim.

7 %

dilution

(for synthesis)

refractive index

n20/D 1.505 (lit.)

bp

143-145 °C (lit.)

mp

-26--23 °C (lit.)

transition temp

flash point 30 °C

density

0.879 g/mL at 20 °C (lit.)

storage temp.

2-30°C

Quality Level

200

Related Categories

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.878 - 0.881
Identity (IR): passes test

Application

O-Xylene is used:
  • As an additive of dope solutions in the preparation of PES (polyethersulfone) hollow fiber membranes.
  • To produce phthalic anhydride.

General description

O-Xyleneis an aromatic hydrocarbon composed of two methyl substituents attached to adjacent carbon atoms. It has extremely low solubility in water. It is used to produce plasticizers, dyes, and pigments. Petroleum cracking produces O-Xylenes, which are used to generate phthalic anhydride, a precursor to many products, drugs, and chemicals.

signalword

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

3 - Flammable liquids

wgk

WGK 2

flash_point_f

89.6 °F - closed cup

flash_point_c

32.0 °C - closed cup

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Fluorescence and photophysical properties of xylene isomers in water: with experimental and theoretical approaches
Muhammad Farooq Saleem K, et al.
Royal Society open science, 5(2), 171719-171719 (2018)
Preparation and properties of polyethersulfone hollow fiber membranes with o-xylene as an additive used in membrane contactors for CO2 absorption
Ghasem N, et al.
Separation and Purification Technology, 92, 1-10 (2012)
Pyrolysis of waste tyres with zeolite USY and ZSM-5 catalysts
Boxiong S, et al.
Applied Catalysis. B, Environmental, 73(1-2), 150-157 (2007)
Mariana A Moreira et al.
Langmuir : the ACS journal of surfaces and colloids, 28(13), 5715-5723 (2012-03-13)
Powder, agglomerates, and tablets of the microporous zirconium(IV) terephthalate metal-organic framework UiO-66 were evaluated for the selective adsorption and separation of xylene isomers in the liquid phase using n-heptane as the eluent. Pulse experiments, performed at 313 K in the

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