All Photos(3)

296333

Sigma-Aldrich

p-Xylene

anhydrous, ≥99%

Synonym(s):
1,4-Dimethylbenzene
Linear Formula:
C6H4(CH3)2
CAS Number:
Molecular Weight:
106.17
Beilstein:
1901563
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

anhydrous

vapor density

3.7 (vs air)

vapor pressure

9 mmHg ( 20 °C)

assay

≥99%

form

liquid

autoignition temp.

984 °F

expl. lim.

7 %

impurities

<0.002% water
<0.005% water (100 mL pkg)

evapn. residue

<0.0003%

refractive index

n20/D 1.495 (lit.)

bp

138 °C (lit.)

mp

12-13 °C (lit.)

solubility

water: soluble 0.2 g/L

density

0.861 g/mL at 20 °C (lit.)

SMILES string

Cc1ccc(C)cc1

InChI

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

InChI key

URLKBWYHVLBVBO-UHFFFAOYSA-N

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General description

p-Xylene is an isomer xylene mainly used in the polyester industry as a raw material for synthesizing 5,6-terephthalic acid.

Application

p-Xylene may be used in the synthesis of ethyl 2,5-dimethylphenylhydroxymalonate by reacting with ethyl oxomalonate in the presence of anhydrous stannic chloride.

Packaging

1, 2 L in Sure/Seal™
100 mL in Sure/Seal™

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Asp. Tox. 1 - 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)

80.6 °F - closed cup

Flash Point(C)

27 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

2,5-dimethylmandelic acid
Riebsomer JL and Irvine J
Organic Syntheses, 25, 33-33 (1945)
Joshua B Marlow et al.
Physical chemistry chemical physics : PCCP, 20(24), 16592-16603 (2018-06-07)
Lamellar liquid crystals comprising oil, water and surfactant(s) were formulated and analysed in order to examine how these materials responded to the inclusion of inorganic nanoparticles, in terms of their structural and rheological characteristics. Lamellar phases were formed from mixtures
Ultra-selective cycloaddition of dimethylfuran for renewable p-xylene with H-BEA.
Chang CC, et al.
Green Chemistry, 16(2), 585-588 (2014)
Cycloaddition of biomass-derived furans for catalytic production of renewable p-xylene.
Williams CL, et al.
ACS Catalysis, 2(6), 935-939 (2012)
Friedel-Crafts acylation of toluene and p-xylene with carboxylic acids catalyzed by zeolites.
Chiche B, et al.
The Journal of Organic Chemistry, 51(11), 2128-2130 (1986)

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