Skip to Content
Merck
CN

95682

p-Xylene

puriss. p.a., ≥99.0% (GC)

Synonym(s):

1,4-Dimethylbenzene

Sign In to View Organizational & Contract Pricing.

Select a Size


About This Item

Linear Formula:
C6H4(CH3)2
CAS Number:
Molecular Weight:
106.17
EC Number:
203-396-5
UNSPSC Code:
12352005
PubChem Substance ID:
Beilstein/REAXYS Number:
1901563
MDL number:
Assay:
≥99.0% (GC)
Technique(s):
GC/GC: suitable
Bp:
138 °C (lit.)
Vapor pressure:
9 mmHg ( 20 °C)
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

InChI key

URLKBWYHVLBVBO-UHFFFAOYSA-N

InChI

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

SMILES string

Cc1ccc(C)cc1

vapor density

3.7 (vs air)

vapor pressure

9 mmHg ( 20 °C)

grade

puriss. p.a.

assay

≥99.0% (GC)

form

liquid

autoignition temp.

984 °F

expl. lim.

7 %

technique(s)

GC/GC: suitable

impurities

≤0.5% o- and m-xylene (GC), ≤0.5% toluene (GC)

evapn. residue

≤0.002%

Quality Level

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.)

cation traces

Al: ≤0.5 mg/kg, Ba: ≤0.1 mg/kg, Bi: ≤0.1 mg/kg, Ca: ≤0.5 mg/kg, Cd: ≤0.05 mg/kg, Co: ≤0.02 mg/kg, Cr: ≤0.02 mg/kg, Cu: ≤0.02 mg/kg, Fe: ≤0.1 mg/kg, K: ≤0.5 mg/kg, Li: ≤0.1 mg/kg, Mg: ≤0.1 mg/kg, Mn: ≤0.02 mg/kg, Mo: ≤0.1 mg/kg, Na: ≤0.5 mg/kg, Ni: ≤0.02 mg/kg, Pb: ≤0.1 mg/kg, Sr: ≤0.1 mg/kg, Zn: ≤0.1 mg/kg

Looking for similar products? Visit Product Comparison Guide

General description

p-Xylene is an isomeric form of xylene. It undergoes Friedel-Crafts acylation reaction with various acids in the presence of zeolites (catalyst). It can be obtained from the mixtures of isomeric forms of xylene and ethylbenzene, isolated from the naptha fraction of petroleum. Also, it can be prepared from toluene by employing ZSM (Zeolite Socony Mobil)-5 catalysts. It is a raw material for the manufacture of PET (poly(ethylene terephthalate)) bottles. Sustainable synthesis of xylene from ethylene and dimethylfuran in the presence of zeolite catalysts has been reported.

Application

p-Xylene may be used in the synthesis of poly-p-xylene and terephthalic acid.

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

80.6 °F - closed cup

flash_point_c

27 °C - closed cup

Regulatory Information

危险化学品
This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
Metal-organic framework MIL-101 for high-resolution gas-chromatographic separation of xylene isomers and ethylbenzene.
Zhi-Yuan Gu et al.
Angewandte Chemie (International ed. in English), 49(8), 1477-1480 (2010-01-22)
Ultra-selective cycloaddition of dimethylfuran for renewable p-xylene with H-BEA.
Chang CC, et al.
Green Chemistry, 16(2), 585-588 (2014)
Francesc X Prenafeta-Boldú et al.
FEMS microbiology ecology, 80(3), 722-734 (2012-03-03)
The treatment of air contaminated with toluene, ethylbenzene, and p-xylene was assayed in three laboratory-scale biofilters, each consisting of two modules connected in series, packed with a pelletized organic fertilizer and inoculated with a toluene-degrading liquid enrichment culture. Biofilters were

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service