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134449 Sigma-Aldrich

p-Xylene

ReagentPlus®, 99%

Synonym: 1,4-Dimethylbenzene

  • CAS Number 106-42-3

  • Linear Formula C6H4(CH3)2

  • Molecular Weight 106.17

  •  Beilstein/REAXYS Number 1901563

  •  EC Number 203-396-5

  •  MDL number MFCD00008556

  •  PubChem Substance ID 329750177

  •  NACRES NA.21

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Properties

Related Categories ReagentPlus, ReagentPlus Solvent Grade Products, ACS and Reagent Grade Solvents, Amber Glass Bottles, Carbon Steel Cans with NPT Threads,
Quality Level   100
vapor density   3.7 (vs air)
vapor pressure   9 mmHg ( 20 °C)
product line   ReagentPlus®
assay   99%
form   liquid
autoignition temp.   984 °F
expl. lim.   7 %
application(s)   GC/MS: suitable
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

Description

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. Its sustainable synthesis 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.
p-xylene mayumb be used in the single drop microextraction of the corresponding organochlorine pesticides in vegetables, separated via gas chromatography(GC)coupled with mass spectrometry(MS).

Packaging

1, 4 L in glass bottle

18 L in steel drum

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Target organs 
Respiratory system
RIDADR 
UN1307 - class 3 - PG 3 - Xylenes
WGK Germany 
WGK 2
RTECS 
ZE2625000
Flash Point(F) 
80.6 °F - closed cup
Flash Point(C) 
27 °C - closed cup

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

Peer-Reviewed Papers
15

References

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