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247642

Sigma-Aldrich

Xylenes

ACS reagent, ≥98.5% xylenes + ethylbenzene basis

Synonym(s):

Xylene mixture of isomers

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About This Item

Linear Formula:
C6H4(CH3)2
CAS Number:
1330-20-7
Molecular Weight:
106.17
MDL number:
MFCD00077264
UNSPSC Code:
12352002
PubChem Substance ID:
329752747
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

vapor density

3.7 (vs air)

vapor pressure

18 mmHg ( 37.7 °C)

Assay

≥98.5% xylenes + ethylbenzene basis

form

liquid

composition

C6H5CH2CH3, ≤25%

expl. lim.

7 %

impurities

H2SO4, passes test
≤0.003% S compounds
≤0.05% water

evapn. residue

≤0.002%

color

APHA: ≤10

refractive index

n20/D 1.497 (lit.)

bp

137-140 °C (lit.)

mp

-34 °C

density

0.86 g/mL at 25 °C (lit.)

SMILES string

Cc1ccc(C)cc1.Cc2cccc(C)c2.Cc3ccccc3C

InChI

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

InChI key

MVZVDAGWAAZJPE-UHFFFAOYSA-N

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General description

Xylenes is a mixture of isomeric ortho-,meta- and para- forms of xylene which is an aromatic hydrocarbon widelyused as a solvent in various chemical reactions.

Application

Xylenes can be used as a solvent:
  • In the tetraphosphine/palladium-catalyzed Suzuki cross-coupling with sterically hindered aryl halides and arylboronic acids to synthesize tri-ortho-substituted biaryl adducts.
  • For the N-alkylation of amines or ammonia with alcohols to synthesize N-alkyl amines.
  • To synthesize aromatic polyimides by reacting unsymmetric phosphinated diamines and dianhydrides via solution polymerization.

Packaging

poly-coated bottles available: product numbers 247642-1L-CB, 247642-4L-CB and 247642-4X4L-CB

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 RE 2 - STOT RE 2 Inhalation - STOT SE 3

Target Organs

Central nervous system,Liver,Kidney, hearing organs, Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

77.0 °F - closed cup

Flash Point(C)

25 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 2 petroleums
Hazardous rank III
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

247642-6X500ML:4548173124285
247642-4L-CB:4548173252230
247642-18L-CS:
247642-500ML:4548173124278
247642-VAR:
247642-4L:
247642-18L:4548173124223
247642-1L-CB:4548173252216
247642-2.5L:4548173317861
247642-BULK:
247642-25ML:
247642-3L:4548173252223
247642-2L:4548173124254
247642-4X4L:4548173124261
247642-4X4L-CB:4548173252254
247642-20L:4548173124247
247642-1L:4548173124230

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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Magdalena Pasarica et al.
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Based on rodent studies, we examined the hypothesis that increased adipose tissue (AT) mass in obesity without an adequate support of vascularization might lead to hypoxia, macrophage infiltration, and inflammation. Oxygen partial pressure (AT pO2) and AT temperature in abdominal
A study of nonrigid aromatic molecules by supersonic molecular jet spectroscopy. I. Toluene and the xylenes.
Breen PJ, et al.
J. Chem. Phys. , 87(4), 1917-1926 (1987)
Transport and isomerization of xylenes over HZSM-5 zeolites.
Mirth G, et al.
J. Catal., 139(1), 24-33 (1993)
Qiming Wang et al.
Nature communications, 5, 4899-4899 (2014-09-17)
Cephalopods can display dazzling patterns of colours by selectively contracting muscles to reversibly activate chromatophores--pigment-containing cells under their skins. Inspired by this novel colouring strategy found in nature, we design an electro-mechano-chemically responsive elastomer system that can exhibit a wide
Ali Sarafraz-Yazdi et al.
Journal of chromatography. A, 1218(34), 5757-5764 (2011-07-26)
In this study, poly(ethylene glycol) (PEG) grafted onto multi-walled carbon nanotubes (PEG-g-MWCNTs) were synthesized by the covalent functionalization of MWCNTs with hydroxyl-terminated PEG chains. For the first time, functionalized product of PEG-g-MWCNTs was used as selective stationary phase to prepare
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