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o-Xylene

Name: <I>o</I>-Xylene
Brand: MM

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

Assay:

≥98% (GC)

Grade:

synthesis grade

Bp:

143-145 °C (lit.)

Vapor pressure:

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

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Properties

grade

synthesis grade

Quality Segment

200

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

SMILES string

Cc1ccccc1C

InChI

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

InChI key

CTQNGGLPUBDAKN-UHFFFAOYSA-N

Description

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.

Application

O-Xylene is used:

As an additive of dope solutions in the preparation of PES (polyethersulfone) hollow fiber membranes.
To produce phthalic anhydride.[1]

Analysis Note

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

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This Item	95660	95662	294780
Sigma-Aldrich 8.08697 o-Xylene	Supelco 95660 o-Xylene	Sigma-Aldrich 95662 o-Xylene	Sigma-Aldrich 294780 o-Xylene
description for synthesis	description analytical standard	description puriss. p.a., ≥99.0% (GC)	description anhydrous, 97%
assay ≥98% (GC)	assay ≥99.0% (GC)	assay ≥99.0% (GC)	assay 97%
Quality Level 200	Quality Level 100	Quality Level 200	Quality Level 100
grade synthesis grade	grade analytical standard	grade -	grade anhydrous
form liquid	form -	form liquid	form liquid
expl. lim. 7 %	expl. lim. 7 %	expl. lim. 7 %	expl. lim. 7 %
refractive index n20/D 1.505 (lit.)	refractive index n20/D 1.505	refractive index n20/D 1.505	refractive index n20/D 1.505 (lit.)

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signalword

Danger

pcodes

P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P331

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

pictograms

GHS02,GHS08,GHS07

hcodes

H226,H304,H312 + H332,H315,H319,H335,H412

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