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8.08697

o-Xylene

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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grade

synthesis grade

Quality Level

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

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.

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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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

89.6 °F - closed cup

flash_point_c

32.0 °C - closed cup

Regulatory Information

危险化学品

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Global Trade Item Number

SKUGTIN
808697005004027269250621
808697100004022536401669
808697250004022536401683
808697601004022536401690