M-Xylene

m-Xylene
Other names	m-Xylol 1,3-Dimethylbenzene
Identifiers
CAS number	108-38-3 Y
RTECS number	ZE2275000
SMILES	CC1=CC(C)=CC=C1
Properties
Molecular formula	C8H10
Molar mass	106.16 g/mol
Appearance	Colorless liquid
Density	0.86 g/mL
Melting point	-48 °C, 225 K, -54 °F
Boiling point	139 °C, 412 K, 282 °F
Solubility in water	insoluble
Solubility in ethanol	very soluble
Solubility in diethyl ether	very soluble
Refractive index (nD)	1.49722
Viscosity	0.8059 cP at 0 °C 0.6200 cP at 20 °C
Hazards
MSDS	External MSDS
R-phrases	R10 R20 R21 R38
S-phrases	S25
NFPA 704	3 1 0
Flash point	25 °C
Related compounds
Related aromatic hydrocarbons	benzene toluene o-xylene p-xylene
Supplementary data page
Structure and properties	n, εr, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

m-Xylene is an aromatic hydrocarbon, based on benzene with two methyl substituents.

It is an isomer of o-xylene and p-xylene. The m stands for meta, meaning the two methyl substituents are at locants 1 and 3 on the aromatic ring.

The major chemical use of metaxylene is in the manufacture of isophthalic acid, which is used as a copolymer to alter the properties of polyethylene terephthalate (PET) making PET more suitable for the manufacture of soft drinks bottles.

References

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