Structure via PubChem · Public domain (PubChem)
m-xylene
Sign in to saveAlso known as meta-xylene, m-xylol, 1,3-dimethylbenzene, 3-xylene, m-dimethylbenzene, m-methyltoluene, 1,3-Dimethylbenzol, 1,3-xylene
'''m-Xylene (meta-xylene') is an aromatic hydrocarbon. It is one of the three isomers of dimethylbenzene known collectively as xylenes. The m- stands for meta-, indicating that the two methyl groups in m-xylene occupy positions 1 and 3 on a benzene ring. It is in the positions of the two methyl groups, their arene substitution pattern, that it differs from the other isomers, o-xylene and p''-xylene. All have the same chemical formula C6H4(CH3)2. All xylene isomers are colorless and highly flammable.
Chemical data
- Formula
- C8H10
- Molecular weight
- 106.16 g/mol
- IUPAC name
- 1,3-xylene
- SMILES
- CC1=CC(=CC=C1)C
- InChIKey
- IVSZLXZYQVIEFR-UHFFFAOYSA-N
- XLogP
- 3.2
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Wikidata facts
Show 16 more facts
- immediately dangerous to life or health
- 3906
- melting point
- -47.8
- chemical formula
- C₈H₁₀
- NIOSH Pocket Guide ID
- 0669
- density
- 0.86
- short-term exposure limit
- 655
- boiling point
- 139.12
- vapor pressure
- 9
- flash point
- 82
- lower flammable limit
- 1.1
- upper flammable limit
- 7
- ionization energy
- 8.56
- time-weighted average exposure limit
- 435
- found in taxon
- Scleromitrion diffusum
- canonical SMILES
- CC1=CC(=CC=C1)C
- Commons category
- Meta-Xylene
via Wikidata · CC0
~2 min read
Encyclopedic overview
4 sectionsContents
- Production and use
- Toxicity and exposure
- See also
- References
'''m-Xylene (meta-xylene') is an aromatic hydrocarbon. It is one of the three isomers of dimethylbenzene known collectively as xylenes. The m- stands for meta-, indicating that the two methyl groups in m-xylene occupy positions 1 and 3 on a benzene ring. It is in the positions of the two methyl groups, their arene substitution pattern, that it differs from the other isomers, o-xylene and p-xylene. All have the same chemical formula C6H4(CH3)2. All xylene isomers are colorless and highly flammable.
==Production and use== Petroleum contains about 1 weight percent xylenes. The meta isomer can be isolated from a mix of xylenes by the partial sulfonation (to which other isomers are less prone) followed by removal of unsulfonated oils and steam distillation of the sulfonated product.
Excerpted from Wikipedia’s “m-xylene” article, available under the CC BY-SA 4.0 licence.