1-Methylnaphthalene

1-Methylnaphthalene

Names
IUPAC name 1-Methylnaphthalene
Other names α-methylnaphthalene
Identifiers
CAS Number	90-12-0 Y
ChEBI	CHEBI:50717 Y
ChEMBL	ChEMBL383808 Y
ChemSpider	6736 Y
EC Number	201-966-8
Jmol 3D model	Interactive image
KEGG	C14082 Y
PubChem	7002
InChI InChI=1S/C11H10/c1-9-5-4-7-10-6-2-3-8-11(9)10/h2-8H,1H3 Y Key: QPUYECUOLPXSFR-UHFFFAOYSA-N Y InChI=1/C11H10/c1-9-5-4-7-10-6-2-3-8-11(9)10/h2-8H,1H3 Key: QPUYECUOLPXSFR-UHFFFAOYAD
SMILES c1cccc2cccc(c12)C
Properties
Chemical formula	C11H10
Molar mass	142.20 g/mol
Appearance	Liquid
Density	1.001 g/mL
Melting point	−22 °C (−8 °F; 251 K)
Boiling point	240–243 °C (464–469 °F; 513–516 K)
Vapor pressure	4.91
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

1-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). It has a cetane number of zero, and was previously used as the lower reference for cetane number. However, due to the expense and handling difficulty of 1-Methylnaphthalene, it was replaced in this capacity by isocetane, with a CN of 15.

On February 22, 2014, NASA announced a greatly upgraded database for detecting and monitoring PAHs, including 1-Methylnaphthalene, in the universe. According to NASA scientists, over 20% of the carbon in the universe may be associated with PAHs, possible starting materials for the formation of life. PAHs seem to have been formed shortly after the Big Bang, are abundant in the universe, and are associated with new stars and exoplanets.

See also

• List of interstellar and circumstellar molecules

External links

• PubChem Entry for 1-methylnaphthalene