1,1'-Binaphthyl

1,1'-Binaphthyl

Names
Preferred IUPAC name 1,1′-Binaphthalene
Other names 1-Naphthalen-1-ylnaphthalene
Identifiers
CAS Number	604-53-5
3D model ( JSmol )	Interactive image
ECHA InfoCard	100.009.155
PubChem CID	11789
UNII	T87T28S609
CompTox Dashboard (EPA)	DTXSID70870671
SMILES C1=CC=C2C(=C1)C=CC=C2C3=CC=CC4=CC=CC=C43
Properties
Chemical formula	C20H14
Molar mass	254.332 g·mol−1
Appearance	Colorless solid
Density	1.299 g/cm3
Melting point	160 °C (320 °F; 433 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

1,1'-Binaphthyl is an organic compound with the formula (C₁₀H₇)₂. It is one of the dimers of naphthalene (or literally: dimers of naphthyl). A colorless solid, it has attracted some attention because the