4'-Octyl[1,1'-biphenyl]-4-carbonitrile

Synonym(s):p -n -Octyl-p ′-cyanobiphenyl;p -Cyano-p ′-octylbiphenyl;p -Octyl-p ′-cyanobiphenyl;4′-n -Octyl-4-cyanobiphenyl;4′-Octyl[1,1′-biphenyl]-4-carbonitrile

CAS NO.：52709-84-9
Empirical Formula: C21H25N
Molecular Weight: 291.43
MDL number: MFCD00075146
EINECS: 258-120-6
SAFETY DATA SHEET (SDS)
Update Date: 2025-07-04 14:25:20

4'-Octyl[1,1'-biphenyl]-4-carbonitrile Structural

What is 4'-Octyl[1,1'-biphenyl]-4-carbonitrile?

Chemical properties

Colorless liquid

The Uses of 4'-Octyl[1,1'-biphenyl]-4-carbonitrile

Intermediates of Liquid Crystals

The Uses of 4'-Octyl[1,1'-biphenyl]-4-carbonitrile

Monolayer films of the LCs deposited onto highly ordered pyrolytic graphite, these self-assembled films display a wide variety of structural forms.

General Description

4′-octyl-4-biphenylcarbonitrile (8CB) is a low molar mass liquid crystal (LC), which shows different liquid crystalline phases depending on temperature conditions. Under normal temperature conditions 8CB exists only as a bulk smectic-A phase. LCs are responsive to subtle changes in temperature, shear, electric (or magnetic) fields, and the structure of solid surfaces with which they are in contact.

Properties of 4'-Octyl[1,1'-biphenyl]-4-carbonitrile

Melting point:	20-22℃
Boiling point:	218°C/2mmHg(lit.)
Density	1.00±0.1 g/cm3(Predicted)
Flash point:	>230 °F
storage temp.	Sealed in dry,Room Temperature
form	liquid crystal (nematic)
color	White or Colorless
Water Solubility	Insoluble in water.
λmax	276nm(EtOAc)(lit.)
CAS DataBase Reference	52709-84-9(CAS DataBase Reference)
NIST Chemistry Reference	[1,1'-Biphenyl]-4-carbonitrile, 4'-octyl-(52709-84-9)
EPA Substance Registry System	[1,1'-Biphenyl]-4-carbonitrile, 4'-octyl- (52709-84-9)

Safety information for 4'-Octyl[1,1'-biphenyl]-4-carbonitrile

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.