121219-25-8

Basic information

• Product Name: 1,3-Difluoro-5-pentylbenzene
• Synonyms: 1,3-Difluoro-5-pentylbenzene;Benzene, 1,3-difluoro-5-pentyl-;,3-Difluoro-5-pentylbenzene
• CAS NO: 121219-25-8
• Molecular Formula: C₁₁H₁₄F₂
• Molecular Weight: 184.228
• Product Categories: Liquid crystal intermediates
• Mol File: 121219-25-8.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 197.2 °C at 760 mmHg
• Flash Point: 58.4 °C
• Appearance: /
• Density: 1.022
• Vapor Pressure: 0.54mmHg at 25°C
• Refractive Index: 1.463
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 1,3-Difluoro-5-pentylbenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Difluoro-5-pentylbenzene(121219-25-8)
• EPA Substance Registry System: 1,3-Difluoro-5-pentylbenzene(121219-25-8)

Safety Data

• Hazardous Substances Data: 121219-25-8(Hazardous Substances Data)

Usage

Uses

1,3-difluoro-5-pentylbenzene is a useful reactant for the preparation of a liquid crystal compound having high dielectric anisotropy.

InChI:InChI=1/C11H14F2/c1-2-3-4-5-9-6-10(12)8-11(13)7-9/h6-8H,2-5H2,1H3

Upstream product

• 121219-24-7 3,5-difluoro-1-pent-1'-enylbenzene 
• 110-62-3 pentanal 
• 461-96-1 3,5-difluorobromobenzene 
• 121219-23-6 1-(3,5-difluorophenyl)pentan-1-ol 
• 110-53-2 1-Bromopentane 
• 628-17-1 amyl iodide 

Downstream Products

• 123843-55-0 2,6-difluoro-4-pentylbenzoic acid 
• 123843-78-7 4-cyano-3-fluorophenyl 2,6-difluoro-4-pentylbenzoate 
• 1443253-88-0 4'S-[2,6-difluoro-4-pentylphenyl]ethynyl-4'-(2-methyl-1-butyl)biphenyl 
• 147437-93-2 C₁₁H₁₃F₂I 

Relevant articles and documents

New low polar tolane cholesterics designed for infrared applications

We have designed, synthesized and evaluated the physical properties of new fluorinated phenyltolane based chiral liquid crystal materials with 2-methylbutyl terminal chain. The 2- or 2,6-fluorosubstitution in combination with the phenyltolane core brings surprising improvement of mesomorphic properties. The investigated compounds are characterized by a broad temperature range of the cholesteric (chiral nematic N?) phase, very low melting temperatures and easy thermal control of selective reflection in the near infrared region. The moderate helical twisting power β, high optical anisotropy and source of a blue phase make these compounds attractive for cholesteric mixture formulations.

FLUORINATED OLIGOPHENYLS AND THEIR USE IN LIQUID CRYSTAL MATERIALS

This invention relates to fluorinated oligophenyls of formula (I), in which a is 0 or 1 and in which the terminal sub-stituents R1, R2 and R3 are each independently an alkyl or alkenyl residue each with up to 15 C atoms, optionally substitut-ed by CN or by at least one halogen atom, and wherein one or more non adjacent CH2 groups of these residues may be replaced by -O-, -S-, -CO-, -O-CO-, -CO-O-, -O-CO-O- or -C≡C-, one of the residues R1 and R2 may also denote a group of formula (II), any one of the following pairs of lateral substituents are both fluorine: (A, B), (C, D), (D, E), (C, E), (B, C), (D, J), (D, K), (A, C), (C, J), (C?, D?), (D?, E), (D?, A), (C?, E), (C?, A), (D?, J?), (D?, K?), (C?, J?), (B, G), (A, G), all of the other lateral substituents being hydrogen or fluorine, and to their use as components of liquid crystalline compositions.