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328510

Sigma-Aldrich

4′-Pentyl-4-biphenylcarbonitrile

liquid crystal (nematic), 98%

Synonyme(s) :

4-Cyano-4-pentylbiphenyl, 4-Pentyl-4-cyanobiphenyl, 5CB

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About This Item

Formule linéaire :
CH3(CH2)4C6H4C6H4CN
Numéro CAS:
40817-08-1
Poids moléculaire :
249.35
Numéro CE :
255-093-2
Numéro MDL:
MFCD00036350
Code UNSPSC :
12352103
ID de substance PubChem :
24859381
Nomenclature NACRES :
NA.23

155,00 $

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Niveau de qualité

100

Essai

98%

Forme

liquid crystal (nematic)

Indice de réfraction

n20/D 1.532 (lit.)

pb

140-150 °C/0.5 mmHg (lit.)

Densité

1.008 g/mL at 25 °C (lit.)

Chaîne SMILES 

CCCCCc1ccc(cc1)-c2ccc(cc2)C#N

InChI

1S/C18H19N/c1-2-3-4-5-15-6-10-17(11-7-15)18-12-8-16(14-19)9-13-18/h6-13H,2-5H2,1H3

Clé InChI

HHPCNRKYVYWYAU-UHFFFAOYSA-N

Catégories apparentées

Description générale

4′-Pentyl-4-biphenylcarbonitrile (5CB) is a nematic liquid crystal. 5CB undergoes phase transition from crystalline to nematic then to isotropic state at 18oC and 35oC respectively. It may be produced by modifying biphenyl.2

Application

Attaching 5CB to an aqueous-liquid crystal interface by redox active surfactant has been investigated.[1]

Pictogrammes

Exclamation mark
GHS07

Mention d'avertissement

Warning

Mentions de danger

H317

Classification des risques

Skin Sens. 1

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 3

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificats d'analyse (COA)

Lot/Batch Number
MKCW0348
MKCT1852
WXBD8632V
MKCQ5621
MKCN4589

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Piotr Popov et al.
Scientific reports, 7(1), 1603-1603 (2017-05-11)
Nematic liquid crystals (NLCs) of achiral molecules and racemic mixtures of chiral ones form flat films and show uniform textures between circular polarizers when suspended in sub-millimeter size grids and immersed in water. On addition of chiral dopants to the
Christos Grigoriadis et al.
ACS nano, 5(11), 9208-9215 (2011-10-07)
The nematic-to-isotropic, crystal-to-nematic, and supercooled liquid-to-glass temperatures are studied in the liquid crystal 4-pentyl-4'-cyanobiphenyl (5CB) confined in self-ordered nanoporous alumina. The nematic-to-isotropic and the crystal-to-nematic transition temperatures are reduced linearly with the inverse pore diameter. The finding that the crystalline
Yi Huang et al.
Optics express, 26(8), 10452-10461 (2018-05-03)
This paper proposes and demonstrates a particle free method for flow field visualizations by analyzing liquid crystal polarizations. The proposed concept is implemented by imaging of liquid crystal flow under microfluidic environment using a crossed polarization microscopy configuration. Fringe patterns
Beom-Kyu Lee et al.
Scientific reports, 7(1), 15916-15916 (2017-11-23)
It is generally thought that colloidal particles in a nematic liquid crystal do not generate the first multipole term called deformation elastic charge as it violates the mechanical equilibrium. Here, we demonstrate theoretically and experimentally that this is not the
Maria-Victoria Meli et al.
Journal of the American Chemical Society, 130(13), 4326-4333 (2008-03-14)
Langmuir monolayers (monolayers of insoluble molecules formed at the surface of water), and associated Langmuir-Blodgett/Schaefer monolayers prepared by transfer of Langmuir films to the surfaces of solids, are widely used in studies aimed at understanding the physicochemical properties of biological
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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