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338680

Sigma-Aldrich

4′-Octyl-4-biphenylcarbonitrile

liquid crystal (nematic), 98%

Synonym(s):

4′-n -Octyl-4-cyanobiphenyl, 4′-Octyl-4-biphenylcarbonitrile, 4′-Octyl-4-cyanobiphenyl, 4′-Octyl[1,1′-biphenyl]-4-carbonitrile, 4-n -Octyl-4′-cyanobiphenyl, 4-Cyano-4′-n -octylbiphenyl, 4-Cyano-4′-octyl-1,1′-biphenyl, 4-Cyano-4′-octylbiphenyl, 4-Octyl-4′-cyanobiphenyl, p -n -Octyl-p ′-cyanobiphenyl, p -Cyano-p ′-octylbiphenyl, p -Octyl-p ′-cyanobiphenyl

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About This Item

Linear Formula:
CH3(CH2)7C6H4C6H4CN
CAS Number:
Molecular Weight:
291.43
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

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$148.00


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assay

98%

form

liquid crystal (nematic)

SMILES string

CCCCCCCCc1ccc(cc1)-c2ccc(cc2)C#N

InChI

1S/C21H25N/c1-2-3-4-5-6-7-8-18-9-13-20(14-10-18)21-15-11-19(17-22)12-16-21/h9-16H,2-8H2,1H3

InChI key

CSQPODPWWMOTIY-UHFFFAOYSA-N

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This Item
319856338656374784
assay

98%

assay

99% (CP)

assay

96%

assay

97%

Quality Level

100

Quality Level

200

Quality Level

-

Quality Level

100

form

liquid crystal (nematic)

form

-

form

liquid crystal (nematic)

form

liquid crystal

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.[1] 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.[2]

Application

Monolayer films of the LCs deposited onto highly ordered pyrolytic graphite, these self-assembled films display a wide variety of structural forms.[1]

pictograms

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signalword

Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

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


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Questions

1–3 of 3 Questions  
  1. Give the phase transition temperatures and name the different phases of this liquid crystalline compound 338680 4'-octyl-4-biphenyl carbonitrile

    1 answer
    1. The phase transition temperatures for this compound have not been determined. See the link below to the PubChem file for this material. There are a number of references and physical properties listed that may be of interest.
      https://pubchem.ncbi.nlm.nih.gov/compound/104289

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  2. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  3. What is the anisotropy refractive index and anisotropy electric permittivity for product 338680, 4´-Octyl-4-biphenylcarbonitrile?

    1 answer
    1. Literature values for the anisotropy refractive index and anisotropy electric permittivity of product 338680, 4´-Octyl-4-biphenylcarbonitrile are as follows:ne=1.673no=1.516in 27oCe||=12.8e^=6.65De=6.15in 39.4oC

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