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Sigma-Aldrich

1-Octadecanethiol

purum, ≥95.0% (GC)

Synonyme(s) :

Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan

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About This Item

Formule linéaire :
CH3(CH2)17SH
Numéro CAS:
2885-00-9
Poids moléculaire :
286.56
Numéro Beilstein :
1811934
Numéro CE :
220-744-1
Numéro MDL:
MFCD00004886
Code UNSPSC :
12352300
ID de substance PubChem :
329765824
Nomenclature NACRES :
NA.23

Qualité

purum

Niveau de qualité

200

Pureté

≥95.0% (GC)

Forme

solid

Point d'ébullition

204-210 °C/11 mmHg (lit.)

Pf

30-33 °C (lit.)

Densité

0.847 g/mL at 25 °C (lit.)

Chaîne SMILES 

CCCCCCCCCCCCCCCCCCS

InChI

1S/C18H38S/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3

Clé InChI

QJAOYSPHSNGHNC-UHFFFAOYSA-N

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Description générale

1-Octadecanethiol (ODT) is a water soluble sulfur compound with an 18 carbon alkyl chain, which forms a strong hydrophobic assembly with transition metals, like gold .It forms self-assembled monolayers (SAMs) on the surface of such transition metals. The thiol membrane when covalently bonded with the surface of the metal electrode, it shows electrostriction phenomenon leading to variation in capacitance.ODT SAMs have a hydrophobic surface with contact angle of 102oC.

Application

ODT is used to deposit thiolated molecules onto the surface of gold substrates, such as
  • SAMs on gold quartz crystal resonators.
  • on the tip of atomic force microscope probes.
  • capacitive sensors.

Remarque sur l'analyse

may contain precipitation in melt

Pictogrammes

Exclamation markEnvironment
GHS07,GHS09

Mention d'avertissement

Warning

Mentions de danger

H315,H400

Classification des risques

Aquatic Acute 1 - Skin Irrit. 2

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

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Certificats d'analyse (COA)

Lot/Batch Number
WXBD6753V
WXBD5865V
WXBD3624V
WXBD0947V
WXBC6087V

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Polarization modulation Fourier transform infrared reflectance measurements of thin films and monolayers at metal surfaces utilizing real-time sampling electronics.
Barbara BJ, et al
Analytical Chemistry, 63(1), 55-60 (1991)
Reduced graphene oxide-templated photochemical synthesis and in situ assembly of Au nanodots to orderly patterned Au nanodot chains.
Xiao Huang et al.
Small (Weinheim an der Bergstrasse, Germany), 6(4), 513-516 (2010-01-16)
Xianghui Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 26(5), 3654-3658 (2009-12-17)
We have reported an easy means in this paper to imitate the "lotus leaf" by constructing a superhydrophobic surface through a process combining both electroless galvanic deposition and self-assembly of n-octadecanethiol. Superhydrophobicity with a static water contact angle of about
Qishu Qu et al.
Electrophoresis, 31(3), 556-562 (2010-02-02)
Nonporous monodispersed silica spheres of 1.3 microm were coated with gold nanoparticles (AuNPs) and subsequently coated with n-octadecanethiol. By transmission electron microscopy analysis, the average diameter of the AuNPs on the silica spheres was determined to be 12 nm. The
Wei Wei Yao et al.
The journal of physical chemistry. B, 113(46), 15263-15271 (2009-10-30)
A procedure was developed for initiating electron transfer from a gold electrode to a low molecular weight electron acceptor present inside supported lipid (lecithin) bilayers, followed by further electron transfer to an electron acceptor present in an aqueous solution. The
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