Skip to Content
Merck
CN

74731

1-Octadecanethiol

purum, ≥95.0% (GC)

Synonym(s):

Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
CH3(CH2)17SH
CAS Number:
2885-00-9
Molecular Weight:
286.56
UNSPSC Code:
12352300
NACRES:
NA.23
PubChem Substance ID:
329765824
EC Number:
220-744-1
Beilstein/REAXYS Number:
1811934
MDL number:
MFCD00004886

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

1-Octadecanethiol, purum, ≥95.0% (GC)

InChI key

QJAOYSPHSNGHNC-UHFFFAOYSA-N

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

SMILES string

CCCCCCCCCCCCCCCCCCS

grade

purum

assay

≥95.0% (GC)

form

solid

bp

204-210 °C/11 mmHg (lit.)

mp

30-33 °C (lit.)

density

0.847 g/mL at 25 °C (lit.)

Quality Level

200

Looking for similar products? Visit Product Comparison Guide

Related Categories

Analysis Note

may contain precipitation in melt

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.

General description

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.

pictograms

Exclamation markEnvironment
GHS07,GHS09

signalword

Warning

hcodes

H315,H400

Hazard Classifications

Aquatic Acute 1 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
WXBF7146V
WXBF5555V
WXBF3207V
WXBF2745V
WXBD7803V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
Yanxia Hou et al.
Langmuir : the ACS journal of surfaces and colloids, 21(9), 4058-4065 (2005-04-20)
To make ultrathin films for the fabrication of artificial olfactory systems, odorant biosensors, we have investigated mixed Langmuir and Langmuir-Blodgett films of odorant-binding protein/amphiphile. Under optimized experimental conditions (phosphate buffer solution, pH 7.5, OBP-1F concentration of 4 mg L(-1), target
Ken Kobayashi et al.
Journal of chromatography. A, 1110(1-2), 95-101 (2006-02-14)
Three types of thiol compounds (n-octadecanethiol, thiophenol, and 2-phenylethanethiol) were used to modify the gold-coated polystyrene particles (dp. 5microm) to prepare a stationary phase for capillary liquid chromatography through the formation of self-assembled monolayer. The column with n-octadecanethiol-modified gold-coated polystyrene
Tao Zhang et al.
Nano letters, 10(11), 4738-4741 (2010-10-12)
We report studies on surface modification of graphene with 1-octadecanethiol and its application as heavy metal sensors. The alkanethiol molecules can self-assemble into large-scale highly ordered monolayers on single-layer graphene regardless of the roughness of graphene surfaces inherited from the
Qi-Shu Qu et al.
Journal of chromatography. A, 1198-1199, 95-100 (2008-06-10)
Monodispersed spherical gold particles synthesized and modified with n-octadecanethiol (C18-Au) were packed into a 100 microm I.D. capillary column and tested in capillary high-performance liquid chromatography (microHPLC). To the best of our knowledge, this represents the first report on the
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service