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74731 Sigma-Aldrich

1-Octadecanethiol

purum, ≥95.0% (GC)

Synonym: Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan

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Properties

Related Categories Building Blocks, Chemical Synthesis, Organic Building Blocks, Sulfur Compounds, Thiols/Mercaptans More...
InChI Key   QJAOYSPHSNGHNC-UHFFFAOYSA-N
grade   purum
assay   ≥95.0% (GC)
bp   204-210 °C/11 mmHg(lit.)
mp   30-33 °C(lit.)
density   0.847 g/mL at 25 °C(lit.)

Description

Analysis Note

may contain precipitation in melt

Other Notes

Same product — same quality — now Sigma-Aldrich brand

Packaging

50, 250 g in glass bottle

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.

Price and Availability

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
UN 3335
WGK Germany 
3
Flash Point(F) 
365 °F
Flash Point(C) 
185 °C
Protocols & Articles
Peer-Reviewed Papers
15

References

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