8.14444

1-Octadecanethiol

for synthesis

• Synonym(s): 1-Octadecanethiol, n-Octadecyl mercaptan, Stearyl mercaptane
• Linear Formula: CH₃-(CH₂)₁₆-CH₂-SH
• CAS Number: 2885-00-9
• Molecular Weight: 286.56
• MDL number: MFCD00004886
• UNSPSC Code: 12352105
• EC Index Number: 220-744-1
• NACRES: NA.22

Properties

• vapor pressure: <0.5 hPa ( 20 °C)
• Quality Level: 200
• assay: ≥98.0% (GC)
• form: solid
• autoignition temp.: >200 °C
• potency: >5000 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rat)
• bp: 366 °C
• mp: 28-31 °C
• transition temp: flash point 185 °C
• density: 0.847 g/cm³ at 20 °C
• storage temp.: 2-30°C
• 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
• InChI key: QJAOYSPHSNGHNC-UHFFFAOYSA-N

Description

Application

• Self-Assembled 1-Octadecanethiol Membrane on Pd/ZnO for a Selective Room Temperature Flexible Hydrogen Sensor: This study explores the use of 1-octadecanethiol in the development of a selective room temperature hydrogen sensor, demonstrating its potential in enhancing sensor performance (Pathak, Cho, 2021).
• Property improvement of GaAs surface by 1-octadecanethiol passivation: The article investigates the impact of 1-Octadecanethiol passivation on GaAs surfaces, revealing improvements in surface properties and potential applications in semiconductor technologies (Zhou et al., 2019).
• Sputtering synthesis and optical investigation of octadecanethiol-protected fluorescent Au nanoparticles: This research examines the optical properties of gold nanoparticles protected by 1-octadecanethiol, highlighting their potential in various optical and electronic applications (Ishida et al., 2015).
• Kinetics of radical telomerization of acrylic acid in the presence of 1-octadecanethiol: The study focuses on the telomerization process of acrylic acid with 1-octadecanethiol, offering insights into the polymerization kinetics and applications in polymer science (Mezhuev et al., 2018).
• Formation of a mixed monolayer on a gold surface using fluorobenzenethiol and alkanethiol: This article describes the formation of mixed monolayers using 1-octadecanethiol, which could be crucial for developing advanced molecular assemblies on gold surfaces (Ikematsu et al., 2019).

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Appearance of substance (visual): turbidity
Melting range (lower value): ≥ 28 °C
Melting range (upper value): ≤ 32 °C
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Safety Information

• pictograms: GHS07,GHS09
• signalword: Warning
• hcodes: H315 - H400
• pcodes: P264 - P273 - P280 - P302 + P352 - P332 + P313 - P362 + P364
• Hazard Classifications: Aquatic Acute 1 - Skin Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable