Octadecanethiol

Octadecanethiol Basic information
Product Name:Octadecanethiol
Synonyms:MERCAPTAN C18;NANOTHINKS(R) 18;N-OCTADECYL MERCAPTAN;N-OCTADECANETHIOL;OCTADECANETHIOL;STEARYL MERCAPTAN;STEARYL MERCAPTANE;1-Mercaptooctadecane
CAS:2885-00-9
MF:C18H38S
MW:286.56
EINECS:220-744-1
Product Categories:Building Blocks;Chemical Synthesis;Organic Building Blocks;Sulfur Compounds;Thiols/Mercaptans;Phenoles and thiophenoles;Halogenated Heterocycles ,Furans ,Coumarins;bc0001;K00001
Mol File:2885-00-9.mol
Octadecanethiol Structure
Octadecanethiol Chemical Properties
Melting point 30-33 °C(lit.)
Boiling point 204-210 °C11 mm Hg(lit.)
density 0.847 g/mL at 25 °C(lit.)
vapor pressure <0.5 hPa (20 °C)
refractive index n20/D 1.3610
Fp 55 °F
storage temp. Store below +30°C.
pka10.49±0.10(Predicted)
form Crystalline Solid
Specific Gravity0.832 (30℃)0.847
color White
Water Solubility Insoluble
BRN 1811934
Exposure limitsNIOSH: Ceiling 0.5 ppm(5.9 mg/m3)
Stability:Stability Combustible. Stable. Incompatible with strong oxidizing agents, bases, reducing agents, alkali metals.
InChIKeyQJAOYSPHSNGHNC-UHFFFAOYSA-N
LogP8 at 20℃
CAS DataBase Reference2885-00-9(CAS DataBase Reference)
NIST Chemistry Reference1-Octadecanethiol(2885-00-9)
EPA Substance Registry System1-Octadecanethiol (2885-00-9)
Safety Information
Hazard Codes F,Xi
Risk Statements 36/37/38
Safety Statements 7-16-37/39-26-36
RIDADR UN 1170 3/PG 2
WGK Germany 3
Autoignition Temperature>200 °C
TSCA Yes
HS Code 29309070
ToxicityLD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rat > 2000 mg/kg
MSDS Information
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Octadecanethiol English
SigmaAldrich English
ACROS English
ALFA English
Octadecanethiol Usage And Synthesis
Chemical Propertieswhite powder with an extremely unpleasant smell
UsesODT is used in the surface modification of gold nanoparticle (AuNPs)/Nickel (Ni) foam conjugate for the preparation of a 3D surface enhanced Raman spectroscopy(SERS) substrate for the detection of organic pollutants. It may also be used enhance the superhydrophobic properties for different materials like nano-sized copper films, graphene and silica for different applications like mercury detection and electrochemical analysis.
UsesOrganic intermediate, synthetic rubber processing.
Uses1-Octadecanethiol (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 Description1-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.
Reactivity ProfileOctadecanethiol is non-flammable but combustible (Flash point >100°F and <140°F). Incompatible with oxidizing agents, strong acids and strong bases, alkali metals, and nitric acid. Can react with water, steam or acids to produce toxic and flammable vapors. Reacts violently with powerful oxidizing agents such as calcium hypochlorite(Ca(OCl)2) to generate SOx. Reacts with hydrides to form flammable H2 gas; reacts with halogenated hydrocarbons to yield HX. Reacts exothermically with aldehydes. Emits toxic compounds of sulfur when when heated to decomposition.
HazardStrong irritant.
Flammability and ExplosibilityNotclassified
Octadecanethiol Preparation Products And Raw materials
Preparation Productsmicrodispersoid acrylate resin filling emulsion-->Pyridat-->DI-N-OCTADECYL DISULFIDE
benzyl stearate DIOCTADECYL SULFIDE PYRITHIOXIN DIHYDROCHLORIDE Thioetheramide PC OCTADECYLMETHYLSULFIDE (C20:0) COENZYME A ALPHA-1-D-GALACTOPYRANOSYL-4-O-[1-(2-OCTADECYLTHIOETHYL)-(BETA-D-GALACTOPYRANOSIDE)] Octadecyl acrylate TETRAKIS(OCTADECYLTHIO)TETRATHIAFULVALENE ETHYL 2-(OCTADECYLTHIO)BENZOATE, 99 STEAROYL COENZYME A, [STEAROYL 9,10-3H] PYRITHIOXIN SODIUM ETHANETHIOLATE OCTADECYL SULFOXIDE ETHYL OCTADECYL SULFIDE STEAROYL COENZYME A BEHINOYL COENZYME A ALPHA-D-GLC-[1->6]-ALPHA-D-GLC-[1->4]-ALPHA-D-GLC-[1->4]-BETA-D-GLC-1->O-OTE

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