1-Octadecanethiol, 98%

About 1-Octadecanethiol, 98%

1-Octadecanethiol is an organosulfur compound carrying the CAS registry number 2885-00-9 at a purity of 98%. The compound has the formula C18H38S, corresponding to a molecular weight of 286.6 g/mol. Its systematic (IUPAC) name is octadecane-1-thiol. Alternative names: Mercaptan C18 and Octadecyl mercaptan.

It is supplied as a white to colourless solid to liquid. Reported physical data include a melting point of 30-33 °C and a density of 0.847 g/mL at 25 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include organic synthesis and API synthesis. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Available in 25 mL, 100 mL and 500 g packs, 1-Octadecanethiol is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	1-Octadecanethiol, 98%
Catalogue No.	VQ-010747
CAS Number	2885-00-9
IUPAC name	octadecane-1-thiol
Molecular formula	C₁₈H₃₈S
Molecular weight	286.6 g/mol
Exact mass	286.2694
Purity / assay	98%
HSN code	29420090
InChIKey	QJAOYSPHSNGHNC-UHFFFAOYSA-N
SMILES	CCCCCCCCCCCCCCCCCCS
PubChem CID	17905

Physical properties
Physical form	Liquid
Appearance	White to colourless solid to liquid
Melting point	30-33 °C
Density	0.847 g/mL at 25 °C
LogP (XLogP3)	9.4
H-bond donors / acceptors	1 / 1
TPSA	1 Å²
UN number	UN 3335
Synonyms	Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan, n-Octadecyl mercaptan, 1-Mercaptooctadecane, n-octadecanethiol, octadecylthiol, 1-Octadecyl mercaptan, Octadecanethiol, octadecane thiol, 1-octadecanthiol, 1-octadecylmercaptan

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H413May cause long lasting harmful effects to aquatic life

Precautionary statements: P261, P264, P264 + P265, P271, P273, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 1-Octadecanethiol, 98%?

The CAS Registry Number of 1-Octadecanethiol, 98% is 2885-00-9. It is also known as Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan.

What is the molecular formula and molecular weight of 1-Octadecanethiol, 98%?

1-Octadecanethiol, 98% has the molecular formula C18H38S and a molecular weight of 286.6 g/mol. Its IUPAC name is octadecane-1-thiol.

Which grade and pack sizes of 1-Octadecanethiol, 98% can I order?

We supply 1-Octadecanethiol, 98% in (98%) grade, in 25 mL, 100 mL, 500 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Octadecanethiol, 98%?

Yes. Every lot of 1-Octadecanethiol, 98% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 1-Octadecanethiol, 98% be shipped internationally?

Yes. 1-Octadecanethiol, 98% is classified as hazardous (UN 3335), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.