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Aliphatic and alicyclic building blocks

Hexadecanethiol

Also known as 1-Hexadecanethiol, hexadecane-1-thiol, Cetyl mercaptan

CAS 2917-26-2Formula C16H34SMolar mass 258.52 g/molEC 220-846-6
GHS signal word: Warning. Pictograms: Harmful or irritant 10 suppliers listed
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Hexadecanethiol chemical structure, C16H34S, CAS 2917-26-2
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Liquid
Melting point
18 °C
Density
Relative density (water = 1): 0.84
Flash point
135 °C
Solubility
Solubility in water: none
HS code
293090
Category
Aliphatic and alicyclic building blocks
UN number
UN 1228
Illustrative photo, a closed 1000 litre IBC tote in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Hexadecanethiol?

Plain description, key identifiers and synonyms

1-hexadecanethiol appears as colorless liquid or white solid (below 19 °C) with a strong unpleasant odor. Density (as liquid at 25 °C): 0.83 g/cm3.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
hexadecane-1-thiol
CAS number
2917-26-2 CAS number cross-checkedOther or deprecated CAS: 22208-70-4
EC number
220-846-6
Molecular formula
C16H34S
UNII
QR98QIO1QL
MDL number
MFCD00011677
InChIKey
ORTRWBYBJVGVQC-UHFFFAOYSA-N
InChI
InChI=1S/C16H34S/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17/h17H,2-16H2,1H3
SMILES (canonical and isomeric)
CCCCCCCCCCCCCCCCS

Synonyms

  • 1-Hexadecanethiol
  • hexadecane-1-thiol
  • Cetyl mercaptan
  • Hexadecyl mercaptan
  • n-Hexadecanethiol
  • n-Hexadecyl mercaptan
  • hexadecylthiol
  • 1-Mercaptohexadecane
  • n-hexadecylthiol
  • Hexadecanethiol-1
  • 1-Cetanethiol
  • Cetylmercaptan
  • hexadecylmercaptan
  • 1-Hexadecanethiol, 99%
  • n-Hexadecyl mercaptan, >95%
  • 1-Hexadecanethiol, >=95.0% (GC)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.
Melting point
18 °Cexp.
Density
Relative density (water = 1): 0.84exp.
Flash point
135 °Cexp.
Solubility
Solubility in water: noneexp.
Vapour pressure
Vapor pressure, Pa at 20 °C: 10exp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
258.52 g/molcalc.
Exact mass
258.2381 Dacalc.
LogP (octanol/water)
6.4calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
14calc.
Heavy atoms
17calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H319Causes serious eye irritation.
  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (6)
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P337 + P317If eye irritation persists: Get medical help.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1228

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Hexadecanethiol suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 10 suppliers
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Where suppliers are based

10 suppliers in 5 countries

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Hexadecanethiol price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Hexadecanethiol is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Hexadecanethiol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Hexadecanethiol, based on the data on this page

What is Hexadecanethiol?

1-hexadecanethiol appears as colorless liquid or white solid (below 19 °C) with a strong unpleasant odor. Density (as liquid at 25 °C): 0.83 g/cm3.

What is the CAS number of Hexadecanethiol?

The CAS registry number of Hexadecanethiol is 2917-26-2. Other or deprecated CAS numbers: 22208-70-4.

What is the molecular formula and weight of Hexadecanethiol?

The molecular formula of Hexadecanethiol is C16H34S and its molar mass is 258.52 g/mol.

What is Hexadecanethiol used for?

Known uses and roles of Hexadecanethiol include building blocks in research and laboratory.

Is Hexadecanethiol hazardous?

Hexadecanethiol carries the GHS signal word "Warning". Main hazards: causes serious eye irritation, may cause long lasting harmful effects to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Hexadecanethiol?

Hexadecanethiol is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Hexadecanethiol?

CompoundList lists 10 suppliers of Hexadecanethiol in China, Switzerland, Germany, Iran and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Hexadecanethiol?

Suppliers quote Hexadecanethiol on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Hexadecanethiol

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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