1-Undecanethiol

Synonym(s):11-Mercapto-1-undecanol;1-UDT;Undecyl Mercaptan

CAS NO.：5332-52-5
Empirical Formula: C11H24S
Molecular Weight: 188.37
MDL number: MFCD00022097
SAFETY DATA SHEET (SDS)
Update Date: 2026-10-27 18:05:24

What is 1-Undecanethiol?

Chemical properties

liquid

The Uses of 1-Undecanethiol

UDT can be used to functionalize polycarbonate filter membrane for immunological experiments which can further be used in the fabrication of plasmonic flow through biosensor based applications. SAM of UDT can be used in the colloidal gold enhanced immunoassay. It may be used to form SAM on quartz crystal microbalance (QCM) gold electrodes which can be used as adhesive intermediate layers.

What are the applications of Application

1-Undecanethiol is used for hydrophobic self-assembled monolayers and to reduce non-specific protein adsorption

General Description

Liquid with a bad smell. Mp: -3°C; bp: 259.5°C. Density: 0.841 g cm-3 at 25°C.

Reactivity Profile

1-UNDECANETHIOL is 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.

Properties of 1-Undecanethiol

Melting point:	-3°C(lit.)
Boiling point:	103-104 °C3 mm Hg(lit.)
Density	0.841 g/mL at 25 °C(lit.)
refractive index	n20/D 1.459(lit.)
Flash point:	220 °F
Water Solubility	Insoluble in water
form	clear liquid
pka	10.50±0.10(Predicted)
Specific Gravity	0.847
color	Colorless to Almost colorless
Stability:	Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference	5332-52-5(CAS DataBase Reference)
EPA Substance Registry System	1-Undecanethiol (5332-52-5)

Safety information for 1-Undecanethiol

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.