1,8-Octanedithiol

Synonym(s):1,8-Dimercaptooctane

CAS NO.：1191-62-4
Empirical Formula: C8H18S2
Molecular Weight: 178.36
MDL number: MFCD00003574
EINECS: 214-738-8
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 01:52:36

What is 1,8-Octanedithiol?

Chemical properties

liquid

Chemical properties

1,8-Octanedithiol has a sulfurous, meaty odor. FEMA indicates that total dithiol added to any food should not exceed 1.0 ppm

The Uses of 1,8-Octanedithiol

OCT may be used as a processing additive that can functionalize the electrode layer to enhance the power efficiency of P3HT:PCBM solar cells. It may also be used to form a SAM on gold electrodes to enhance the electrochemical properties.

What are the applications of Application

1,8-Octanedithiol is a compound used in self-assembled monolayers (SAMs)

Definition

ChEBI: 1,8-Octanedithiol is an alkanethiol.

General Description

1,8-Octanedithiol (OCT) is an alkanedithiol, which forms a self-assembled monolayer (SAM) on a variety of metal surfaces. OCT contains linearly arranged carbon-carbon bonds (C?C) and two sulfur atoms at the end facilitating the attachment with the surface atoms of the substrates. It mainly forms an organo-metallic system, which can be used to improve the electron transport medium for a wide range of electronic applications.

Properties of 1,8-Octanedithiol

Melting point:	1°C(lit.)
Boiling point:	269-270 °C (lit.)
Density	0.97 g/mL at 25 °C (lit.)
refractive index	n20/D 1.505(lit.)
FEMA	3514 \| 1,8-OCTANEDITHIOL
Flash point:	>230 °F
form	Liquid
pka	10.19±0.10(Predicted)
color	Colorless to pale yellow
Odor	at 0.10 % in propylene glycol. sulfurous meaty mushroom earthy
Sensitive	Air Sensitive
JECFA Number	541
BRN	1735431
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.
CAS DataBase Reference	1191-62-4(CAS DataBase Reference)

Safety information for 1,8-Octanedithiol

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P330:Rinse mouth. P501:Dispose of contents/container to..…