1,8-Octanedithiol - ≥98% , CAS No.1191-62-4

CAS: 1191-62-4 Cat. No.: O109630 Molecular Weight: 178.36 EC Number: 214-738-8
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
O0374 | FEMA No. 3514 | SCHEMBL63238 | MFCD00003574 | Q27282247 | Tox21_303621 | CHEBI:172319 | Octane-1,8-dithiol | 1,8-Dimercaptooctane | OCTANEDITHIOL, 1,8- | 1,8-Octamethylenedithiol | AKOS015897631 | 1,8-Octanedithiol, >=97%, FG | 1,8-OCTANEDITHIOL [
Storage
Room temperature,Argon charged,Cool
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
O109630-1g
2
$17.90
5g
O109630-5g
1
$59.90
25g
O109630-25g
1
$199.90
100g
O109630-100g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$79.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Argon charged,Cool Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 7 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Product Introduction

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.


Application

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.

Specifications

Synonyms
O0374 | FEMA No. 3514 | SCHEMBL63238 | MFCD00003574 | Q27282247 | Tox21_303621 | CHEBI:172319 | Octane-1, 8-dithiol | 1, 8-Dimercaptooctane | OCTANEDITHIOL, 1, 8- | 1, 8-Octamethylenedithiol | AKOS015897631 | 1, 8-Octanedithiol, >=97%, FG | 1, 8-OCTANEDITHIOL [
Specifications & Purity
≥98%
Storage
Room temperature, Argon charged, Cool
Shipped In
Normal
Purity
≥98%
Names and Identifiers
Canonical SmilesC(CCCCS)CCCS
IUPAC Nameoctane-1,8-dithiol
InChIKeyPGTWZHXOSWQKCY-UHFFFAOYSA-N
INCHI1S/C8H18S2/c9-7-5-3-1-2-4-6-8-10/h9-10H,1-8H2
Isomeric SMILES C(CCCCS)CCCS
WGK Germany 3
RTECS RG9610000
Molecular Weight 178.36
Reaxy-Rn 1735431
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1735431&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganosulfur compounds
ClassThiols
SubclassAlkylthiols
Intermediate Tree Nodes Not available
Direct ParentAlkylthiols
Alternative Parents Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Alkylthiol - Hydrocarbon derivative - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

16 results found

Lot NumberCertificate TypeDateItem
F2604697Certificate of AnalysisMay 27, 2026 O109630
F2604698Certificate of AnalysisMay 27, 2026 O109630
F2604700Certificate of AnalysisMay 27, 2026 O109630
F2604707Certificate of AnalysisMay 27, 2026 O109630
E1803088Certificate of AnalysisJan 05, 2026 O109630
E1803089Certificate of AnalysisJan 05, 2026 O109630
J2515766Certificate of AnalysisOct 09, 2025 O109630
J2515767Certificate of AnalysisOct 09, 2025 O109630
K21171116Certificate of AnalysisSep 24, 2025 O109630
B2524202Certificate of AnalysisFeb 12, 2025 O109630
B2524230Certificate of AnalysisFeb 12, 2025 O109630
B2524231Certificate of AnalysisFeb 12, 2025 O109630
B2524232Certificate of AnalysisFeb 12, 2025 O109630
I2503045Certificate of AnalysisFeb 12, 2025 O109630
G2401038Certificate of AnalysisJul 09, 2024 O109630
A2329090Certificate of AnalysisFeb 03, 2023 O109630

Show more ⌵

Chemical and Physical Properties
SensitivityAir sensitive
Refractive Index1.503-1.505
Flash Point(°F)235.4℉
Flash Point(°C)113°C
Boil Point(°C)269-270°C
Melt Point(°C)1°C
Molecular Weight178.400 g/mol
XLogP33.300
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count2
Rotatable Bond Count7
Exact Mass178.085 Da
Monoisotopic Mass178.085 Da
Topological Polar Surface Area2.000 Ų
Heavy Atom Count10
Formal Charge0
Complexity47.200
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Xiankun Wu, Haonan Li, Peng Chen, Jiale Zhang, Ming Li, Shujun Zhao, Zhongkai Wang, Zhong Wang.  (2023)  Natural-silk-inspired design provides ultra-tough biobased structural adhesives with supercold tolerance.  Journal of Materials Chemistry A,  11  (12): (6286-6298).  [PMID:] [10.1039/D2TA08016H]
2. Yunfan Xu, Mengdong Guo, Shilong Lu, Zengyue Wei, Shengyu Feng.  (2022)  Synthesis and characterization of novel poly(sulfone siloxane)s with good solubility and recyclability based on siloxane units.  NEW JOURNAL OF CHEMISTRY,  46  (21): (10237-10245).  [PMID:] [10.1039/D2NJ00934J]
3. Wei-Long Xu, Fei Zheng, Jia-Li He, Meng-Qi Zhu, Xiao-Tao Hao.  (2015)  Quantifying phase separation and interfacial area in organic photovoltaic bulk heterojunction processed with solvent additives.  CHEMICAL PHYSICS,      [PMID:] [10.1016/j.chemphys.2015.05.012]
4. Bo Zhao, Yaochen Zheng, Zhulin Weng, Shengying Cai, Chao Gao.  (2015)  The electrophilic effect of thiol groups on thiol–yne thermal click polymerization for hyperbranched polythioether.  Polymer Chemistry,  (20): (3747-3753).  [PMID:] [10.1039/C5PY00307E]
5. Pengfei Chen, Yinyu Zhang, Ping Zhang, Xiuli Zhao, Yeping Wu.  (2024)  Mussel-inspired catechol prepolymers as surface primer for enhanced interface bonding to high-performance thermoplastics.  POLYMER,      [PMID:] [10.1016/j.polymer.2024.127254]
6. Yuwei Pu, Ruiru Liu, Mingjin Li, Xiao Wang, Zhenfu Zhao, Ziyang Hu.  (2025)  Dual-Strategy Engineering: Mg2+ Doping and In Situ Liquid Ligand Passivation for High-Performance Pure Red Perovskite LEDs.  Advanced Optical Materials,      [PMID:] [10.1002/adom.202501902]
7. Yujie Xie, Yeping Wu, Xiuli Zhao, Gaoming Li, Ping Zhang, Yinyu Zhang.  (2026)  Synergistic enhancement of PEEK bonding performance and thermal shock resistance through combined surface treatment.  CHEMICAL ENGINEERING SCIENCE,      [PMID:] [10.1016/j.ces.2026.123397]
Solution Calculators
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