Determine the necessary mass, volume, or concentration for preparing a solution.
≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Room temperature,Argon charged,Cool Ships Normal Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 7 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
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.
| Canonical Smiles | C(CCCCS)CCCS |
|---|---|
| IUPAC Name | octane-1,8-dithiol |
| InChIKey | PGTWZHXOSWQKCY-UHFFFAOYSA-N |
| INCHI | 1S/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= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organosulfur compounds |
| Class | Thiols |
| Subclass | Alkylthiols |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Alkylthiols |
| Alternative Parents | Hydrocarbon derivatives |
| Molecular Framework | Aliphatic acyclic compounds |
| Substituents | Alkylthiol - Hydrocarbon derivative - Aliphatic acyclic compound |
| Description | This 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 |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | May 27, 2026 | O109630 | |
| Certificate of Analysis | May 27, 2026 | O109630 | |
| Certificate of Analysis | May 27, 2026 | O109630 | |
| Certificate of Analysis | May 27, 2026 | O109630 | |
| Certificate of Analysis | Jan 05, 2026 | O109630 | |
| Certificate of Analysis | Jan 05, 2026 | O109630 | |
| Certificate of Analysis | Oct 09, 2025 | O109630 | |
| Certificate of Analysis | Oct 09, 2025 | O109630 | |
| Certificate of Analysis | Sep 24, 2025 | O109630 | |
| Certificate of Analysis | Feb 12, 2025 | O109630 | |
| Certificate of Analysis | Feb 12, 2025 | O109630 | |
| Certificate of Analysis | Feb 12, 2025 | O109630 | |
| Certificate of Analysis | Feb 12, 2025 | O109630 | |
| Certificate of Analysis | Feb 12, 2025 | O109630 | |
| Certificate of Analysis | Jul 09, 2024 | O109630 | |
| Certificate of Analysis | Feb 03, 2023 | O109630 |
| Sensitivity | Air sensitive |
|---|---|
| Refractive Index | 1.503-1.505 |
| Flash Point(°F) | 235.4℉ |
| Flash Point(°C) | 113°C |
| Boil Point(°C) | 269-270°C |
| Melt Point(°C) | 1°C |
| Molecular Weight | 178.400 g/mol |
| XLogP3 | 3.300 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 7 |
| Exact Mass | 178.085 Da |
| Monoisotopic Mass | 178.085 Da |
| Topological Polar Surface Area | 2.000 Ų |
| Heavy Atom Count | 10 |
| Formal Charge | 0 |
| Complexity | 47.200 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 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, 6 (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] |