≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Room temperature 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 4 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Potassium stearate has greasy hand, no sand feeling and fat smell. It can be dissolved in hot water or alcohol, and slowly dissolved in cold water. The aqueous solution is strongly alkaline to litmus and phenolphthalein, but the ethanol solution is only slightly alkaline to phenolphthalein. The solution is alkaline due to hydrolysis.
| Canonical Smiles | CCCCCCCCCCCCCCCCCC(=O)[O-].[K+] |
|---|---|
| IUPAC Name | potassium;octadecanoate |
| InChIKey | ANBFRLKBEIFNQU-UHFFFAOYSA-M |
| INCHI | 1S/C18H36O2.K/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2-17H2,1H3,(H,19,20);/q;+1/p-1 |
| Isomeric SMILES | CCCCCCCCCCCCCCCCCC(=O)[O-].[K+] |
| Molecular Weight | 322.57 |
| Reaxy-Rn | 3919487 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3919487&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 | Lipids and lipid-like molecules |
| Class | Fatty Acyls |
| Subclass | Fatty acids and conjugates |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Long-chain fatty acids |
| Alternative Parents | Carboxylic acid salts Monocarboxylic acids and derivatives Carboxylic acids Organic potassium salts Organic oxides Hydrocarbon derivatives Carbonyl compounds |
| Molecular Framework | Aliphatic acyclic compounds |
| Substituents | Long-chain fatty acid - Carboxylic acid salt - Organic alkali metal salt - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organic potassium salt - Organic salt - Organooxygen compound - Carbonyl group - Aliphatic acyclic compound |
| Description | This compound belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. |
| 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 |
|---|---|---|---|
 B2628156 | Certificate of Analysis | Mar 11, 2026 | P305561 |
| J2112656 | Certificate of Analysis | Jul 10, 2025 | P305561 |
| J2112657 | Certificate of Analysis | Jul 10, 2025 | P305561 |
| J2112667 | Certificate of Analysis | Jul 10, 2025 | P305561 |
| Sensitivity | Moisture sensitive. |
|---|---|
| Molecular Weight | 322.600 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 16 |
| Exact Mass | 322.227 Da |
| Monoisotopic Mass | 322.227 Da |
| Topological Polar Surface Area | 40.100 Ų |
| Heavy Atom Count | 21 |
| Formal Charge | 0 |
| Complexity | 207.000 |
| 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 | 2 |
| 1. Feng Long, Xiaolei Zhang, Xincheng Cao, Qiaolong Zhai, Yaoguang Song, Fei Wang, Jianchun Jiang, Junming Xu. (2019) Mechanism investigation on the formation of olefins and paraffin from the thermochemical catalytic conversion of triglycerides catalyzed by alkali metal catalysts. FUEL PROCESSING TECHNOLOGY, [PMID:] [10.1016/j.fuproc.2019.106312] |
| 2. Jiazhi Chen, Yuan Li, Xiaotian Chen, Yuliang Mai, Minjie Gao, Junjie Zhang, Xi Wang. (2019) Efficient Solvent-Free Synthesis of Sucrose Esters via Sand-Milling Pretreatment on Solid–Liquid Mixtures. JOURNAL OF SURFACTANTS AND DETERGENTS, 22 (6): (1515-1520). [PMID:] [10.1002/jsde.12314] |
| 3. Hongmei Jian, Jiangsheng Li, Min Zhao, Hongna Zhang, Ling He, Guohong Tao, Tonggang Jiu. (2018) The influence of ionic radius of interfacial molecule on device performances of polymer solar cells. SOLAR ENERGY, [PMID:] [10.1016/j.solener.2018.06.029] |
| 4. Luo He-Ming, Chen Hui, Chen Yan-Zheng, Li Ping, Zhang Jian-Qiang, Zhao Xia. (2016) Simple synthesis of porous carbon materials for high-performance supercapacitors. JOURNAL OF APPLIED ELECTROCHEMISTRY, 46 (6): (703-712). [PMID:] [10.1007/s10800-016-0958-9] |
