≥99% 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 7 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
| Pubchem Sid | 488199106 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488199106 |
| Canonical Smiles | O.Cl[Os](Cl)Cl |
| IUPAC Name | trichloroosmium;hydrate |
| InChIKey | KHHOLOMEVBPRQY-UHFFFAOYSA-K |
| INCHI | 1S/3ClH.H2O.Os/h3*1H;1H2;/q;;;;+3/p-3 |
| Isomeric SMILES | O.Cl[Os](Cl)Cl |
| PubChem CID | 16211485 |
| Molecular Weight | 296.59 (anhydrous basis) |
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 | Inorganic compounds |
|---|---|
| Superclass | Mixed metal/non-metal compounds |
| Class | Transition metal salts |
| Subclass | Transition metal chlorides |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Transition metal chlorides |
| Alternative Parents | Inorganic oxides Inorganic chloride salts |
| Molecular Framework | Not available |
| Substituents | Transition metal chloride - Inorganic chloride salt - Inorganic oxide - Inorganic salt |
| Description | This compound belongs to the class of inorganic compounds known as transition metal chlorides. These are inorganic compounds in which the largest halogen atom is Chlorine, and the heaviest metal atom is a transition metal. |
| 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 |
|---|---|---|---|
 H2309149 | Certificate of Analysis | May 20, 2026 | O283086 |
| D2313959 | Certificate of Analysis | Jan 21, 2026 | O283086 |
| D2313980 | Certificate of Analysis | Jan 21, 2026 | O283086 |
| D2313984 | Certificate of Analysis | Jan 21, 2026 | O283086 |
| J2209490 | Certificate of Analysis | Jul 10, 2025 | O283086 |
| J2408470 | Certificate of Analysis | Sep 25, 2024 | O283086 |
| J2408471 | Certificate of Analysis | Sep 25, 2024 | O283086 |
| C2415154 | Certificate of Analysis | Aug 17, 2023 | O283086 |
| H2309143 | Certificate of Analysis | Aug 17, 2023 | O283086 |
| H2309146 | Certificate of Analysis | Aug 17, 2023 | O283086 |
| H2309152 | Certificate of Analysis | Aug 17, 2023 | O283086 |
| H2309162 | Certificate of Analysis | Aug 17, 2023 | O283086 |
| D2313933 | Certificate of Analysis | Feb 06, 2023 | O283086 |
| D2313939 | Certificate of Analysis | Feb 06, 2023 | O283086 |
| J2209489 | Certificate of Analysis | Aug 11, 2022 | O283086 |
| J2209491 | Certificate of Analysis | Aug 11, 2022 | O283086 |
| Sensitivity | Moisture sensitive |
|---|---|
| Melt Point(°C) | >500°C dec. |
| Molecular Weight | 314.600 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 314.879 Da |
| Monoisotopic Mass | 314.879 Da |
| Topological Polar Surface Area | 1.000 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 8.000 |
| 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. Xiaohui Yang, Faling Ling, Xiangrong Zi, Yanwei Wang, Han Zhang, Huijuan Zhang, Miao Zhou, Zaiping Guo, Yu Wang. (2020) Low-Coordinate Step Atoms via Plasma-Assisted Calcinations to Enhance Electrochemical Reduction of Nitrogen to Ammonia. Small, 16 (17): (2000421). [PMID:32227457] [10.1002/smll.202000421] |
| 2. Kui Yin, Shanshan Zhang, Yuyang Sun, Hui Huang, Yafei Cheng, Fan Liao, Mingwang Shao. (2018) Ternary Os-Ag-Si electrocatalysts for hydrogen evolution are more efficient than Os-Au-Si. JOURNAL OF COLLOID AND INTERFACE SCIENCE, [PMID:30590233] [10.1016/j.jcis.2018.12.041] |
| 3. Yafei Cheng, Xing Fan, Fan Liao, Shunkai Lu, Youyong Li, Liangbin Liu, Yanqing Li, Haiping Lin, Mingwang Shao, Shuit-Tong Lee. (2017) Os/Si nanocomposites as excellent hydrogen evolution electrocatalysts with thermodynamically more favorable hydrogen adsorption free energy than platinum. Nano Energy, [PMID:] [10.1016/j.nanoen.2017.07.009] |
| 4. Chang Guo, Xiaobing Hu, Xiao Han, Yong Gao, Tao Zheng, Dazhao Chen, Xueyuan Qiu, Pan Wang, Kengfeng Xu, Yiming Chen, Runtong Zhou, Meng Zong, Jincheng Wang, Zhenhai Xia, Jianhua Hao, Keyu Xie. (2024) Laser Precise Synthesis of Oxidation-Free High-Entropy Alloy Nanoparticle Libraries. Journal of the American Chemical Society, [PMID:38935530] [10.1021/jacs.4c03658] |
| 5. Linqi Shi, Zijian Gao, Lisong Zhong, Pengcheng Zhao, Baoyu Qi, Chunxin Xu, Zhaohui Jin, Liu Yang, Zhongwei Chen. (2025) Synergistic electronic and water microenvironment regulation via metallic heterointerfaces for anion exchange membrane water electrolysis. CHEMICAL ENGINEERING JOURNAL, [PMID:] [10.1016/j.cej.2025.166649] |
| 6. Linqi Shi, Ying Li, Pengcheng Zhao, Lisong Zhong, Yang Zhao, Zhaohui Jin, Zijian Gao, Chunxin Xu, Baoyu Qi, Liu Yanga, Zhongwei Chen. (2025) Electronic Modulation of Inverse Catalysts Tailors Adsorption Energetics and Local Environment for Enhanced Alkaline Hydrogen Evolution Reaction. APPLIED CATALYSIS B-ENVIRONMENTAL, [PMID:] [10.1016/j.apcatb.2025.126014] |
| 7. Qian Yajie, Sun Yanzhuo, Xu Jianqiao, Gao Pin, Xue Gang, Zhou Xuefei, Zhang Yalei, Chen Jiabin. (2026) Hydrated metal charge density as a universal descriptor explaining mechanistic variations in periodate activation toward pollutant degradation. Nature Communications, [PMID:41680171] [10.1038/s41467-026-69496-9] |
