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AR, 30.0-32.0% AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 16 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
High-silic fluoro silicic acids have been prepared. They have desired amount of extra silica upto 18% more than the composition as represented by H2SiF6. Preparation and properties of fluosilicic acid have been reported. Fluosilicic acid can be obtained as a major byproduct of phosphate fertilizer industry.It can be used in the preparation of sodium fluorosilicate, via neutralization with sodium chloride. It can also undergo neutralization with ammonia to produce ammonium fluoride and silica.
| Canonical Smiles | [H+].[H+].F[Si-2](F)(F)(F)(F)F |
|---|---|
| IUPAC Name | hexafluorosilicon(2-);hydron |
| InChIKey | OHORFAFFMDIQRR-UHFFFAOYSA-P |
| INCHI | 1S/F6Si/c1-7(2,3,4,5)6/q-2/p+2 |
| Isomeric SMILES | [H+].[H+].F[Si-2](F)(F)(F)(F)F |
| WGK Germany | 2 |
| PubChem CID | 21863527 |
| UN Number | 1778 |
| Packing Group | II |
| Molecular Weight | 144.09 |
Comprehensive hazard, handling, storage, and regulatory compliance document.
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View spec sheet →Taxonomy Tree
| Kingdom | Inorganic compounds |
|---|---|
| Superclass | Mixed metal/non-metal compounds |
| Class | Metalloid salts |
| Subclass | Metalloid fluorides |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Metalloid fluorides |
| Alternative Parents | Not available |
| Molecular Framework | Not available |
| Substituents | Metalloid fluoride |
| Description | This compound belongs to the class of inorganic compounds known as metalloid fluorides. These are inorganic compounds in which the largest halogen atom is fluorine, and the heaviest metal atom is a metalloid. |
| 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 | Jun 15, 2026 | F111657 | |
| Certificate of Analysis | Oct 24, 2025 | F111657 | |
| Certificate of Analysis | Oct 24, 2025 | F111657 | |
| Certificate of Analysis | Aug 23, 2025 | F111657 | |
| Certificate of Analysis | Aug 23, 2025 | F111657 | |
| Certificate of Analysis | Jun 22, 2024 | F111657 | |
| Certificate of Analysis | Jun 17, 2024 | F111657 | |
| Certificate of Analysis | Jun 17, 2024 | F111657 | |
| Certificate of Analysis | Jun 17, 2024 | F111657 | |
| Certificate of Analysis | Jun 17, 2024 | F111657 | |
| Certificate of Analysis | Jun 17, 2024 | F111657 | |
| Certificate of Analysis | Mar 16, 2024 | F111657 | |
| Certificate of Analysis | Nov 07, 2023 | F111657 | |
| Certificate of Analysis | Nov 07, 2023 | F111657 | |
| Certificate of Analysis | Oct 11, 2023 | F111657 | |
| Certificate of Analysis | Sep 16, 2023 | F111657 | |
| Certificate of Analysis | Aug 29, 2023 | F111657 | |
| Certificate of Analysis | Jan 11, 2023 | F111657 | |
| Certificate of Analysis | Aug 30, 2022 | F111657 | |
| Certificate of Analysis | Aug 30, 2022 | F111657 | |
| Certificate of Analysis | Jun 14, 2022 | F111657 | |
| Certificate of Analysis | Jun 14, 2022 | F111657 | |
| Certificate of Analysis | Feb 18, 2022 | F111657 | |
| Certificate of Analysis | Feb 18, 2022 | F111657 | |
| Certificate of Analysis | Feb 18, 2022 | F111657 |
| Solubility | Miscible with water. |
|---|---|
| Molecular Weight | 144.091 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 7 |
| Rotatable Bond Count | 0 |
| Exact Mass | 143.983 Da |
| Monoisotopic Mass | 143.983 Da |
| Topological Polar Surface Area | 0.000 Ų |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| Complexity | 62.700 |
| 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 | 3 |
| 1. Wenrui Zhang, Zhaowu Wang, Shiyu Jia, Yayun Zhou, Haipeng Ji. (2023) Millimeter-Sized K2MnF6:Si4+, NH4+ Red-Luminescent Crystals with High Absorption Efficiency (AEmax of 93.5%) and External Quantum Efficiency (EQEmax of 68.9%) Grown by Cooling-Induced Crystallization. INORGANIC CHEMISTRY, [PMID:38115192] [10.1021/acs.inorgchem.3c03844] |
| 2. Binbin He, Yuanzhi Zhu, Yun Zu, Yunxiang Nie, Yi Mei. (2023) Designing an efficient fluorine recovery strategy for Wet-Process phosphoric acid purification by disclosing competitive complexation behavior between fluorine species and metal cations. SEPARATION AND PURIFICATION TECHNOLOGY, [PMID:] [10.1016/j.seppur.2023.124219] |
| 3. Yulin Xu, Wenjing Xiong, Jiaqi Huang, Xinglin Tang, Hongqiang Wang, Wei Liu, Dan Xiao, Yong Guo, Yongzhi Zhang. (2023) Pressure-induced growth of coralloid-like FeF2 nanocrystals to enable high-performance conversion cathode. Journal of Energy Chemistry, [PMID:] [10.1016/j.jechem.2023.01.006] |
| 4. Zirui Zhao, Jiamei Liu, Xifeng Xi, Yulong Wu, Junshe Zhang. (2022) Synthesis of Cellular Silica Using Microbubbles as Templates. Nanomaterials, 12 (16): (2794). [PMID:36014658] [10.3390/nano12162794] |
| 5. Kai Guo, Aizeng Ma, Zijian Wang, Jinzhi Li, Bingfeng Wu, Tong Liu, Dadong Li. (2022) Investigation of n-heptane hydroisomerization over alkali-acid-treated hierarchical Pt/ZSM-22 zeolites. NEW JOURNAL OF CHEMISTRY, 46 (35): (16752-16763). [PMID:] [10.1039/D2NJ02820D] |
| 6. Zhaowu Wang, Haipeng Ji, Zongtao Zhang, Jian Xu, Deliang Chen. (2021) Solution growth of millimeter-scale Na2SiF6 single crystals for Mn4+-doping as red phosphor. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 104 (10): (5077-5085). [PMID:] [10.1111/jace.17739] |
| 7. Hong Ming, Yifei Zhao, Yayun Zhou, Shuai Zhang, Yuanjing Wang, Enhai Song, Zhiguo Xia, Qinyuan Zhang. (2020) A Guanidinium-Based Mn4+-Doped Red-Emitting Hybrid Phosphor with High Stability. ACS Applied Electronic Materials, [PMID:] [10.1021/acsaelm.0c00916] |
| 8. Yayun Zhou, Changkai Yu, Enhai Song, Yuanjing Wang, Hong Ming, Zhiguo Xia, Qinyuan Zhang. (2020) Three Birds with One Stone: K2SiF6:Mn4+ Single Crystal Phosphors for High-Power and Laser-Driven Lighting. Advanced Optical Materials, 8 (23): (2000976). [PMID:] [10.1002/adom.202000976] |
| 9. Fei Tang, Zhicheng Su, Honggang Ye, Shijie Xu, Wang Guo, Yongge Cao, Wenpei Gao, Xiaoqing Pan. (2017) Boosting phonon-induced luminescence in red fluoride phosphors via composition-driven structural transformations. Journal of Materials Chemistry C, 5 (46): (12105-12111). [PMID:] [10.1039/C7TC04695B] |
| 10. Rou-Yu Li, Wenyu Yuan, Shuo Wang, Peng Zhang, Heng Wu, Yi-Min Su, En-Lei Wen, Xiaolin Zhu, Quan-Guo Zhai. (2024) Controllable Regulation of CO2 Adsorption Behavior via Precise Charge Donation Modulation for Highly Selective CO2 Electroreduction to Formic Acid. Small, [PMID:39449203] [10.1002/smll.202408351] |
| 11. Wenrui Zhang, Yayun Zhou, Ce Shi, Jiajun Ren, Liying Zhang, Haipeng Ji. (2024) K2SiF6:Mn4+ red-luminescent crystals with high external quantum efficiency (EQEmax of 78%) and high thermal quenching temperature (T1/2 > 500 K) enabling high brightness warm white LEDs. Journal of Materials Chemistry C, [PMID:] [10.1039/D4TC04035J] |
| 12. Binbin He, Ying Fu, Yun Zu, Yunxiang Nie, Yi Mei. (2024) Simultaneous removal of Al3+, Mg2+ and F- from wet-process phosphoric acid achieved by a co-precipitation strategy. SEPARATION AND PURIFICATION TECHNOLOGY, [PMID:] [10.1016/j.seppur.2024.126855] |
| 13. Haifeng Zhe, Zongqi Chen, Jie Li, Yayun Zhou, Qiang Zhou, Zhengliang Wang. (2025) Thermal-Pressure Induced Phase Transition for Enhanced K2SiF6:Mn4+ Luminescence toward Efficient LEDs. JOURNAL OF ALLOYS AND COMPOUNDS, [PMID:] [10.1016/j.jallcom.2025.182911] |
| 14. Long Yao, Guixuan Shan, Abrar Laiba, Yu Zhao, Yujiao Zhang, Ru’an Chi, Bingwen Long, Wei Li, Jinli Zhang. (2025) Fluoride species conversion-enhanced selective extraction: A green and safe strategy for fluorine recovery in wet-process phosphoric acid production. Journal of Environmental Chemical Engineering, [PMID:] [10.1016/j.jece.2025.119345] |
| 15. Zhaowu Wang, Zhiyu Min, Liping Tian, Wenrui Zhang, Hao Li, Jinlong Chen, Derong Zhu. (2025) Mn⁴⁺-doping-induced structural transformation and luminescence enhancement in bulk (NH₄)₂SiF₆: Mn⁴⁺ crystal grown via cooling crystallization. JOURNAL OF ALLOYS AND COMPOUNDS, [PMID:] [10.1016/j.jallcom.2025.182231] |
| 16. Jinwu Bai, Qing Ke, Yujia Wang, Ran Wang, Xingxing Gu, Xiaolei Ren. (2025) A Comparison Study on the Constructed Polypyrrole Coating and Polypyrrole-Derived Carbon Coating for the Electrochemical Performance of the Iron Difluoride Cathode. LANGMUIR, [PMID:40408549] [10.1021/acs.langmuir.5c00319] |
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