Determine the necessary mass, volume, or concentration for preparing a solution.
AR AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Room temperature,Argon charged,Desiccated 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 71 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Potassium phosphate tribasic is a reagent with a very high buffering capacity. It is widely used in molecular biology, biochemistry, and chromatography, used for the extraction of keratohyalin protein from bovine tissue, to study the effects of freezing and thawing on the stability of proteins sensitive to conformational changes. It is used as a food additive for its properties as an emulsifier, foaming agent, and whipping agent.
| Sorrisi canonici | [O-]P(=O)([O-])[O-].[K+].[K+].[K+] |
|---|---|
| IUPAC Name | tripotassium;phosphate |
| InChIKey | LWIHDJKSTIGBAC-UHFFFAOYSA-K |
| INCHI | 1S/3K.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3 |
| Isomeri SMILES | [O-]P(=O)([O-])[O-].[K+].[K+].[K+] |
| CAS alternativo | 115281-28-2 |
| Peso molecolare | 212.27 |
| Reaxy-Rn | 11343346 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11343346&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 | Inorganic compounds |
|---|---|
| Superclass | Mixed metal/non-metal compounds |
| Classe | Alkali metal oxoanionic compounds |
| Subclass | Alkali metal phosphates |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Alkali metal phosphates |
| Alternative Parents | Inorganic salts Inorganic oxides |
| Molecular Framework | Not available |
| Substituents | Alkali metal phosphate - Inorganic oxide - Inorganic salt |
| Descrizione | This compound belongs to the class of inorganic compounds known as alkali metal phosphates. These are inorganic compounds in which the largest oxoanion is phosphate, and in which the heaviest atom not in an oxoanion is an alkali 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 | Data | Oggetto |
|---|---|---|---|
| Certificate of Analysis | May 06, 2026 | P104107 | |
| Certificate of Analysis | May 06, 2026 | P104107 | |
| Certificate of Analysis | Dec 31, 2025 | P104107 | |
| Certificate of Analysis | Jun 19, 2025 | P104107 | |
| Certificate of Analysis | Jun 19, 2025 | P104107 | |
| Certificate of Analysis | Jun 19, 2025 | P104107 | |
| Certificate of Analysis | Nov 29, 2024 | P104107 | |
| Certificate of Analysis | Nov 29, 2024 | P104107 | |
| Certificate of Analysis | May 27, 2024 | P104107 | |
| Certificate of Analysis | May 27, 2024 | P104107 | |
| Certificate of Analysis | May 27, 2024 | P104107 | |
| Certificate of Analysis | Sep 01, 2022 | P104107 | |
| Certificate of Analysis | Sep 01, 2022 | P104107 | |
| Certificate of Analysis | Sep 01, 2022 | P104107 | |
| Certificate of Analysis | Sep 01, 2022 | P104107 | |
| Certificate of Analysis | Jul 29, 2022 | P104107 | |
| Certificate of Analysis | Jul 29, 2022 | P104107 |
| Solubilità | Soluble in water (100 mg/mL). Insoluble in alcohol. |
|---|---|
| Sensibilità | moisture sensitive |
| Peso molecolare | 212.266 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 0 |
| Exact Mass | 211.845 Da |
| Monoisotopic Mass | 211.845 Da |
| Topological Polar Surface Area | 86.300 Ų |
| Heavy Atom Count | 8 |
| Formal Charge | 0 |
| Complexity | 36.800 |
| 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 | 4 |
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