≥90%(C) 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Product introduction
Potassium rhodizonate (3,4,5,6-Tetraoxocyclohexene-1,2-diol dipotassium salt, Rhodizonic acid potassium salt), a benzoquinone derivative, is the potassium salt of rhodizonic acid. Its crystalline structure has been reported and it exhibits space group Fddd. Rhodizonate dianion undergoes various thermal and photochemical reactions with various oxidizing reagents in aqueous solution.
Application
Potassium rhodizonate is suitable reagent for the preparation of staining solution used in the rhodizonate test for the detection of lead. It is suitable reagent used in the preparation of barium, thallium, ammonium and silver salts rhodizonic acid by metathesis in aqueous solution.
It may be used in the following studies:
To cocrystallize plutonium and radium from urine in the plutonium and radium assay of urine.
As a dye in the spectrophotometric determination of sulfate ion.
To determine the acid dissociation constants of rhodizonic acid by pH potentiometric titration of potassium rhodizonate with standardized HCl.
As a staining agent for plagioclase in the petrographic study.
| Pubchem Sid | 488186142 |
|---|---|
| Canonical Smiles | C1(=C(C(=O)C(=O)C(=O)C1=O)[O-])[O-].[K+].[K+] |
| IUPAC Name | dipotassium;3,4,5,6-tetraoxocyclohexene-1,2-diolate |
| InChIKey | NEWIILAQDSMNML-UHFFFAOYSA-L |
| INCHI | 1S/C6H2O6.2K/c7-1-2(8)4(10)6(12)5(11)3(1)9;;/h7-8H;;/q;2*+1/p-2 |
| Isomeric SMILES | C1(=C(C(=O)C(=O)C(=O)C1=O)[O-])[O-].[K+].[K+] |
| WGK Germany | 3 |
| PubChem CID | 83051 |
| Molecular Weight | 246.26 |
| Beilstein | 8535 |
| Reaxy-Rn | 7105528 |
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 | Organic oxygen compounds |
| Class | Organooxygen compounds |
| Subclass | Carbonyl compounds |
| Intermediate Tree Nodes | Ketones - Cyclic ketones - Quinones - Benzoquinones |
| Direct Parent | P-benzoquinones |
| Alternative Parents | O-benzoquinones M-benzoquinones Phenoxides Vinylogous acids Organic potassium salts Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic homomonocyclic compounds |
| Substituents | P-benzoquinone - O-benzoquinone - M-benzoquinone - Phenoxide - Benzenoid - Monocyclic benzene moiety - Vinylogous acid - Organic alkali metal salt - Organic oxide - Hydrocarbon derivative - Organic potassium salt - Organic salt - Aromatic homomonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as p-benzoquinones. These are benzoquinones where the two C=O groups are attached at the 1- and 4-positions, respectively. |
| 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 |
|---|---|---|---|
 C2503411 | Certificate of Analysis | Mar 12, 2025 | P492081 |
| L2212351 | Certificate of Analysis | Dec 19, 2022 | P492081 |
| L2212352 | Certificate of Analysis | Dec 19, 2022 | P492081 |
| L2212402 | Certificate of Analysis | Dec 19, 2022 | P492081 |
| Solubility | Soluble in water |
|---|---|
| Melt Point(°C) | ＞300℃ |
| Molecular Weight | 246.260 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 0 |
| Exact Mass | 245.897 Da |
| Monoisotopic Mass | 245.897 Da |
| Topological Polar Surface Area | 114.000 Ų |
| Heavy Atom Count | 14 |
| Formal Charge | 0 |
| Complexity | 236.000 |
| 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 | 3 |
