392340
Potassium rhodizonate
technical grade, 85%
Synonym(s):
3,4,5,6-Tetraoxocyclohexene-1,2-diol dipotassium salt, Rhodizonic acid potassium salt
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About This Item
Linear Formula:
C6O6K2
CAS Number:
Molecular Weight:
246.26
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22
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grade
technical grade
assay
85%
form
powder
mp
>300 °C (lit.)
SMILES string
[K+].[K+].[O-]C1=C([O-])C(=O)C(=O)C(=O)C1=O
InChI
1S/C6H2O6.2K/c7-1-2(8)4(10)6(12)5(11)3(1)9;;/h7-8H;;/q;2*+1/p-2
InChI key
NEWIILAQDSMNML-UHFFFAOYSA-L
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General description
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.[1] Rhodizonate dianion undergoes various thermal and photochemical reactions with various oxidizing reagents in aqueous solution.[2]
Application
Potassium rhodizonate is suitable reagent for the preparation of staining solution used in the rhodizonate test for the detection of lead.[3] It is suitable reagent used in the preparation of barium, thallium, ammonium and silver salts rhodizonic acid by metathesis in aqueous solution.[2]
It may be used in the following studies:
It may be used in the following studies:
- To cocrystallize plutonium and radium from urine in the plutonium and radium assay of urine.[4][5]
- As a dye in the spectrophotometric determination of sulfate ion.[6]
- To determine the acid dissociation constants of rhodizonic acid by pH potentiometric titration of potassium rhodizonate with standardized HCl.[7]
- As a staining agent for plagioclase in the petrographic study.[8]
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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A Jurkiewicz et al.
Protoplasma, 218(3-4), 117-124 (2002-01-05)
The metal distribution within mycorrhizal and nonmycorrhizal roots of Epipactis atrorubens collected from zinc mine tailings and an area rich in heavy metal ores (both located in southern Poland) was investigated. The tailings, consisting of post-flotation material, were characterised by
Statistical analysis of titration data.
Schwartz LM and Gelb RI.
Analytical Chemistry, 50(11), 1571-1576 (1978)
Resonance Raman spectroscopy of rhodizonates: Evidence of low-energy transitions in the solid state.
Goncalves NS and Santos PS.
Journal of Raman Spectroscopy, 26(5), 363-372 (1995)
Daniele Gibelli et al.
Journal of forensic sciences, 55(4), 1092-1097 (2010-04-14)
Very little literature exists on gunshot wounds on decomposed material. In this study, seven pig heads underwent a shooting test. Entrance wounds from the first head underwent neutron activation analysis (NAA) and histological testing immediately after the firing test; the
Radiochemical determination of plutonium in urine.
Weiss HV and Shipman WH.
Analytical Chemistry, 33(1), 37-39 (1961)
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