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Sodium rhodizonate

Sodium rhodizonate Structure
Sodium rhodizonate
  • CAS No.523-21-7
  • Chemical Name:Sodium rhodizonate
  • CBNumber:CB3134496
  • Molecular Formula:C6Na2O6
  • Formula Weight:214.04
  • MOL File:523-21-7.mol
Sodium rhodizonate Property
  • Melting point: :300 °C
  • storage temp.  :Store at +15°C to +25°C.
  • form  :Fine Crystalline Powder
  • color  :Green-gray to dark green
  • Water Solubility  :Soluble in water.
  • Merck  :14,8670
  • BRN  :5181379
  • Stability: :Stable. Incompatible with strong oxidizing agents.
  • InChIKey :SXWPCWBFJXDMAI-UHFFFAOYSA-L
  • CAS DataBase Reference :523-21-7(CAS DataBase Reference)
  • FDA UNII :9QF0329L3G
Safety
  • Safety Statements  :24/25
  • WGK Germany  :3
  • HS Code  :29144090
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal word
  • Hazard statements
  • Precautionary statements
Sodium rhodizonate Price More Price(8)
  • Brand: Sigma-Aldrich
  • Product number: R1609
  • Product name : Sodium rhodizonate dibasic
  • Purity: 97%
  • Packaging: 5g
  • Price: $39.2
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 1.06595
  • Product name : Rhodizonic acid disodium salt
  • Purity: indicator for sulfate titration
  • Packaging: 5 g
  • Price: $157.25
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 1.06595
  • Product name : Rhodizonic acid disodium salt indicator for sulfate titration. CAS 523-21-7, molar mass 214.04 g/mol., indicator for sulfate titration
  • Purity: 
  • Packaging: 1065950005
  • Price: $165
  • Updated: 2020/08/18
  • Buy: Buy
  • Brand: TCI Chemical
  • Product number: R0019
  • Product name : Disodium Rhodizonate
  • Purity: >90.0%(T)
  • Packaging: 1g
  • Price: $40
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: TCI Chemical
  • Product number: R0019
  • Product name : Disodium Rhodizonate
  • Purity: >90.0%(T)
  • Packaging: 25g
  • Price: $408
  • Updated: 2021/03/22
  • Buy: Buy

Sodium rhodizonate Chemical Properties,Usage,Production

  • Chemical Properties dark green powder
  • Uses As a reagent for barium and strontium.
  • Purification Methods The free acid is obtained by acidifiying and extracting with Et2O, drying (MgSO4), filtering, evaporating and distilling in a vacuum (b 155-160o/14mm). The free acid solidifies on cooling, and the colourless crystals can be recrystallised from tetrahydrofuran/pet ether or *C6H6. It forms a dihydrate m 130-140o. The pure di Na salt is formed by dissolving the acid in 2 equivalents of NaOH and evaporating in a vacuum. It forms violet crystals which give an orange solution in H2O that is unstable for extended periods even at 0o, and should be prepared freshly before use. Salts of rhodizonic acid cannot be purified by recrystallisation without great loss due to conversion to crotonate, so that the original material must be prepared anew if pure salt is required. It can be washed with NaOAc solution, then EtOH, to remove excess NaOAc, dried under vacuum and stored in the dark. [UV and tautomerism: Schwarzenbach & Suter Helv Chim Acta 24 617 1941, Polarography: Preisler & Berger J Am Chem Soc 64 67 1942, Souchay & Taibouet J Chim Phys 49 C108 1952, Beilstein 8 H 535, 8 II 572, 8 III 4214, 8 IV 3609.]
Sodium rhodizonate Preparation Products And Raw materials
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  • OCCO3CONaCONa
  • C6O6Na2
  • C6Na2O6
  • Na2C6O6
  • C6H6Na2
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