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ChemicalBook >> CAS DataBase List >>Sodium rhodizonate

Sodium rhodizonate

CAS No.
523-21-7
Chemical Name:
Sodium rhodizonate
Synonyms
RHODIZONIC ACID DISODIUM SALT;3,4,5,6-TETRAOXOCYCLOHEXENE-1,2-DIOL DISODIUM SALT;DISODIUM RHODIZONATE;RHODIZONIC ACID SODIUM SALT;Sodium roseate;Sodium rhodizote;Sodiumrhodizmate;Sodium roselonate;SODIUM RHODIZONATE;SodiumRhodizonateGr
CBNumber:
CB3134496
Molecular Formula:
C6Na2O6
Molecular Weight:
214.04
MDL Number:
MFCD00001650
MOL File:
523-21-7.mol
MSDS File:
SDS
Last updated:2025-07-04 15:13:46

Sodium rhodizonate Properties

Melting point 300 °C
bulk density 620kg/m3
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.
InChI InChI=1S/C6H2O6.2Na/c7-1-2(8)4(10)6(12)5(11)3(1)9;;/h7-8H;;/q;2*+1/p-2
InChIKey SXWPCWBFJXDMAI-UHFFFAOYSA-L
SMILES C1(=O)C(=O)C(=C([O-])C(=O)C1=O)[O-].[Na+].[Na+]
CAS DataBase Reference 523-21-7(CAS DataBase Reference)
FDA UNII 9QF0329L3G
UNSPSC Code 12352107
NACRES NA.22

SAFETY

Risk and Safety Statements

Safety Statements  24/25
WGK Germany  3
HS Code  29144090
NFPA 704
1
1 0

Sodium rhodizonate price More Price(16)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich R1609 Sodium rhodizonate dibasic 97% 523-21-7 5g $48.7 2024-03-01 Buy
Sigma-Aldrich 1.06595 Rhodizonic acid disodium salt indicator for sulfate titration 523-21-7 5G $225 2024-03-01 Buy
TCI Chemical R0019 Disodium Rhodizonate >90.0%(T) 523-21-7 1g $43 2025-07-31 Buy
TCI Chemical R0019 Disodium Rhodizonate >90.0%(T) 523-21-7 25g $433 2025-07-31 Buy
Usbiological 289332 Sodium rhodizonate dibasic 523-21-7 25g $305 2021-12-16 Buy
Product number Packaging Price Buy
R1609 5g $48.7 Buy
1.06595 5G $225 Buy
R0019 1g $43 Buy
R0019 25g $433 Buy
289332 25g $305 Buy

Sodium rhodizonate Chemical Properties,Uses,Production

Chemical Properties

dark green powder

Uses

Sodium rhodizonate dibasic can be employed as a reactant in the synthesis of:

  • Dihydroxyquinone carbonate by cyclocondensation reaction with phosgene.
  • Zwitterionic systems by condensation of heteroaryl-boronic acids.

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

Raw materials

Preparation Products

Global( 291)Suppliers
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Hebei Chuanghai Biotechnology Co., Ltd 		+8617732866630 abby@chuanghaibio.com China 8773 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-13131129325 sales1@chuanghaibio.com China 5251 58
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21622 55
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Tangshan Moneide Trading Co., Ltd. 		+86-315-8309571 +8615633399667 sales@moneidechem.com China 574 58
Richest Group Ltd 		18017061086 oled@richest-group.com CHINA 5600 58

View Lastest Price from Sodium rhodizonate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Sodium rhodizonate pictures 2025-08-14 Sodium rhodizonate
523-21-7
 US $0.00 / kg 1kg 99%min 100kg WUHAN FORTUNA CHEMICAL CO., LTD
Sodium rhodizonate pictures 2025-06-24 Sodium rhodizonate
523-21-7
 US $0.00-0.00 / KG 1KG 99% 20 mt Hebei Chuanghai Biotechnology Co., Ltd
Sodium Rhodizonate pictures 2025-05-26 Sodium Rhodizonate
523-21-7
 US $10.70 / KG 10KG 99% 10000kg Hebei Chuanghai Biotechnology Co,.LTD
5,6-DIHYDROXY-5-CYCLOHEXENE-1,2,3,4-TETRONE DISODIUM SALT 1,2-DIHYDROXY-3,4,5,6-TETRAOXO-1-CYCLOHEXENE DISODIUM SALT RHODIZONIC ACID, DISODIUM DERIVATIVE SODIUM RHODIZONATE SODIUM RHODIZONATE DIBASIC 2,3,4-tetrone,5,6-dihydroxy-5-cyclohexene-disodiumsalt 5-Cyclohexene-1,2,3,4-tetrone,5,6-dihydroxy-,disodiumsalt 5,6-Di(sodiooxy)-5-cyclohexene-1,2,3,4-tetrone Rhodizonic acid sodium Rhodizonic acid, disodium salt,98% Sodium rhodizonate, indicator for metal titration, reagent grade Sodium rhodizonate dibasic,3,4,5,6-Tetraoxocyclohexene-1,2-diol disodium salt, Rhodizonic acid disodium salt Rhodizonic acid disodium salt p.a. Rhodizonic acid sodi Rhodizonic Acid Disodium Salt Sodium Rhodizonate 3,4,5,6-Tetraoxocyclohexene-1,2-diol Disodium Salt RHODIZONIC ACID DISODIUM SALT INDICATOR SodiuM 3,4,5,6-tetraoxocyclohex-1-ene-1,2-bis(olate) 3,4,5,6-Tetraoxocyclohexene-1,2-diol Disodium Salt Sodium Rhodizonate Disodium Rhodizonate Sodium rhodizote Rhodizonic acid disodium salt indicator for sulfate titration Sodium rhodizonate dibasic 97% Sodiumrhodizmate 1,2-Dihydroxy-3,4,5,6-tetraoxocyclohexene disodium salt disodium 3,4,5,6-tetraoxocyclohex-1-en-1,2-ylene dioxide RHODIZONIC ACID DISODIUM SALT 97% SodiumRhodizonateGr-(RhodizonicAcidSodiumSalt) SodiumRhodizonateGr SODIUM RHODIAZONATE Rhodizonic acid, disodium deriv. 5,6-Bis(sodiooxy)-5-cyclohexene-1,2,3,4-tetrone SODIUM RHODOZINATE extrapure AR 3,4,5,6-Tetraoxocyclohexene-1,2-diol disodium salt, Rhodizonic acid disodium salt Rose Red Sodium test solution(ChP) 5-Cyclohexene-1,2,3,4-tetrone,5,6-dihydroxy-, sodium salt (1:2) Disodium Rhodizonate > Rose Bengal Sodium Test Solution Sodium rhodizonate AR 1GM Sodium rhodizonate AR 5GM Sodium rhodizonate, GR 99%+ 523-21-7 Sodium rhodizonate Sodium Rhodizonate Dibasic extrapure AR, 99% DISODIUM RHODIZONATE 3,4,5,6-TETRAOXOCYCLOHEXENE-1,2-DIOL DISODIUM SALT RHODIZONIC ACID DISODIUM SALT RHODIZONIC ACID SODIUM SALT Rose Red sodium test solution Sodium rhodizonate,Rhodizonic acid,disodium salt Sodium roselonate Rhodizonic acid disodium Sodium roseate Rosolic acid, sodium salt 3,4,5,6-Tetraoxocyclohexene-1,2-diol d 523-21-7 523-31-7 OCCO3CONaCONa C6O6Na2 C6Na2O6 Na2C6O6