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Name

Croconic acid disodium salt

EINECS

N/A

CAS No.

14379-00-1

Density

g/cm³

PSA

97.33000

LogP

-1.22010

Solubility

N/A

Melting Point

>300 °C(lit.)

Formula

C5H2 O5 . 2 Na

Boiling Point

°Cat760mmHg

Molecular Weight

186.032

Flash Point

°C

Transport Information

N/A

Appearance

N/A

Safety

Safety Statements	22-24/25
WGK Germany	3

Risk Codes

N/A

Molecular Structure

Hazard Symbols

N/A

Synonyms

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-, disodium salt (8CI,9CI); Croconic acid, disodium deriv. (6CI);Sodium, [(3,4,5-trioxo-1-cyclopenten-1,2-ylene)dioxy]di- (7CI); Croconic aciddisodium salt; Disodium croconate; Sodium croconate

Article Data

Croconic acid disodium salt Synthetic route

: 118-76-3
rhodizonic acid

: 14379-00-1
croconic acid disodium salt

Conditions

Conditions	Yield
With sodium hydroxide

: 488-86-8
croconic acid

: 1310-73-2
sodium hydroxide

: 14379-00-1
croconic acid disodium salt

Conditions

Conditions	Yield
In water for 12h;

: 488-86-8
croconic acid

: 14379-00-1
croconic acid disodium salt

Conditions

Conditions	Yield
With sodium hydroxide In water

: 313674-46-3
1,8-bis(trans-Pt(PEt3)2NO3)anthracene

: 14379-00-1
croconic acid disodium salt

: 7732-18-5
water

: cyclobis[(1,8-bis[trans-Pt(PEt3)2]anthracene)(μ-1,2-C5O5)]*2H2O

Conditions

Conditions	Yield
In water; acetone to an acetone soln. of Pt-complex an aq. soln. of disodium salt of acid was added drop by drop with continuous stirring (15 min); ppt. was filtered, washed with acetone and water; elem. anal.;	97.8%

: 531500-32-0
3,6-bis[trans-Pt(PEt3)2(NO3)2]phenanthrene

: 14379-00-1
croconic acid disodium salt

: 67-64-1
acetone

: cyclobis[(2,9-bis[trans-Pt(PEt3)2]phenanthrene)(μ-1,3-C5O5)]*4CH3COCH3

Conditions

Conditions	Yield
In water; acetone an aq. soln. of disodium salt of acid was added to an acetone-soln. of complex (1:1 stoichiometric ratio) at room temp.; elem. anal.;	90.1%

: copper(II) perchlorate hexahydrate

: 14379-00-1
croconic acid disodium salt

: 7732-18-5
water

: 1539-42-0
bis[(2-pyridyl)methyl]amine

: [dicopper(II)(bis(2-pyridylmethyl)amine)2(μ1,1,2,3-croconate)(H2O)]2(perchlorate)4*2H2O

Conditions

Conditions	Yield
In water Na2C5O5 added to hot soln. of Cu salt and C12H12N3 (in equimolar amts.) in H2O, heated for 15 min on a steam-bath; filtered (celite), crystd. at room temp. for 1 wk, filtered off, washed (propan-2-ol, ether), dried in air; elem. anal.;	89%

: copper(II) perchlorate hexahydrate

: 14379-00-1
croconic acid disodium salt

: 80049-12-3
tris[2-(1-pyrazolyl)ethyl]amine

: [dicopper(II)(tris[2-ethyl(1-pyrazolyl)]amine)2(μ-4,5-dihydroxycyclopent-4-ene-1,2,3-trionate(-2H))](perchlorate)2

Conditions

Conditions	Yield
In methanol; water Na2(C5O5) (0.25 mmol) aq. soln. added dropwise to soln. of CuClO4*6H2O (0.50 mmol) and tepza (0.50 mmol) (H2O/MeOH 1:1), heated on steam-bath for 10 min; filtered, crystd. at room temp. over 1 d, ppt. filtered off, washed with2-propanol and ether, air dried; elem. anal.;	88%

: tetrakis(thiourea)platinum(II) dichloride

: 14379-00-1
croconic acid disodium salt

: 7732-18-5
water

: tetrakis(thiourea)platinum(II) crotonate - water (1/2.5)

Conditions

Conditions	Yield
In water Pt complex in H2O mixed with Na2C5O5 in H2O; crystd. at room temp. for 4 d, elem. anal.;	78.2%

: 553-26-4
4,4'-bipyridine

: cadmium(II) nitrate tetrhydrate

: 14379-00-1
croconic acid disodium salt

: ([Cd2(croconate)2(4,4'-bipyridine)(H2O)]*(H2O)).infin.

Conditions

Conditions	Yield
In water High Pressure; react. Cd(NO3)2*4H2O, Na2C5O5, 4,4'-bpy, and water (2:2:2:1:3333) at 180°C for 3 days;	78%
In water High Pressure; react. Cd(NO3)2*4H2O, Na2C5O5, 4,4'-bpy, and water (2:2:1:3333) at 180°C for 3 days;	75%
In water High Pressure; react. Cd(NO3)2*4H2O, Na2C5O5, 4,4'-bpy, and water (1:1:1:3333) at 180°C for 3 days; elem. anal.;	36.29%

: copper(II) perchlorate hexahydrate

: 105-83-9
3,3'-Diamino-N-methyldipropylamine

: 14379-00-1
croconic acid disodium salt

: [Cu2(Medpt)2(C5O5)](ClO4)2*H2O

Conditions

Conditions	Yield
With water Heating;	77%

Croconic acid disodium salt Chemical Properties

Molecular Structure of Croconic acid disodium salt (CAS NO.14379-00-1):

Systematic Name: (3,4,5-Trioxo-2-sodiooxy-1-cyclopentenyl)oxysodium
Molecular Formula: C₅Na₂O₅
Molecular Weight: 186.03
CAS Registry Number: 14379-00-1
H bond acceptors: 5
H bond donors: 0
Freely Rotating Bonds: 4
Nominal Mass: 186
Average Mass: 186.03
Monoisotopic Mass: 185.954113
Melting Point: >300 °C(lit.)
SMILES: [Na]O\C1=C(/O[Na])C(=O)C(=O)C1=O
InChI: InChI=1/C5H2O5.2Na/c6-1-2(7)4(9)5(10)3(1)8;;/h6-7H;;/q;2*+1/p-2
InChIKey: OQXLFPHHAAAVKQ-NUQVWONBAW

Croconic acid disodium salt Safety Profile

Safety Information of Croconic acid disodium salt (CAS NO.14379-00-1):
Safety Statements: 22-24/25
S22:Do not breathe dust.
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3

Croconic acid disodium salt Specification

Croconic acid disodium salt (CAS NO.14379-00-1), its Synonyms are 4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-, sodium salt (1:2) ; 4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-, disodium salt (8CI,9CI) ; Croconic acid, disodium deriv. (6CI) ; Sodium, [(3,4,5-trioxo-1-cyclopenten-1,2-ylene)dioxy]di- (7CI) ; Disodium croconate ; Sodium croconate .

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