S4641

Sodium citrate tribasic dihydrate

ACS reagent, ≥99.0%

• Synonym(s): Citric acid trisodium salt dihydrate, Trisodium citrate dihydrate
• Linear Formula: HOC(COONa)(CH₂COONa)₂ · 2H₂O
• CAS Number: 6132-04-3
• Molecular Weight: 294.10
• Beilstein: 6104939
• EC Number: 200-675-3
• MDL number: MFCD00150031
• UNSPSC Code: 12352100
• PubChem Substance ID: 24899613
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• Agency: suitable for SM 4500 - NH3
• Assay: ≥99.0%
• impurities: ≤0.003% Ammonia (NH₃); ≤0.005% Insoluble matter
• pH: 7.0-9.0 (25 °C, 5% in solution)
• mp: >300 °C (lit.)
• solubility: water: soluble 29.4 g/L at 20 °C (completely)
• anion traces: chloride (Cl^-): ≤0.003%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Ca: ≤0.005%; Fe: ≤5 ppm; heavy metals: ≤5 ppm (by ICP-OES)
• SMILES string: O.O.[Na+].[Na+].[Na+].OC(CC([O-])=O)(CC([O-])=O)C([O-])=O
• InChI: 1S/C6H8O7.3Na.2H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;2*1H2/q;3*+1;;/p-3
• InChI key: NLJMYIDDQXHKNR-UHFFFAOYSA-K

Description

Application

Sodium citrate tribasic dihydrate can be used as a catalyst to synthesize:     

• Fused O- and N-heterocyclic derivatives via multicomponent Knoevenagel-cyclocondensation of isatin/aldehyde/ acenaphthylene-1,2-dione, malononitrile, and various C−H activated acids.     
• Chromeno[3′,4′:5,6]pyrano[2,3-d]pyrimidines by the condensation reaction of 4-hydroxycoumarin, aromatic aldehydes, and barbituric acid/thiobarbituric acid.

It can also be used as:      
A reducing agent to synthesize metal nanoparticles via sol-gel method using corresponding metal salt precursors.    
A controlling agent in the synthesis of single-crystal of coordination polymer [Co(H₂O)₂Ni(CN)₄ 4H₂O].

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves