C3434

Sodium citrate tribasic dihydrate

BioXtra, ≥99.0% (titration)

• 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/REAXYS Number: 6104939
• EC Number: 200-675-3
• MDL number: MFCD00150031
• UNSPSC Code: 12161700
• PubChem Substance ID: 24892616

Properties

• product line: BioXtra
• Quality Level: 200
• assay: ≥99.0% (titration)
• form: powder or crystals
• impurities: Insoluble matter, passes filter test
• pH: 7.5-9.0 (20 °C, 0.1 M in H₂O)
• mp: >300 °C (lit.)
• solubility: H₂O: 0.1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Al: ≤0.0005%; As: ≤0.00001%; Ba: ≤0.0005%; Bi: ≤0.0005%; Ca: ≤0.005%; Cd: ≤0.0005%; Co: ≤0.0005%; Cr: ≤0.0005%; Cu: ≤0.0005%; Fe: ≤0.0005%; K: ≤0.01%; Li: ≤0.0005%; Mg: ≤0.0005%; Mn: ≤0.0005%; Mo: ≤0.0005%; NH₄⁺: ≤0.001%; Ni: ≤0.0005%; Pb: ≤0.0005%; Zn: ≤0.0005%
• absorption: ≤0.010 at 260 in H₂O at 0.1 M; ≤0.010 at 280
• 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

Biochem/physiol Actions

Sodium citrate can act as a buffering agent, resisting changes in pH. Used in blood collection tubes, the citrate chelates calcium ions in blood and thereby disrupts blood clotting. Citrate is a intermediate in the TCA cycle and fatty acid synthesis. Citrate is an allosteric modulator of acetyl-CoA carboxylase, the enzyme that regulates the conversion of acetyl-CoA to malonyl-CoA.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)