567446

Sodium citrate, dihydrate

Molecular Biology Grade

• Synonym(s): Sodium citrate tribasic dihydrate, 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
• MDL number: MFCD00150031
• UNSPSC Code: 12161703
• NACRES: NA.25

Properties

• grade: Molecular Biology
• Quality Level: 100
• assay: ≥99% (titration)
• form: crystalline solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze
• color: white
• pKa (20 °C): 6.40
• mp: >300 °C (lit.)
• solubility: water: 100 mg/mL
• cation traces: heavy metals: ≤0.001%; heavy metals (as Pb): ≤0.001%
• absorption: ≤0.015 at 260 nm; ≤0.015 at 280 nm
• foreign activity: DNases, proteases, RNases, none detected
• shipped in: ambient
• storage temp.: 15-25°C
• 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

General description

Widely used buffer in amino acid analysis.

Application

• Study on the preparation of ascorbic acid reduced ultrafine copper powders in the presence of different protectants and the properties of copper powders based on methionine protection.: This research utilizes sodium citrate dihydrate as a protective agent in the synthesis of ultrafine copper powders, enhancing their stability and properties for potential applications in catalysis and electronics (Ke X et al., 2024).


• Optimization of micro-QuEChERS extraction coupled with gas chromatography-mass spectrometry for the fast determination of phthalic acid esters in mussel samples.: Sodium citrate dihydrate is employed in the extraction process for the detection of phthalic acid esters in mussels, demonstrating its effectiveness in analytical chemistry and environmental monitoring (Carro N et al., 2023).


• New butanolide derivatives from the marine derived fungus Aspergillus terreus GZU-31-1 by chemical epigenetic manipulation.: This study highlights the role of sodium citrate dihydrate in the isolation and characterization of new bioactive compounds from marine fungi, contributing to natural product research and drug discovery (Zhou Y et al., 2024).


• PEGylated Gold Nanoparticles Grafted with N-Acetyl-L-Cysteine for Polymer Modification.: Sodium citrate dihydrate is used as a reducing agent in the synthesis of PEGylated gold nanoparticles, which are then applied for polymer modification, highlighting its applications in nanotechnology and materials science (Fajstavr D et al., 2021).


• Characterization of sodium tripolyphosphate and sodium citrate dehydrate residues on surfaces.: This research focuses on the characterization of residues of sodium citrate dihydrate on surfaces, providing insights into its applications in surface chemistry and industrial cleaning processes (Gurses MS et al., 2018).

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable