1.06448

Sodium citrate, dihydrate

for analysis EMSURE^® ACS,ISO,Reag. Ph Eur

• Synonym(s): Sodium citrate tribasic dihydrate, Trisodium Citrate, Sodium Citrate, 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: 12352107
• EC Index Number: 200-675-3
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 300
• agency: reag. ISO; reag. Ph. Eur.
• product line: EMSURE^®
• assay: 99.0-101.0% (perchloric acid titration); 99.0-101.0% anhydrous basis (perchloric acid titration)
• form: solid
• potency: >8000 mg/kg LD₅₀, oral (Rat)
• composition: Water, 11-13%
• impurities: ≤0.005% Insoluble matter
• pH: 7.5-9.0 (25 °C, 50 g/L in H₂O)
• mp: 150 °C (anhydrous substance); >300 °C (lit.)
• bulk density: 600 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%; oxalate (C₂O₄^2-): ≤0.0300%; phosphate (PO₄^3-): ≤0.002%; sulfate (SO₄^2-): ≤0.004%
• cation traces: Ca: ≤0.005%; Fe: ≤0.0005%; N: ≤0.001%; NH₄⁺: ≤0.003%; heavy metals: ≤0.0005%; heavy metals (as Pb): ≤0.0005%
• storage temp.: 2-30°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

Linkage

Replaces: SX0445; SX0445-1; SX0445-3; SX0445-5; SX0445-20

Analysis Note

Assay (perchloric acid titration): 99.0 - 101.0 %
Assay (Perchloric acid titration, calc. on anhydrous substance): 99.0 - 101.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water; 25 °C): 7.5 - 9.0
Acidity or alkalinity: passes test
Chloride (Cl): ≤ 0.001 %
Oxalate (C₂O₄): ≤ 0.0300 %
Phosphate (PO₄): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.004 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (ACS): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
NH₃ (Ammonia): ≤ 0.003 %
Readily carbonisable substance: passes test
Water: 11.0 - 13.0 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE 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