Sodium citrate tribasic dihydrate

grade

ACS reagent
puriss. p.a.

Quality Level

200

Assay

≥99.0% (NT)

form

powder

impurities

11-13% water (KFT)

pH

7.0-9.0 (25 °C, 50 mg/mL in H₂O)

mp

>300 °C (lit.)

solubility

water: soluble 29.4 g/L at 20 °C

anion traces

chloride (Cl^-): ≤10 mg/kg
sulfate (SO₄^2-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤100 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
NH₄⁺: ≤10 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
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