柠檬酸三钠二水合物，Sodium citrate tribasic dihydrate；ACS reagent, ≥99.0%

等级

ACS reagent

质量水平

200

测定

≥99.0%

杂质

≤0.003% Ammonia (NH₃)
≤0.005% Insoluble matter

pH值（酸碱度）

7.0-9.0 (25 °C, 5% in solution)

mp

>300 °C (lit.)

溶解性

water: soluble 29.4 g/L at 20 °C (completely)

痕量阴离子

chloride (Cl^-): ≤0.003%
sulfate (SO₄^2-): ≤0.005%

痕量阳离子

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