磷酸氢二钠十二水合物，Sodium phosphate dibasic dodecahydrate；meets analytical specification of Ph. Eur., BP, E339, 98.5-102.5% (T)

Agency

meets analytical specifications of BP
meets analytical specifications of Ph. Eur.

质量水平

200

测定

98.5-102.5% (T)

形式

crystals

质量

meets analytical specification of Ph. Eur., BP, E339

杂质

reducing matter, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤1.0% NaH₂PO₄
57-61% water (Karl Fischer)

缺失

57-61% loss on drying

pH值（酸碱度）

8.4-9.6 (20 °C, 1%)

痕量阴离子

chloride (Cl^-): ≤10 mg/kg
fluoride (F^-): ≤10 mg/kg
sulfate (SO₄^2-): ≤100 mg/kg

痕量阳离子

As: ≤1 mg/kg
Cd: ≤1 mg/kg
Cu: ≤20 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
K: ≤50 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

适用性

complies for appearance of solution

SMILES string

O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O

InChI

1S/2Na.H3O4P.12H2O/c;;1-5(2,3)4;;;;;;;;;;;;/h;;(H3,1,2,3,4);12*1H2/q2*+1;;;;;;;;;;;;;/p-2

InChI key

DGLRDKLJZLEJCY-UHFFFAOYSA-L