磷酸钠 二元 十二水合物

200

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

98.5-102.5% (T)

crystals

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

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

57-61% loss on drying

8.4-9.6 (20 °C, 1%)

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

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

complies for appearance of solution

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

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

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