硫代硫酸钠五水合物，Sodium thiosulfate pentahydrate；puriss., meets analytical specification of Ph. Eur., BP, USP, 99.0-100.5% (USP, dry basis)

等级

puriss.

质量水平

200

测定

99.0-100.5% (USP, dry basis)
99.0-101.0% (EP)

形式

crystalline

质量

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

杂质

residual solvents, complies
≤0.0005% heavy metals (as Pb)

缺失

32-37% loss on drying, 16 h (vacuum)

pH值（酸碱度）

6.0-8.4 (20 °C, 10%)

痕量阴离子

sulfate, sulfite (as SO₄^2-): ≤2000 mg/kg
sulfide (S^2-): in accordance

痕量阳离子

As: ≤3 mg/kg
Ca: ≤50 mg/kg
Fe: ≤10 mg/kg

适用性

complies for appearance of solution

SMILES string

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

InChI

1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2

InChI key

PODWXQQNRWNDGD-UHFFFAOYSA-L