硫酸钠

质量水平

200

等级

puriss.

方案

99.0-100.5% (calc. to the dried substance)

表单

crystalline

质量

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

杂质

acidity or alkalinity, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.04% free alkali (as NaOH)
≤0.05% free acid (as H₂SO₄)

缺失

≤0.5% loss on drying, 130 °C

pH值（酸碱度）

5.2-8 (20 °C, 50 g/L)

mp

884 °C (lit.)

密度

2.68 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl^-): ≤200 mg/kg

痕量阳离子

As: ≤2 mg/kg
Ca: ≤50 mg/kg
Fe: ≤50 mg/kg
Mg: ≤50 mg/kg
Zn: ≤300 mg/kg

适用性

complies for appearance of solution

SMILES字符串

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

InChI

1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI key

PMZURENOXWZQFD-UHFFFAOYSA-L