硫酸钠

Na₂SO₄

142.04

MFCD00003504

231-820-9

Replaces: SX0761-20

Assay (alkalimetric): ≥ 99.0 %
Assay (alkalimetric, calculated on dried substance): 98.5 - 101.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.01 %
Acidity or alkalinity: passes test
pH-value (5 %; water; 25 °C): 5.2 - 8.0
Chloride (Cl): ≤ 0.001 %
Phosphate (PO₄): ≤ 0.001 %
Total nitrogen (N): ≤ 0.0005 %
Heavy metals (ACS): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.0001 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.002 %
Mg (Magnesium): ≤ 0.001 %
Loss on drying (130 °C): ≤ 0.5 %
Loss on ignition (800 °C): ≤ 0.5 %
Corresponds to ACS, ISO, Reag. Ph Eur

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

300

ACS reagent

reag. ISO
reag. Ph. Eur.

≥99.0% (alkalimetric)
98.5-101% dry basis (alkalimetric)

solid

>2000 mg/kg LD₅₀, oral (Rat)

5.2-8.0 (20 ℃, 50 g/L in H₂O)

884 ℃ (lit.)

2.68 g/mL at 25 ℃ (lit.)

1400‑1600 kg/m³

chloride (Cl^-): ≤0.001%
phosphate (PO₄^3-): ≤0.001%

As: ≤ 0.0001%
Ca: ≤ 0.005%
Fe: ≤ 0.0005%
K: ≤ 0.002%
Mg: ≤ 0.001%
N: ≤ 0.0005%
heavy metals: ≤ 0.0005%
heavy metals (as Pb): ≤ 0.0005%

2-30℃

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

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

PMZURENOXWZQFD-UHFFFAOYSA-L

13 - Non Combustible Solids

WGK 1