Merck
All Photos(2)

1.06649

Supelco

Sodium sulfate

anhydrous for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Linear Formula:
Na2SO4
CAS Number:
Molecular Weight:
142.04
MDL number:
EC Index Number:
231-820-9

grade

ACS reagent

Quality Level

Agency

reag. ISO
reag. Ph. Eur.

product line

EMSURE®

assay

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

form

solid

potency

>2000 mg/kg LD50, oral (Rat)

impurities

≤0.01% Insoluble matter

loss

≤0.5% loss on drying, 130 °C
≤0.5% loss on ignition, 800 °C

pH

5.2-8.0 (20 °C, 50 g/L in H2O)

mp

884 °C (lit.)

density

2.68 g/mL at 25 °C (lit.)

bulk density

1400‑1600 kg/m3

anion traces

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%

cation traces

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%

storage temp.

2-30°C

SMILES string

[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

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Related Categories

Linkage

Replaces: SX0761-20

Analysis Note

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

Legal Information

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

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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