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798592

Sigma-Aldrich

Sodium sulfate

anhydrous, granular, free-flowing, Redi-Dri™, ACS reagent, ≥99%

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About This Item

Linear Formula:
Na2SO4
CAS Number:
7757-82-6
Molecular Weight:
142.04
EC Number:
231-820-9
MDL number:
MFCD00003504
UNSPSC Code:
12352302
PubChem Substance ID:
329768661
NACRES:
NA.21

grade

ACS reagent
anhydrous

Quality Level

200

product line

Redi-Dri™

Assay

≥99%

form

granular
powder

quality

free-flowing

impurities

≤0.01% insolubles
≤5 ppm N compounds

loss

≤0.5% loss on ignition

pH

5.2-9.2 (25 °C, 5%)

mp

884 °C (lit.)

density

2.68 g/mL at 25 °C (lit.)

anion traces

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

cation traces

Ca: ≤0.01%
Fe: ≤0.001%
K: ≤0.01%
Mg: ≤0.005%
heavy metals: ≤5 ppm (by ICP-OES)

storage temp.

room temp

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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General description

Sodium sulfate is an inorganic salt that is commonly used as a reagent as well as a catalyst in organic synthesis. Additionally, it is also used as a drying agent in organic synthesis due to its affinity for water and compatibility with most organic compounds. During the work-up, an organic phase is treated with anhydrous sodium sulfate for the removal of traces of water.

Application

Sodium sulfite can be used in aqueous two-phase partitioning systems along with polyethylene glycol for the purification of biomolecules.

Features and Benefits

  • Increased efficiency – Eliminates time and effort of loosening hardened powders      
  • Safety – Eliminates tools of force used to break up clumps
  • Ecology – Reduces waste as it does not stick to the packaging
  • Economy – Faster preparation and solvation increase productivity and reduce costs      
  • Assured Quality – Excellent, expert-tested quality with no anti-caking agents     
  • Flexible volumes – Available from research amounts to scale-up quantities

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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