Sodium Sulfate Anhydrous ACS Crystals

Sodium Sulfate can be used as a laboratory reagent. Product specifications, MSDSs and certifications are available under Additional Information.
 
 
 
Chemical Data 
Chemical Formula Na2SO4  
CAS Number 7757-82-6   
Molecular Weight 142.04   
Use Laboratory reagent   
Description White fine granular or powder; odorless   
Containers 300 lb. fiber drums; 25 kilogram packs EU only   
Storage Store in a clean, dry warehouse in the original unopened containers.  
Revision Date 01/03/06  
 
 
Chemical Specifications 
Tests Specifications  
Appearance  White crystals/powder   
Solubility  Clear/colorless   
Loss on Ignition  0.5% maximum   
Heavy Metals (as Pb)  5 ppm maximum   
pH of 5% solution  5.2 - 9.2   
Chloride (Cl)  0.001% maximum   
Nitrogen Compounds (N)  5 ppm maximum   
Iron (Fe)  0.001% maximum   
Calcium  0.01% maximum   
Magnesium  0.005% maximum   
Potassium  0.01% maximum   
Phosphate  0.001% maximum   
Insoluble Matter  0.01% maximum   
Assay (As Na2SO4) 99.0% minimum