Develop biological wastewater treatment agent, disodium phosphate

Manufacturers (Origin) 
 Sichuan, Guizhou 
 Use level 
 Industrial 
 Content 
 98 (%) 
 Granularity 
 80 (mesh) 
 CAS Number 
 7558-79-4 
 Implementation of quality standards 
 HG / T 2965-1985 
 Brand 
 DSP 







 Disodium hydrogen phosphate (disodium phosphate) 

 Guangzhou Supply: disodium hydrogen phosphate 

 Chemical formula: Na2HPO4.XH2O 

 Molecular Weight: 358.14 

 Properties: colorless transparent monoclinic crystal prism system, the relative density of 1.52, in air, easily weathered, easy to lose five crystal water molecules and the formation of seven water objects (Na2HPO4.7H2O). Anhydrous dibasic sodium phosphate as a white powder; disodium hydrogen phosphate dihydrate is a white sand-like crystal stream; twelve water-disodium hydrogen phosphate is white or colorless crystals, 250 ℃ decomposed into sodium pyrophosphate, 1.52 specific gravity, melting point 35.1 ℃; are soluble in water, insoluble in alcohol, in the air easily weathered. 

 Specifications: 

 No. 

 Name of index 

 Anhydrous 

 Dihydrate 

 Twelve water objects 

 1 

 Main content% ≥ 

 98.0 

 98.0 

 98.0 

 2 

 Phosphorus pentoxide (P2O5 dollars)% ≥ 

 49.0 

 39.0 



 3 

 Fineness (60 mesh)% ≥ 

 90 





 4 

 PH (1% aqueous solution) 

 8.8-9.2 

 8.6-9.3 

 8.8-9.2 

 5 

 Sulphate (as SO4)% ≤ 

 0.5 

 0.20 

 1.20 

 6 

 Water insoluble% ≤ 

 0.20 

 0.20 

 0.10 

 Uses: used as boiler water softener for tanning leather, fabric weight agent, flame retardant wood and paper, the glaze