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  HEDP
 

CAS 2809-21-4               
Synonym	                Hydroxyethylidene-1, 1-Diphosphonic Acid
Application             A scale and synergistic corrosion inhibitor for iron rust and 
			mineral scale from pipes of cooling circulation water units and boilers; 
			Metal chelate agent for color fixing and bleaching in textile; 
			Complexing agent for electron plate and scale cleaning agent for metals.
Grade
Appearance
Content of Active Ingredient, %
Content of Phosphorous acid PO3, % max.
Content of Phosphoric acid PO4, % max.
Content of Fe, ppm
Content of Chloride, ppm max
Density (20C) g/cm3
pH (1% water solution), max
Liquid
colorless transparent
58.0 - 62.0
2.5
0.7
35
100
1.39-1.49
2
Solid
white crystalline poweder
98.0
2.5
0.7
35
100
-
2
Packing			250 kg plastic drum, IBC for liquid, 25 kg plastic bags for solid
Country Of Origin	China, India