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Sodium of Polyaspartic Acid (PASP)

CAS No. 181828-06-835608-40-6 Molecular weight: 1000-5000

Molecular Formula: C4H6NO3(C4H5NO3M2)C4H6NO4

Structural Formula:





PASPis a water soluble polymer. It is a green water treatment agent, with properties of non-phosphor, non-nitrogen, non-pollution and fully biodegradation.

PASPhas good scale inhibition on calcium carbonate, calcium sulfate, barium sulfate, calcium phosphate, etc..

Its scale inhibition rate for calcium carbonate is 100%.

Moreover, PASPhas dispersion and corrosion inhibition properties to metal equipment.

PASPis an alternative of phosphor-containing Water Treatment Chemicals, avoiding water system eutrophication and second pollution.





Amber transparent liquid

Solid content %

40.0 min

Density (20)g/cm3

1.2 min

pH(1% water solution)



PASPcan be used as scale and corrosion inhibitor in industrial circulating cool water system, boiler water, reverse osmosis, oilfield water and desalination plant.

The effects will be even better than ordinary organophosphines when used in situation of high hardness, high alkaline, high pH value and high concentration index. When built with PBTCA, the synergism is obvious.

Due to its green and non-pollution to environment, PASPcan be used as accessory ingredients in daily and fine chemicals.

PASPcan be used in agricultural as nutrient absorption intensifier to improve the production of vegetable, melon and fruit, and flowers. When used together with pesticide, its effects will be improved.

Package and Storage:

Usually 250kgs Plastic Drum or IBC Drum.


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