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Polyaspartic Acid Sodium Salt


Polyaspartic acid sodium is a water-soluble polymer. It is a green water treatment agent, with properties of non-phosphor, non-nitrogen, non-pollution and fully biodegradation. Polyaspartic acid sodium salt has good scale inhibition on calcium carbonate, calcium sulfate, barium sulfate, calcium phosphate, etc.. Its scale inhibition rate for calcium carbonate is 100%.

Moreover, poly aspartic acid sodium has dispersion and corrosion inhibition properties to metal equipment. Polyaspartic acid sodium is an alternative of phosphor-containing water treatment chemicals, avoiding water system eutrophication and second pollution.

CAS No.: 181828-06-8,35608-40-6

Molecular Weight: 1000-5000

Molecular Formula: C4H6NO3(C4H5NO3M2)C4H6NO4

Structural Formula:

Polyaspartic Acid


AppearanceAmber transparent liquid
Solid content, %40.0 Min.
Density (20℃), g/cm31.2 Min.
pH (1% water solution)9.0-11.0


Polyaspartic acid sodium can 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 a situation of high hardness, high alkaline, high pH value, and high concentration index. When built with PBTC, the synergism is obvious.

Due to its green and non-pollution to the environment, poly aspartic acid sodium salt can be used as accessory ingredients in daily and fine chemicals.

Polyaspartic acid sodium can be used in agriculture as a nutrient absorption intensifier to improve the production of vegetables, melon and fruit, and flowers. When used together with pesticides, its effects will be improved.

Package and Storage:

200L plastic drum, IBC(1000L), customers’ requirements. Storage for ten months in a shady room and dry place.

Safety Protection:

Alkaline, Avoid contact with eye and skin, once contacted, flush with water.