Water Treatment Chemicals, Phosphonates, Polymers, Biocides

Polycarboxylic antiscale and dispersant

Polyaspartic Acid Sodium (PASP)

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

Molecular weight: 1000-5000

Molecular Formula: C4H6NO3(C4H5NO3M2)C4H6NO4

Structural Formula:

Sodium of Polyaspartic Acid (PASP) Structural Formula


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 has good scale inhibition on calcium carbonate, calcium sulfate, barium sulfate, calcium phosphate, etc.. Its scale inhibition rate for calcium carbonate is 100%.[p Moreover, PASP 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.


items index
Appearance Amber transparent liquid
Solid content % 40.0 min
Density (20℃)g/cm3 1.2 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 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, PASP can be used as accessory ingredients in daily and fine chemicals.

Polyaspartic Acid Sodium can 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:

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

Safety Protection:

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


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Shandong IRO Water Treatment Co., Ltd.

Office Address: 2802, 1st Building, No.19 Zhangzhou 2nd Rd, Qingdao, China
Factory Address: Mushi Town,Tengzhou, Zaozhuang, 277500, China
Tel: +86-532-85027466 Fax: +86 532 85028486
Email: info@irowater.com

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