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No phosphorus environmental-friendly water treatment agent Polyaspartic Acid Sodium Salt (PASP Na Salt)

China biggest Sodium of Polyaspartic Acid supplier

Product Details:

CAS No.: 23783-26-8
Chemical formula: C4H5NO3M(C4H4NO3M)m(C4H4NO3M)nC4H4NO3M2
Certification: ISO 9001/IAF/CANS/CCS
Model Number: Polyaspartic Acid Sodium Salt (PASP Na Salt)

Payment & Shipping Terms:

Minimum Order Quantity: 1 ton
Price: Negotiation
Packaging Details:  
Delivery Time: 5-20 Days
Payment Terms: L/C, T/T, Western Union
Supply Ability: 30,000 Tons per month
Detailed Product Description
Classification: Phosphonate Appearance: Yellow to umber liquid
Grade Standard: Industrial Grade/Tech Grade HS Code:  
UN No.:   IUPAC Name: Polyaspartic Acid Sodium Salt (PASP Na Salt)
Molecular Weight:   Melting Point:  
CAS No.: 23783-26-8 EINECS No.:  
MF: C4H5NO3M(C4H4NO3M)m(C4H4NO3M)nC4H4NO3M2 Other Names: PASP;Sodium Salt of Polyaspartic Acid;Sodium PASP;polyaspartate;Sodium Salt of Polyaspartic Acid (PASP)


No phosphorus environmental-friendly water treatment agent Polyaspartic Acid Sodium Salt (PASP Na Salt)


1. General description of Polyaspartic Acid Sodium Salt (PASP Na Salt)


PASP is a kind of biopolymer materials, of which molecules contains abundant amido bond, carboxyl and other active groups. Amido peptide bond has biological activity and high chemical stability, hard to decompose at high temperature; carboxyl group can be complex with many metal ions in water, which make PASP have high chemical activity in aqueous solution; in each structural unit of PASP, the oxygen and nitrogen atoms can easily form hydrogen bonds with water molecules, it has good hydrophilicity and water solubility. The special molecular structure of PASP ensures that it has good dispersing ability, corrosion inhibiting properties, excellent biodegradability and environmental friendly characteristics.


2. Applications for Polyaspartic Acid Sodium Salt (PASP Na Salt)?

According to different molecular weights of PASP, it can be used in water treatment, agriculture and forestry, petroleum exploitation, detergents and other fields.

I. Water treatment
PASP is a water-soluble polymer and is a new type of green water treatment agent. It has the characteristics of non-phosphorus, non-toxic, pollution-free and fully biodegradable. It has strong chelating ability to ions, and has the dual effects of corrosion inhibition and scale inhibition. It has good scale inhibition effect on calcium carbonate, calcium sulfate, barium sulfate, calcium phosphate and other scale-forming salts and scale inhibition rate of calcium carbonate.
PASP has characteristic of polyanion surfactant, which can be chelated with magnesium, copper, iron, cobalt and other polyvalent metal ions after hydrolysis. It has excellent scale inhibition and dispersion properties. As scale and corrosion inhibitor, PASP is widely used in industrial circulating water, boiler water, reverse osmosis water, oil recycled water, desalination water treatment, especially for water treatment systems of high hardness, high alkalinity, high pH and high concentration.
PASP has good scale inhibition on CaCO3,CaSO4,BaSO4,Ca3(PO4)2 ,etc.. Its scale inhibition rate for CaCO3 is 100%.
PASP is an alternative of phosphor-containing Water Treatment Chemicals and has better scale inhibition effects. PASP can avoid eutrophication and second pollution in water system.

II. Agriculture and Forestry
PASP can be used as fertilizer synergist in agriculture. Adding it into urea can improve fertilizer efficiency by 20-40% and reduce the fertilizer dosage;
Adding PASP in the production process for fertilizer can increase fertilizer granulation level, increase the number of standard particles to 97%, thereby enhancing the rate of finished products and reduce loss;
PASP can improve the nutrient absorption of grain, vegetable, melon and fruit, and flowers, promote root growth, increase crop yields, enhance plants and its stress resistance;
PASP can be used with phosphorodithioate and other pesticides to enhance pesticide effect, crop yields and improve crop quality;
PASP can form complex with heavy metals in the soil, displace heavy metals from the soil, in order to achieve the purpose of restoration of soil pollution.

III. Petroleum exploitation PASP can form chelation with calcium, magnesium, copper, iron and other metal ions to attach to the metal surface of the container to prevent metal corrosion. It is an excellent corrosion inhibitor, especially for preventing oil pipeline corrosion caused by carbon dioxide;
PASP with molecular weight around 10000 can reduce fluid viscosity. In bentonite mud, when the dosage of PASP is 0.4%, the viscosity reduction rate can be over 70%;
It has good resistance to salt and calcium;

IV. Detergents
PASP has characteristics of anionic surfactant and good chelation, dispersion properties. It can soften water, dispersing, anti-fouling, and prevent re-contamination of the greasy dirty off the clothes during the washing process;
It can be adsorbed on the surface of dinnerware, prevent mouldy, resulting in better cleaning effect. It is an important component of dishwashing detergent for cleaning of hard surfaces;

V. Other Applications
Because of its good dispersion to inorganic and organic compouds, PASP has been applied with different degree in pharmaceuticals, pigments, paints, leather, inorganic chemicals, oilfield chemicals and other fields.PASPis called "third-generation polyurea", it can be used to produce protective coatings of high weather resistance, high resistance to chemical corrosion, fast-curing paint, and applied directly to fast curing coatings on the metal substrate and industrial flooring, etc., ; it can be used in the tanning process as tanning agents, produces biodegradable leather; pharmaceutical carrier material made from PASP has been widely used in family planning, anti-tumor drugs making etc.

3. Technical Specifications

Polyaspartic Acid Sodium Salt (PASP Na Salt)?


Product Name

PASP 100/40%

PASP solid

Delivery Form




orange to brown

orange to brown powder


very low


pH-Value 10% solution

9.5 C 10.5

< 10.5

Density at 20C [g/ml]

< 1.30

- - -

Bulk Density [kg/Liter]

- - -

0.55C 0.90

Viscosity at 20C [mPa*s]

20 - 60

- - -

Freezing point [C]


- - -

Solubility in Water at 20C [g/100g H2O]

each ratio


COD [mg O2/g]

< 330

< 480


Product Name

PASP 100/40%

PASP solid

Polyaspartic Acid, Sodium Salt [% w/w]

> 38.0

> 94

Aspartic Acid, Sodium Salt [% w/w]

< 2.0

< 0.5

Asparagine Sodium Salt [% w/w]

< 0.3

< 0.1

Fumaric Acid, Sodium Salt [% w/w]

< 0.3

< 0.1

Maleic Acid, Sodium Salt [% w/w]

< 0.2

< 0.1

Water [% w/w]

< 60



4. Packaging & Delivery

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

Delivery time 7-20 days after deposit received.
5. FAQ

1. Are you a manufacturer or a trading company?
Yes, We have engaged in water treatment chemicals production for 20 years.

2. Why you choose our water treatment chemicals?
We are the most professional manufacturer of water treatment chemicals in China and have the most advanced manufacturing technology in China. .

3. What is the usage of water treatment chemicals?
In terms of mechanism of action, the role of scale inhibitors is chelating and solubilizing, coagulation and dispersion, electrostatic repulsion, and crystal distortion. In the laboratory evaluation test, dispersion is a remedial measure for cooperating and lattice distortion is the remedy for dispersion.
According to the polymerization components of the scale inhibitor, it can be divided into two categories of natural polymer scale inhibitors and synthetic polymer scale inhibitors. The synthetic polymer scale inhibitors can be further divided into carboxylic acid polymer scale inhibitors, Sulfonate polymer scale inhibitors, phosphorus-containing polymer scale inhibitors and environmentally friendly scale inhibitors.
4. Can you accept OEM order?
Yes, we can. We provide professional water treatment chemicals  OEM Service for our customers.
5. What payment term can you accept?
Usually, we accept 30% T/T deposit, 70% T/T before shipping. Or 50% T/T deposit, 50% T/T against B/L copy. Usually, we could accept L/C, but if you have special cases, we can negotiate.

Tag:PASP;Sodium Salt of Polyaspartic Acid;Sodium PASP;polyaspartate;Sodium Salt of Polyaspartic Acid (PASP)