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1. SC-401 (ZF121SC) PAA and SC-302(ZF122SC) PAAS

Issuing time:2019-04-08 20:11

The polycarboxylic acid product is a kind of polymer with low molecular weight. The carboxyl will ionize the H+ or metal cation and polymer anion. So it is conductive. That’s why they are called polyelectrolyte. As water treatment agents, their molecular weight is around 103-104, which is lower than other common polymers. So they are low molecular weight polyelectrolyte.

The scale inhibition is mainly from the negative ions which is the best chelate for Ca2+, Mg2+, Fe2+, Cu2+, etc. so it has the scale inhibition. In addition, physical and chemical adsorption will happen between the negative ions and the precipitate or minicrystal. Then the double electrode layer will be formed on the surface of minicrystal and precipitate, which causes the repulsion between minicrystals and prevents the formation of big crystals and sclaes.

Besides these on above, the polycarboxylic acid scale inhibitor can also prevent the scale from depositing on the surface of the metal by distorting the lattice. Therefore they have apparent threshold effect.

SC-401(ZF121SC) PAA and SC-302(ZF122SC) PAAS

(1) properties:

PAA&PAAS is one of the most popular polycarboxylic acid water treatment agents. It can be used alone with concentration of 2-8ppm. It can also be used by mixing with organic phosphonates, organophosphates and polyphosphates, which shows great synergistic effect. It won’t scale when it works in alkaline environment and high concentration. Last but not least there is no pollution at all.

(2) specification:

name

PAA

PAAS

appearance

Colorless or light yellow liquid

Colorless or light yellow liquid

Solid content, %

≥25.0%

≥30.0%

Free monomer(by acrylic acid)

≤1.25%

≤1.25%

The content of Iron (by Fe)

≤0.0020%

≤0.0020%

PH(1%aq)

≤2.00

6.0-8.0

The content of ammonium (by NH4+)

≤0.035%

≤0.035%

Density(20℃g/ml)

≥1.08

≥1.15

Limiting viscosity(30℃)

0.055-0.10

0.055-0.10

(3) application:

Prevent the circulating cooling water system from scaling in power plant, steel works, chemical industry, fertilizer industry, refinery and air conditioning system.

(4) packing and storage:

Packed in 25kg plastic bucket. It can be stored for 2 years.


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