Maleic anhydride acrylic acid copolymer AA-MA
CAS No. 26677-99-6
Structural formula
Ⅰ. Performance and use
MA/AA is a kind of polyelectrolyte with low molecular weight, which is made by the copolymerization of maleic acid and acrylic acid in a certain proportion. MA/AA has a strong dispersive effect on carbonates, high thermal stability, and can be used under severe conditions such as high temperature of 300℃. It has good compatibility and synergistic effect with other water treatment agents. It can inhibit the formation of scale including phosphate. MA/AA is widely used in low-pressure boilers, central heating, central air conditioning and various circulating cooling water systems due to its excellent scale inhibition and high temperature resistance. MA/AA can also be used as chelating dispersant in the textile and dyeing industry.
Ⅱ. Technical indicators
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Item
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Indicators
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HG/T 2229-2018
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--
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Appearance
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A clear red-brown liquid
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Light yellow to yellow transparent liquid
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Solid content/%
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≥48.0
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≥50.0
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pH(1%Aqueous solution)
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2.0～3.0
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2.0～3.0
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Density(20℃)/g·cm-3
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≥1.20
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≥1.18
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Free monomers(MA)/%
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≤5.0
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≤5.0
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Ⅲ. Method of use
In combination with other organic phosphonate, the dosage is generally 2 ~ 10mg/L.
The dosage of MA/AA as textile printing and dyeing aid and washing aid was determined by test.
Ⅳ. Safety and protection
MA/AA is acidic, pay attention to labor protection when operating, should avoid contact with the skin, eyes, etc., after contact with plenty of water rinse.
Ⅴ. Packaging and storage
MA/AA shall be packed in plastic drums of 25kg or 200kg each. The storage period is twelve months.
