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The production method of scale inhibitor PBTCA (37971-36-1): 1. Add equimolar dimethyl phosphite and dimethyl maleic acid into a reaction kettle, and react at 100-105 ℃ for 4 hours under the catalysis of sodium peroxide to generate intermediate (I). 2. Transfer (I) to a condensation kettle and undergo Michael addition reaction with acrylic acid in the presence of a catalyst to generate intermediate (II). 3. Transfer (II) to a hydrolysis kettle and hydrolyze it under acid catalysis to obtain the product.
PBTCA,Cas:37971-36-1 can be used as a high efficient scale and corrosion inhibitor in situations of high temperature, high hardness, high alkali and high concentration index. In lavation fields, PBTC is used as chelating agent and metal detergent.
PBTC is usually used together with zinc salt, copolymer, organophosphine, imidazole and other water treatment chemicals. When used alone, the dosage of 5-15mg/L is preferred.
PBTCA,Cas:37971-36-1 is good corrosion and scale inhibitors are widely used in the anti scaling treatment of circulating cooling water systems and oilfield water injection systems. Used as a corrosion and scale inhibitor for industrial water treatment.
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