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In the hydrogen-peroxide bleaching stage of papermaking, trace iron, copper, and manganese ions in the liquor catalyze the wasteful decomposition of peroxide — weakening both the bleaching effect and the fiber. Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA) has extremely strong chelating power over a wide range of metal ions, locking up these “troublemakers” at…

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Polyaspartic Acid (PASP) is a biodegradable polymer inspired by natural proteins. As a chelant and scale inhibitor it is both mild and eco-friendly. It forms stable complexes with metal ions such as calcium, magnesium, iron, and copper to prevent scale formation, while degrading naturally in the environment without long-term accumulation — an ideal substitute for…

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As control over total-phosphorus discharge tightens across regions, traditional phosphorus-based scale inhibitors face restrictions in some applications, and phosphorus-free, biodegradable alternatives are gaining traction. PESA (Polyepoxysuccinic Acid) is a prime example: it contains no phosphorus and degrades readily in the natural environment, yet still delivers good scale inhibition and dispersion against calcium carbonate and calcium…

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Benzalkonium chloride (BAC), a mixture of alkylbenzyldimethylammonium chlorides (typically C12, C14, and C16 homologs), is a cationic surfactant with broad-spectrum bactericidal activity. Its efficacy is concentration-dependent, strongly selective for Gram-positive bacteria, and significantly compromised against Pseudomonas aeruginosa and in the presence of organic matter or hard water. Selective Activity: Gram-Positive vs. Gram-Negative BAC is markedly…

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PBTC (2-Phosphonobutane-1,2,4-tricarboxylic acid) is a specialized organophosphonate that combines phosphonic acid and carboxylic acid functional groups in a single molecule. Shandong Kairui Chemistry Co., Ltd. supplies PBTC as a 50% active aqueous solution, manufactured to HG/T 3662-2010 standard, delivering consistent performance in the most demanding water treatment environments. Structural advantage. The dual functional structure of…

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An excellent chelating agent must not only deliver strong chelation performance but also adapt to complex application scenarios. Shandong Kairui Chemistry’s MGDA solid powder is exactly such a versatile performer. Automatic dishwashing detergents: In phosphate-free formulas, MGDA effectively removes tea stains, starch stains, and protein-based stubborn soils, compensating for the performance drop often seen in…

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