Category: Work

The Function of Corrosion and Scale Inhibitors

October 27, 2026October 27, 2026 admin No Comments

Corrosion and scale inhibitors serve two distinct but complementary functions in industrial water systems: protecting metal surfaces from electrochemical degradation and preventing mineral deposits from forming on heat transfer surfaces. These functions are achieved through different chemical mechanisms, though many commercial formulations combine both activities in a single product. Corrosion Inhibition: Protecting Metal Surfaces The…

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The working principle of Glutamic acid N,N-diacetic acid, tetrasodium salt (GLDA-Na4)

October 21, 2026October 21, 2026 admin No Comments

The working principle of GLDA-Na₄ is fundamentally based on its strong chelation (sequestration) of metal ions, particularly calcium (Ca²⁺) and magnesium (Mg²⁺), combined with selective adsorption onto specific mineral surfaces. Chelation and Sequestration GLDA-Na₄ is an aminopolycarboxylic acid salt. Its molecular structure contains multiple carboxylate groups that act as electron donors, forming stable, water-soluble ring…

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Performance of 2-Hydroxyphosphonoacetic Acid (HPAA) in Blends

October 20, 2026 admin No Comments

The performance of 2-Hydroxyphosphonoacetic Acid (HPAA) in blends is defined by a clear trade-off: it is a specialist corrosion inhibitor that excels when paired with zinc or specific polymers, but it is not a standalone workhorse for all water conditions. Its value in a formulation comes from synergistic effects that boost corrosion protection and reduce…

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The Function of Antiscalants

October 19, 2026October 19, 2026 admin No Comments

Antiscalants function primarily by interfering with the scale formation process, rather than by removing scale that has already formed. They are used to maintain the performance and lifespan of equipment like membranes and heat exchangers by keeping sparingly soluble salts in solution or altering how they crystallize. Core Mechanisms of Action Antiscalants generally work through…

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Does methylglycine N,N-diacetic acid, trisodium salt (MGDA·Na3) pollute the environment?

October 17, 2026 admin No Comments

Based on the available environmental assessment data, methylglycine N,N-diacetic acid, trisodium salt (MGDA·Na3) does not cause significant environmental pollution and is widely recognized as a readily biodegradable, environmentally friendly chelating agent. Its core environmental advantage lies in its rapid and thorough biodegradability and low aquatic toxicity, and it does not contain phosphorus, thus avoiding water…

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Chemical Properties of Hexamethylenediaminetetra(methylenephosphonic acid) (HMDTMPA)

October 16, 2026 admin No Comments

Hexamethylenediaminetetra(methylenephosphonic acid), commonly abbreviated as HMDTMPA or HDTMPA, is an organophosphonic acid with strong chelating and scale-inhibiting properties. Its chemical behavior is defined by its four phosphonic acid groups, high polarity, and strong affinity for metal cations. Key Chemical Properties Acidic Nature HMDTMPA is a strong acid. Its predicted pKa value is approximately 0.70, and…

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Quality Standard for 2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTC)

October 14, 2026 admin No Comments

The quality standard for 2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTC) in China is defined by the chemical industry standard HG/T 3662-2010. Primary Standard: HG/T 3662-2010 This standard, titled “Water treatment chemicals — 2-Phosphonobutane-1,2,4-tricarboxylic acid”, is the currently effective version, having replaced the older HG/T 3662-2000 . It specifies the requirements, test methods, inspection rules, and packaging for PBTC,…

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The working principle of N,N-Diethylhydroxylamine (DEHA)

October 13, 2026 admin No Comments

N,N-Diethylhydroxylamine (DEHA) functions primarily as an oxygen scavenger and metal passivator in boiler water systems. Its working principle involves two key mechanisms: chemical reduction of dissolved oxygen and formation of a protective oxide film on metal surfaces. Oxygen Scavenging Mechanism DEHA reacts directly with dissolved oxygen in water, reducing it to harmless products. The overall…

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Application Principle of Acrylic Acid-2-Hydroxypropyl Acrylate Copolymer (T-225)

October 12, 2026 admin No Comments

Acrylic Acid-2-Hydroxypropyl Acrylate Copolymer (T-225) operates primarily through strong adsorption onto crystal surfaces and subsequent dispersion of insoluble particles, with its hydroxypropyl groups providing enhanced affinity for calcium phosphate scales that simple polyacrylates cannot match. Core Working Mechanisms 1. Crystal Surface Adsorption via Non-Bonding Interactions Molecular dynamics simulations reveal that T-225 binds to calcium phosphate…

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Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA)

October 6, 2026 admin No Comments

Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA) is typically supplied as a 50% aqueous solution in dark brown or reddish-brown liquid form. It is packaged in containers ranging from small laboratory bottles to large industrial bulk containers. Typical Packaging Options Scale Container Type Common Sizes Notes Laboratory / Small Scale Plastic bottle 100 mL, 500…

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