How to distinguish the quality of HEDP

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Distinguishing the quality of Hydroxyethylidene Diphosphonic Acid (HEDP) requires evaluating its chemical purity, physical properties, performance efficiency, and stability. Below are key methods and criteria to assess HEDP quality: 1. Key Quality Indicators (1) Active Content (Purity) High-Quality HEDP: Liquid form (50–60% concentration): Active content ≥50%. Solid form (crystalline powder): Purity ≥95%. Test Methods: Potentiometric Titration: Measures phosphonic…

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PAA packaging and storage environment

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PAA (Polyacrylic Acid) is a widely used water-soluble polymer in water treatment, detergents, and dispersants. Proper packaging and storage are crucial to maintain its stability and performance. 1. Packaging Specifications Aspect Requirements Material Polyethylene (PE) drums or plastic-lined steel containers (corrosion-resistant). Form Liquid (typically 30–50% aqueous solution) or solid powder. Sealing Airtight to prevent moisture absorption (powder) or…

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How to use the chelating ability of PAA to treat heavy metal ions in industrial wastewater?

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Using polyacrylic acid (PAA) to treat heavy metal ions (e.g., Pb²⁺, Cd²⁺, Cu²⁺, Hg²⁺) in industrial wastewater leverages its carboxylate (–COO⁻) chelation and electrostatic adsorption capabilities. Here’s a step-by-step guide to optimize the process: 1. Mechanism of PAA Chelation Carboxylate Binding: PAA’s –COO⁻ groups form stable complexes with metal ions via bidentate or bridging coordination, especially with transition metals (e.g., Cu²⁺, Ni²⁺) and heavy metals (e.g.,…

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How is PESA used in agriculture?

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PESA is a green, biodegradable scale inhibitor and chelating agent widely used in agriculture for irrigation systems, soil conditioning, and nutrient management. Below are its key applications: 1. Irrigation System Maintenance Prevents Scale & Clogging in Drip/Trickle Irrigation Problem: Hard water (high Ca²⁺, Mg²⁺, HCO₃⁻) causes mineral deposits, clogging emitters. Solution: PESA (5–20 ppm) inhibits CaCO₃, CaSO₄ scale, improving water flow….

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OA-12 Packaging and Storage

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To maintain the stability and performance of OA-12, proper packaging and storage conditions are critical. Below are the industry-standard practices: 1. Packaging Specifications Parameter Requirement Rationale Material HDPE (High-Density Polyethylene) drums Prevents oxidation and moisture ingress Lining Polyethylene inner liner (for metal drums) Avoids metal ion contamination Capacity 25 kg, 200 kg, or 1000 kg…

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What is Morpholine?

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Synonyms: 1-Oxa-4-azacyclohexane; Tetrahydro-2H-1,4-oxazine Molecular Formula: C₄H₉NO Molecular Weight: 87.12 CAS Number: 110-91-8 EINECS Number: 203-815-1 Applications: Morpholine is a versatile chemical with a wide range of applications across various industries: Rubber Industry: Used as a raw material for manufacturing rubber accelerators (such as NOBS, OTOS, and MDS), sulfurization agents (like DT-DM), and anti-scorching agents. Cleaning…

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what is Hydrazine hydrate?

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Molecular Formula: H₄N₂·H₂O Molecular Weight: 50.06 CAS Registry Number: 10217-52-4   Applications: Hydrazine hydrate is a versatile chemical with the following properties and uses: Solubility: It can mix with water and ethanol in any proportion but is not soluble in chloroform and ether. Reactivity: It has weak alkaline properties and strong reducing capabilities. It reacts…

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Phosphino-Carboxylic Acid

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Phosphino-Carboxylic Acid (PCA) is an organic compound with excellent scale inhibition and dispersion properties. It exhibits excellent dispersion of calcium carbonate and calcium phosphate scales by introducing a phosphonic acid group into the carboxyl group, and effectively inhibits the deposition of barium sulfate, strontium sulfate, and silica scales. PCA has wide applicability, good chemical stability,…

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Methylglycine N,N-diacetic acid, Trisodium Salt

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MGDA.Na3 is an environmentally friendly small molecule chelating agent, similar in structure to NTA, easily biodegradable and phosphorus-free. Specification: Items Index Appearance Light yellow transparent liquid White to light yellow powder/granule Content, % 38.0 min 80.0 min pH(1% water solution) 10.0-12.0 11.0-12.0 NTA, % 0.10 max 0.10 max Density (20℃) g/cm3 1.29-1.33 – Colour APHA…

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2-Hydroxy Phosphonoacetic Acid

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HPAA is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPAA can improve zinc solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When built with low molecular polymers, its corrosion inhibition effect is even better….

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