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EDTA: Chemistry and Properties

EDTA: Chemistry and Properties

Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...

Masking and Demasking Agents

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...

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Related Experiment Video

Updated: May 28, 2026

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix

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Published on: June 14, 2016

Glutaraldehyde/HEMA in clinical dentistry

Leendert Boksman¹

¹Schulich School of Medicine and Dentistry, London, Ontario, Canada. lboksman@clinicalresearchdental.com

Dentistry Today

|October 11, 2011

Summary

No abstract available in PubMed .

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