Category: Chelating Agents
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EDTA-K
EDTA-2K, CAS# 2001-94-7; EDTA-3K, CAS# 17572-97-3. Sequestering, complexing and chelating agents. Liquid products, used in oilfields, etc.
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Hydroxy-IDS
Tetrasodium hydroxy-iminodisuccinate; Na4HIDS CAS Number: 141656-02-2;Synonyms:Aspartic acid, N-(1,2-dicarboxyethyl)-3-hydroxy-, tetrasodium salt;Aspartic acid, N-[(1S)-1,2-dicarboxyethyl]-3-hydroxy-, sodium salt (1:4);3-hydroxy-2,2′-iminodisuccinic acid tetrasodium salt; HIDS;190195-65-4; Tetrasodium Hydroxy-IminoDiSuccinate, abbreviated as Na4HIDS, is a non-phosphorus degradable chelating/complexing agent (sequestrant, sequestering agent). Na4HIDS can effectively chelate metal ions such as iron and copper, and hard water ions such as calcium and magnesium over a…
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Chelating capacity and stability
Chelating Agents List Stability constants (logK values) – in active pH range Metal ion EDTA DTPA GLDA MGDA IDS Al3+ 16.4 18.6 12.2 7.7 14.1 Ba2+ 7.8 8.6 3.5 4.8 3.4 Ca2+ 10.7 10.7 6.4 7 5.2 Cd2+ 16.5 18.9 9.1 10.6 8.4 Co2+ 16.5 18.8 10.0 11.1 10.5 Cu2+ 18.8 21.2 13.1 13.9 13.1 Fe2+…
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ATMP
ATMP has good chelating, inhibition effects. It can prevent scale-forming salts in water, especially calcium carbonate scale. ATMP is stable in water, has good corrosion inhibition when compounded with zinc and phosphate water treatment chemicals.
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Comparison of MGDA, GLDA, ASDA and EDTA
MGDA, GLDA, ASDA and EDTA belong to amino carboxylic acid chelating agents with similar structure. MGDA: Alanine, N,N-bis(carboxymethyl)-, trisodium salt; Methylglycine N,N-diAcetic acid, trisodium salt;GLDA: L-Glutamic acid, N,N-bis(carboxymethyl)-, sodium salt (1:4); Glutamic acid N,N-diAcetic acid tetrasodium salt;ASDA: Aspartic acid, N,N-bis(carboxymethyl)-, tetrasodium salt; L-aspartic acid N, N-diAcetic acid tetrasodium salt; EDTA: Glycine, N,N’-1,2-ethanediylbis[N-(carboxymethyl)-;Ethylene diamine tetraAcetic acid;…
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Etidronic acid, HEDP
HEDP/Etidronic acid is a typical organophosphine chelating agent, as water treatment scale and corrosion inhibitor, cleaning and descaling agent, sequestering and complexing agent, etc.
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IDS
CAS Number: 144538-83-0; Molecular formula: C8H7NO8Na4; IDS-Na4 is a non-phosphorus, biodegradable chelating agent. Good chelating property to copper and iron ions.
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Sodium Glucoheptonate
CAS No.: 31138-65-5; 10094-62-9. Green Chelating Agent, specially under alkaline condition, for metal and glass surface cleaning agents. Sodium glucoheptanoate has better complexing effect under alkaline condition. This product is widely used in metal surface cleaning, food packaging glass bottle cleaning, concrete admixture, and other industries.
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EDTA-Na
EDTA sodium salt are easily soluble in water. EDTA-2Na, CAS 6381-92-6; EDTA-4Na, CAS 13235-36-4; EDTA Acid (CAS#60-00-4) is insoluble in cold water. Complexing and sequestering agents: DTPA, GLDA, MGDA, HEDP, EDDS, etc.
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GLDA
CAS No.: 51981-21-6 Chemical formula: C8H7NO8.4Na; GLDA is an environmentally friendly chelating agent, biodegradable, phosphorus-free and cyanide-free.
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DTPA & DTPA-5Na/5K
DTPA is traditional chelating agent. DTPA acid, CAS No. 67-43-6; DTPA-5Na pentasodium, CAS No. 140-01-2; DTPA penta potassium(DTPA-5K), CAS No. 7216-95-7; DTPA Acid is white crystal, slightly soluble in water,solubility in water (20 ℃), 5g/l. DTPA-5Na is solution, a yellow or light yellow transparent alkaline liquid, soluble in water.
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ASDA
ASDA-Na4; CAS No.: 34612-80-1; Molecular formula: C8H7NO8Na4; Synonym: Tetrasodium dicarboxymethyl aspartate; L-aspartic acid N, N-diacetic acid tetrasodium salt; ASDA is a biodegradable and environmentally friendly chelating agent.
