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Sodium pentasodium ethylenediaminetetramethylenephosphonate, EDTMP·Na₅

Sodium pentasodium ethylenediaminetetramethylenephosphonate, EDTMP·Na₅

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Organophosphorus scale and corrosion inhibitor chelating agent

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Keywords:

Organophosphorus scale and corrosion inhibitor chelating agent

Detailed introduction

Ethylene Diamine Tetra ( Methylene Phosphonic Acid ) Pentasodium Salt ( EDTMP•Na ₅ )

Alternative names: Sodium ethylenediaminetetramethylenephosphonic acid, Sodium ethylene diamine tetramethylene phosphonic acid

CAS No.7651-99-2

Molecular formula: C₆H₁₅O₁₂N₂P₄Na₅

Relative molecular mass: 546.13

Structural formula:

Performance and Applications:

EDTMP·Na ₅ It is a neutral product containing nitrogen‑containing organic polyphosphonates, classified as a cathodic corrosion inhibitor. It is completely miscible with water, non‑toxic and environmentally benign, and exhibits excellent chemical stability and thermal resistance, in… 200℃ It still exhibits excellent scale-inhibition performance. In aqueous solution, it can dissociate into 8 It contains both positive and negative ions, enabling it to chelate multiple metal ions and form large‑molecule, polymeric network complexes with numerous monomeric units, which are loosely dispersed in water, thereby disrupting the normal crystallization of calcium scale. EDTMP Sodium salts exhibit excellent scale-inhibition performance against calcium sulfate and barium sulfate scales.

EDTMP•Na ₅ It is used as a corrosion and scale inhibitor for circulating water and boiler water, a complexing agent in cyanide-free electroplating, a water softener in the textile dyeing and printing industry, and for cooling water treatment in power plants, among other applications.

EDTMP•Na ₅ The solid product exhibits slight hygroscopicity, facilitating transportation and use in cold conditions.

Technical Indicators:

Project	Indicator
Project	HG/T 4329-2012	——
Appearance	Amber-colored transparent liquid	White powdery solid
Active ingredient (With EDTMP·Na ₅ Accounting )%	30.0-32.6	≥81.4
Active ingredient (Expressed as EDTMPA)%	24.0-26.0	≥65.0
Chloride (in C L ^- Accounting )%	≤2.0	≤2.0
Iron (in terms of Fe ²⁺ ) content μg/g	≤10.0	≤20.0
Density (20℃) g/cm ³	≥1.25	——
pH (1% aqueous solution)	6.0-8.0	6.0-8.0

Packaging and Storage:

EDTMP·Na ₅ Liquid is packaged in plastic drums, with each drum… 25kg or 250kg , or as determined by user requirements. Solids are packaged in plastic bags lined with polyethylene, with a net weight of per bag. 25kg , or as determined by user requirements. Store in a cool, dry indoor location, protected from moisture. The shelf life of the solid form is ten months, and that of the liquid form is also ten months.

Security Protection:

EDTMP•Na ₅ It is non‑hazardous; observe appropriate personal protective measures during handling, and avoid contact with skin, eyes, etc. If contact occurs, rinse thoroughly with plenty of water.

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Ethylenediaminetetra(methylenephosphonic acid) pentasodium HGT4329-2012 EDTMPS5NA

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