Ethylenediamine tetramethylene phosphate EDTMPS

Ethylenediamine tetramethylene phosphonate (EDTMPS)

Alias: Ethylenediamine tetramethylenephosphonate, ethylenediamine tetramethylene phosphonate

Molecular formula C6H15O12N2P4Na5 Relative molecular mass: 546.33

1. performance and use

EDTMPS is a nitrogen-containing organic polyphosphonic acid, which is a cathodic corrosion inhibitor. Compared with inorganic polyphosphates, the corrosion inhibition rate is 3 to 5 times higher. It is miscible with water, non-toxic and non-polluting, chemically stable and temperature-resistant, and has good scale inhibition effect at 200 °C. EDTMPS can be dissociated into 8 positive and negative ions in aqueous solution, and thus can be chelated with a plurality of metal ions to form a plurality of monomer structure macromolecular network complexes, which are loosely dispersed in water, so that normal crystallization of calcium scale is destroyed. EDTMPS has good scale inhibition effect on calcium sulfate and barium sulfate scale.

EDTMPS is used as a corrosion and scale inhibitor for circulating water and boiler water, a complexing agent for cyanide-free plating, a chelating agent for the textile printing and dyeing industry, and an oxygen bleach stabilizer.

2. technical indicators

3. the method of use

When it is added separately in circulating cooling water, the general dose is 2-10 mg/L. EDTMPS and HPMA can be used in the low-pressure boiler furnace water treatment after being compounded in a ratio of 1:3. EDTMPS can also be used in combination with BTA, PAAS, zinc salts and the like. 

4. packaging and storage

EDTMPS is packed in plastic drums, 25kg per drum or according to user needs. Store in a cool place indoors, storage period of six months. 

5. security protection

EDTMPS is neutral, pay attention to labor protection during operation, avoid contact with skin, eyes, etc., and rinse immediately with plenty of water after contact.

Ethylenediamine tetramethylene phosphonate EDTMPS

EDTMPS is a nitrogen-containing organic polyphosphonic acid, which is a cathodic corrosion inhibitor. Compared with inorganic polyphosphates, the corrosion inhibition rate is 3 to 5 times higher. It is miscible with water, non-toxic and non-polluting, chemically stable and temperature-resistant, and has good scale inhibition effect at 200 °C.

Introduction to the main features and uses of EDTMPS

EDTMPS is a nitrogen-containing organic polyphosphonic acid, which is a cathodic corrosion inhibitor. Compared with inorganic polyphosphates, the corrosion inhibition rate is 3 to 5 times higher. It is miscible with water, non-toxic and non-polluting, and has good chemical stability and temperature resistance. EDTMPS still has good scale inhibition effect at 200 °C.

Introduction to the use of EDTMPS in steam locomotive boilers

Water quality The water quality used in our steam locomotive boilers is medium hardness water quality. Its carbonate hardness is greater than the non-carbonate hardness, and the evaporation residue content is within the Ministry's regulations.