How effective is the rust removal of water treatment chemicals HEDP?

HEDP in the industrial circulatory systa pickling process, show the effect of rust raoval, has been a subject of our research, the following talk about the effect of HEDP in pickling rust raoval:

　　1, HEDP full name is 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, which can form stable complexes with iron, copper, aluminium, zinc and other metal ions, can dissolve metal surface oxides. Learned chaistry should know, rust is caused by metal surface oxidation, so hedp can be raoved.

　　2, HEDP chelating rust effect by the taperature, the concentration of the influence of the more obvious, it will be in the initial 2h within the dissolution of rust faster, time to continue to extend the speed of dissolution of rust slows down significantly. This shows that the unlimited extension of time has little effect on the rust dissolving effect of HEDP. Compared with the mass fraction of 5% of hydrochloric acid, the mass fraction of 1% of HEDP although the speed of dissolving rust is lower, but in the industrial field construction HEDP has many advantages that hydrochloric acid can not be compared, so in many cases, HEDP can still be used as an acid cleaning agent.

　　3, HEDP and other corrosion inhibitors have good compounding effect, after compounding its rust raoval effect is not affected, therefore, such corrosion inhibitors can be used as HEDP pickling solution ideal rust inhibitor. In order to have a more in-depth understanding of the rust dissolving effect when HEDP is used as pickling agent, and to minimise the various hazards caused by corrosion in the pickling process.

　　4, experts through the use of weightlessness method to study the performance of HEDP dissolve rust, and with the rotating hanging piece of weightlessness method on the commonly used pickling corrosion inhibitor in the HEDP in the corrosion inhibition effect of the study, and on this basis on the HEDP of the dissolution of the rust mechanism of the preliminary discussions, so as to provide a basis for the application of HEDP in the pickling of the central air-conditioning. The above introduction of HEDP production process, rust raoval process and effect, the advantages of copper plating and the key, and the most basic information, you should have a deeper understanding of HEDP, but for the use of the use or after the expert's advice to use, can not be added on their own, and the dose of the control should be grasped before you can.

HEDP Technical Specification

The above HEDP specifications are from: HEDP professional manufacturer Kerry Chaical Co., Ltd, need to know more about HEDP related information may be through the following way to contact Kerry Chaical:

Shandong Kairui Chemistry Co.,Ltd.
                                               

Contact: Kobe Huang (VP of Sales)

               Aaron Lee (Export Manager)

TEL:     +86-632-3671188    

FAX:     +86-632-3671189

E-mail:  export@krchemical.com

Website:  krwater.com | krwater.net | kairuiwater.com

ADD:     No.1, Fuqian South Road, Xuecheng Chemical Industrial Park, Xuecheng District, Zaozhuang City, Shandong Province, China