PRODUCTS
- Organic Phosphonate Scale and Corrosion Inhibitor
- Organic Phosphate
- Polycarboxylic Scale Inhibitor and Dispersant
- Bactericide and Algicide
- Copper Corrosion Inhibitor
- Non-phosphorus Scale and Corrosion Inhibitor
- Inorganic Water Treatment Chemicals
- Detergent Auxiliary
- Pigment Dispersant for Water-based Paintings and Coatings
- Textile Printing and Dyeing Chelating Dispersant
- M-Hydroxybenzoic Acid
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Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)
| CAS No. 1429-50-1 | Dequest: | 2040 | |
Molecular Formula: |
C6H12O12N2P4Na8 |
Molecular weight: |
612.13 |
Structural Formula: |
 |
||
Properties
EDTMPS is nitrogenous organic polyphosphonic acid, a part of cathodic corrosion inhibitor.Its corrosion inhibition is 3~5 times better than that of inorganic polyphosphate. It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance. It shows excellent scale inhibition ability under temperature 200℃. It can dissociate into 8 positive-negative ions, thus can chelate with many metal ions to form polymer reticulation complex, to destroy the normal crystallization of calcium scale. EDTMPS shows better antiscale effects to calcium sulfate and barium sulfate.
Specification
| Items | Index |
Appearance |
Clear yellow to umber transparent liquid |
Active component (EDTMPS) % |
30.0min |
Organic phosphonic acid (as PO43-) % |
10.0min |
Phosphorous acid ( as PO33 )% |
5.0max |
Phosphoric acid (as PO43 )% |
1.0max |
Ph (1% water solution ) |
9.5-10.5 |
Density ( 20℃ )g/cm3 |
1.25min |
Chloride (Cl) % |
3.0max |
Usage
EDTMPS can be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogen electroplating industry and a water-softening agent in printing & dyeing industry. When used alone, 2~10mg/L is preferred. When built with HPMA by ratio ETDMP:HPMA=1:3, it can be used for low pressure boiler. It can also be built with BTA, PAAS and zinc salt.
Package and Storage
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.