【CAS】 7651-99-2
Alias: Sodium pentadentate ethylenediamine tetrakisphosphonate Ethylenediamine pentadentate tetrakisphosphonate EDTMPS
Molecular formula: C6H15O12N2P4 Na5 Relative molecular mass: 546.13
Structural Formula: 
- 1.Product Performance
EDTMP•Na5 is a nitrogen-containing organic polyphosphate. It is a cathodic type corrosion inhibitor and can be mixed with water. It is non-toxic and pollution-free, has good chemical stability and heat resistance. It still has a good scale inhibition effect at 200℃. This product has good scale inhibition effects on calcium sulfate and barium sulfate scales and can be used as a scale inhibitor for oilfield injection water.
2.
| Items | Index |
| Appearance | Amber transparent liquid |
| Active content (as EDTMPA)% | 24.0-26.0 |
| Active content (as EDTMP•Na5)% | 30.0-32.6 |
| Chloride (Cl–) % | 2.0 max |
| Density (20℃) g/cm3 | 1.25 min |
| Fe, mg/L | 20.0 max |
| PH (1% water solution) | 6.0～8.0 |
- Application Scope and Usage Method
EDTMP•Na5 is used as a scale inhibitor and corrosion inhibitor for circulating water and boiler water, a complexing agent for cyanide-free electroplating, a chelating agent in the textile printing and dyeing industry, and an oxygen bleaching stabilizer. When added alone in the circulating cooling water, the general dosage is 5-10 mg/L. When compounded with HPMA in a ratio of 1:3, it can be used for water treatment in low-pressure boilers. This product can also be used in combination with BTA, PAAS, zinc salts, etc.
- Packaging and Storage
EDTMP•Na5 is packaged in plastic drums. Each drum contains 25 kg or as determined by the user. It should be stored in a cool, indoor place. The shelf life is ten months.
- Safety Protection
EDTMP•Na5 is weakly alkaline. When using, labor protection equipment must be worn. Contact with skin and eyes should be avoided. Rinse with plenty of water immediately after contact.
