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EDTMPS Ethylenediamine tetramethylene phosphate sodium Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
Alias: Ethylenediamine tetramethylene phosphonate sodium
CAS No. 1429-50-1
Molecular formula C6H12O12N2P4Na8 Molecular mass: 611.98
I. Performance and use:
EDTMPS is a nitrogen-containing organic polyphosphonate, which is a cathode-type corrosion inhibitor. Compared with inorganic polyphosphate, the corrosion inhibition rate is 3-5 times higher. It can be miscible with water, non-toxic and pollution-free, good chemical stability and temperature resistance, and still have good scale inhibition effect at 200℃. It can dissociate into 8 positive and negative ions in aqueous solution, so it can chelate with multiple metal ions to form multiple monomer structure macromolecular network complex, which is loosely dispersed in water, so that the normal crystallization of calcium scale is destroyed, and the effect of EDTMPS on calcium sulfate and barium sulfate scale is good.
EDTMPS are used as corrosion and scale inhibitor for circulating water and boiler water, complex agent for cyanogen free electroplating, chelating agent for textile printing and dyeing industry and oxygen bleaching stabilizer.
Ii. Technical indicators conform to HG/T 3538-2011
Item | Specification |
Appearance |
Light yellow to yellow transparent liquid |
Active fraction (measured by EDTMPS) % ≥ |
30.0 |
Organic phosphine (as PO43-) % ≥ |
10.0 |
Phosphite (by PO33-) % ≤ |
3.0 |
Phosphoric acid (in PO43-) % ≤ |
1.0 |
Density (20℃) g/cm3 ≥ |
1.25 |
Chloride (in Cl-) % ≤ |
2.0 |
pH value (1% aqueous solution) |
9.5-10.5 |
3. Method of use
When EDTMPS is added alone in circulating cooling water, the general dose is 2-10mg/L. EDTMPS and HPMA can be used for water treatment in low pressure boiler after mixing with 1:3 ratio. EDTMPS can also be used in combination with BTA, PAAS, zinc salt, etc.
4. Packaging and storage
EDTMPS are packed in plastic drums, 30kg or 250kg per barrel, or stored in a cool indoor place according to user requirements, the storage period is six months.
5. Safety protection
EDTMPS is weakly alkaline. Pay attention to labor protection during operation, avoid contact with skin and eyes, etc., and rinse immediately with plenty of water after contact.
Service we can provide:
1. Mixed container: We can mix different items in one container.
2. Quality control: Before shipment, we can provide free sample for test. Inspection before shipping.
3. Packing: We can pack according to your requirements and also give you some other packing methods for reference and suggest adequate packing methods according to global trend. We will send you photo of goods before shipment.
4. Prompt shipment: We usually can ship the goods within 7 days for 1*20'FCL conatiner after order confirmed and also provide professional shipping documents for your Customs clearance.
5. We work closely with DHL, FEDEX, UPS,ETC., we can ship samples and small quantity goods to you fast and safe.
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