Main Products
- Polycarboxylic antiscale and dispersant
- Eco-friendly antiscale and dispersant
- Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
- Salts of Phosphonates
- Tetra sodium salt of Amino Trimethylene Phosphonic Acid (ATMP•Na4)
- Penta sodium salt of Amino Trimethylene Phosphonic Acid (ATMP•Na5)
- Potassium salt of Amino Trimethylene Phosphonic Acid (ATMP•Kx)
- Mono-sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na)
- Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na2)
- Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4)
- Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Kx)
- Ethylene Diamine Tetra (Methylene Phosphonic Acid) Pentasodium Salt (EDTMP•Na5)
- Hepta sodium salt of Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMP•Na7)
- Sodium salt of Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMP•Nax)
- 2-Phosphonobutane -1,2,4-Tricarboxylic Acid, Sodium salt (PBTCA•Na4)
- Potassium Salt of HexaMethylene-DiamineTetra (MethylenePhosphonic Acid) HMDTMPA•K6
- Partially neutralized sodium salt of bis hexamethylene triamine penta (methylene phosphonic acid) BHMTPH•PN(Nax)
- Bactericide and Algicide
- Built Scale & Corrosion Inhibitorsand Pretreatment Filming Agents
- Corrosion Inhibitor
- Oxygen Scavenger
- Reverse Osmosis Chemicals
- Other
Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic
Acid (HEDP•Na4)
CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na) Synonyms: Tetrasodium etidronate
Molecular Formula: C2H4O7P2Na4 Molecular weight: 294
Structural Formula:
Properties:
Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is the sodium salt of HEDP, Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is an good scale inhibitor for calcium carbonate, it can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.
The solid Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is white powder, soluble in water, easily deliquescence, suitable for use in winter and freezing districts. Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is a kind of organophorphonic acid scale and corrosion inhibitor, can form stable complex with Fe, Cu and Zn ions, it can dissolve the oxides on metal surface, it has good scale and corrosion inhibition effect under 250℃.
Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP•Na4 is used as detergent for metal and nonmetal. In dyeing industry, Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as chelating agent.
Specification:
| Items | Index | |
|---|---|---|
| Appearance | White powder | Colorless to light yellow transparent liquid |
| Active component (HEDP)% | 56.0 min | 20.3-21.7 |
| Active component (HEDP•Na4)% | 79.9 min | 29.0-31.0 |
| Total phosphoric acid (as PO43-) % | 52.0-54.0 | 18.4-20.4 |
| Fe，mg/L | 35.0 max | 20 max |
| Moisture，% | 15 max | -- |
| density (20℃)g/cm3 | -- | 1.26-1.36 |
| PH | 10.5-12.0 (1% water solution) | 10.0-12.0 (as it) |
Package and Storage:
For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. For solid: inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place.
Safety Protection:
Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.