Main Products
- Polycarboxylic antiscalant and dispersant
- Eco-friendly antiscalant 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)
- Biocide and Algicide
- Built Scale & Corrosion Inhibitorsand Pretreatment Filming Agents
- Corrosion Inhibitor
- Oxygen Scavenger
- Reverse Osmosis Chemicals
- Other
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E-mail: mgt@taico-materials.com
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NJ 08008
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:
HEDP•Na4 is the sodium salt of HEDP, HEDP•Na4 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 HEDP•Na4 is white powder, soluble in water, easily deliquescence, suitable for use in winter and freezing districts. It 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℃.
HEDP•Na4 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, HEDP•Na4 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na4 is used as chelating agent.
Specification:
| Items | Index | |
|---|---|---|
| Appearance | White powder | Colorless to yellowish transparent liquid |
| Active content (HEDP)% | 56.0 min | 20.3-21.7 |
| Active content (HEDP•Na4)% | 79.9 min | 29.0-31.0 |
| Total phosphoric acid (as PO43-) % | 52.0 min | 18.4-20.4 |
| Fe，mg/L | 35.0 max | 20.0 max |
| Moisture，% | 15 max | -- |
| Density (20℃)g/cm3 | -- | 1.26-1.36 |
| PH (1% water solution) | 11.0-12.0 | 10.0-12.0 |
| Phosphorous Acid % | 1.0 max | |
| Colour APHA | 150.0 max | |
Package and Storage:
Liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
Solid: 25kg/bag,customers’ requirement. Storage for ten months in shady room and dry place.
Safety Protection:
Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.
Synonyms:
Tetrasodium (1-hydroxyethylidene)bisphosphonate