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
Taico.Inc
Mobile: +1 302 690 1860
E-mail: mgt@taico-materials.com
ADD: 401 Cooper Landing Rd, C-18 Cherry Hill,
NJ 08008
Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic
Acid (HEDP•Na2)
CAS No. 7414-83-7
Molecular Formula: C2H6O7P2Na2 Molecular weight: 250
Structural Formula:
Properties:
HEDP•Na2 is an organophosphonic acid corrosion inhibitor, it can chelate with Fe, Cu, and Zn ions, it can dissolve the oxidized materials, it has good scale and corrosion inhibition effects even under 250℃, it is stable under high pH value, not easy to be hydrolyzed, not easy to be decomposed under normal light and heat condition, its acid/alkaline and chloride oxidation tolerance are better than that of other organophosph-onic acids. HEDP•Na2 can form six-ring chelating compounds with metal ions in water system, Ca2+ in particular. HEDP•Na2 has good scale inhibition effects and obvious dissolution threshold effects. When used with other Water Treatment Chemicals, the synergistic effects is better.
Specification:
| Items | Index | |
|---|---|---|
| Appearance | Colorless to light yellow transparent liquid | White powder |
| Active component (HEDP)% | 16.5 min | 74.0-79.0 |
| Active content（HEDP•Na2）% | 20.0 min | 89.8 min |
| density (20℃)g/cm3 | 1.12-1.22 | -- |
| Fe，mg/L | -- | 35 max |
| Phosphorous acid (PO33-)% | -- | 3 max |
| Moisture，% | -- | 3.0-6.0 |
| PH (1% water solution) | 4.0-6.0 | 4.0-6.0 |
Usage:
HEDP•Na2 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•Na2 is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na2 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na2 is used as chelating agent.
Package and Storage:
Liquid: 200L plastic drum,IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.
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:
Disodium Etidronate Hydrate;Disodium dihydrogen bisphosphonate (1-hydroxyethylidene)bisphosphonate