Main Products
- Polycarboxylic Antiscalant and Dispersant
- Polyacrylic Acid (PAA) 50%
- Polyacrylic Acid (PAA) 63%
- Polyacrylic Acid Sodium Salt (PAAS) 45%
- Polyacrylic Acid Sodium Salt Solid (PAAS)
- Hydrolyzed Polymaleic Anhydride (HPMA)
- Copolymer of Maleic and Acrylic Acid (MA/AA)
- Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer (AA/AMPS)
- Acrylic Acid/Acrylate/Phosphonic Acid/Sulfosalt Tetra-copolymer (TH-241)
- TH-613 Acrylic-acrylate-sulfosalt copolymers
- Copolymer of Phosphono and carboxylic Acid (PCA)
- TH-1100 acrylic homopolymer
- TH-1010 acrylic homopolymer
- TH-2000 Carboxylate-Sulfonate copolymer
- TH-3100 Carboxylate-Sulfonate-Nonion Terpolymer
- TH-5000 Carboxylate-Sulfonate copolymer
- TH-904 aqueous dispersant
- TH-361 Polycarboxylate
- Scale Inhibitor for Black Liquid Evaporator In Papermaking
- Ceramic dispersant TH-908
- Carboxylate-sulfonate-acrylate terpolymer
- Biodegradable Antiscalant and Dispersant
- Polyepoxysuccinic Acid (PESA)
- Sodium Salt of Polyaspartic Acid (PASP)
- Phosphonates Antiscalants, Corrosion
Inhibitors and Chelating Agents - Amino Trimethylene Phosphonic Acid (ATMP)
- 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
- Ethylene Diamine Tetra (Methylene Phosphonic Acid) EDTMPA (Solid)
- Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA)
- 2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTC)
- Polyhydric alcohol phosphate ester (PAPE)
- 2-Hydroxy Phosphonoacetic Acid (HPAA)
- HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA
- Polyamino Polyether Methylene Phosphonic Acid(PAPEMP)
- Bis(HexaMethylene Triamine Penta (Methylene Phosphonic Acid)) BHMTPMP
- Hydroxyethylamino-Di(Methylene Phosphonic Acid) (HEMPA)
- Sodium Salt of Triethylene-tetramine Hexmethanephonic Acid (TETHMP)
- Salts of Phosphonates
- Tetra sodium salt of Amino Trimethylene Phosphonic Acid (ATMP•Na4)
- Penta sodium salt of Amino Trimethylene Phosphonic Acid (ATMP•Na5)
- Mono-sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na)
- Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na2)
- Tetra Sodium Salt 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 (PBTC•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
- Dodecyl Dimethyl Benzyl Ammonium Chloride (Benzalkonium Chloride)(DDBAC/BKC)
- Isothiazolinones (CMIT/MIT)
- Tetrakis(hydroxymethyl)phosphonium sulfate(THPS)
- DBNPA
- GLUTARALDEHYDE
- TH-406 Composite Bactericide
- TH-409 Sludge Stripper
- Built Scale & Corrosion Inhibitors and Pretreatment Filming Agents
- TH-907 Non-P Scale&Corrosion Inhibitor
- TH-503 Scale and Corrosion Inhibitor for Boiler
- TH-503B Scale and Corrosion Inhibitor for Boiler
- TH-504 Scale and Corrosion Inhibitor for Heating Water
- TH-601 Scale and Corrosion Inhibitor for Iron & Steel Plant
- TH-604 Scale and Corrosion Inhibitor for Power Plant
- TH-607 Scale Inhibitor for Oilfield Refill Water
- TH-607B Scale Inhibitor for Barium and Strontium
- TH-610 Scale Inhibitor for Dusty Water
- TH-619B Scale and Corrosion Inhibitor
- TH-628 scale and Corrosion Inhibitor
- TH-658 Scale And Corrosion Inhibitor For High Hardness Water
- TH-682 Scale and Corrosion Inhibitor for low hardness water
- Corrosion Inhibitor For Closed System
- TH-701 Nonstop Cleaning agent
- TH-706 Deoiling Detergent
- TH-707 Pretreatment Filming Agent
- Corrosion Inhibitor
- Sodium salt of Tolyltriazole (TTA•Na)
- Tolyltriazole (TTA)
- Sodium salt of 1,2,3-Benzotriazole (BTA•Na)
- 1,2,3-Benzotriazole (BTA)
- Sodium salt of 2-Mercaptobenzothiazole (MBT•Na)
- 2-Mercaptobenzothiazole (MBT)
- Corrosion Inhibitor for Hydrochloric Acid Cleaning
- Oxygen Scavenger
- Carbohydrazide
- Cyclohexylamine
- Morpholine
- Hydrazine hydrate
- Reverse Osmosis Chemicals
- TH-0100 Antiscalant and Dispersant for RO Membrane
- TH-150 Antiscalant and Dispersant for RO Membrane
- TH-200 Antiscalant and Dispersant for RO Membrane
- TH-191 Antiscalant and Dispersant for RO Membrane
- THASD-200 Antiscalant and Dispersant for RO Membrane
- TH-260 Acid Detergent for RO Membrane
- TH-261 Alkali Detergent for RO Membrane
- Other
- Sodium Diethylhexyl Sulfosuccinate
- ATBS Sodium Salt (ATBS.Na)
- Acetyl chloride
Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic
Acid (HEDP•Na2)
CAS No. 7417-83-7
Molecular Formula: C2H6O7P2Na2 Molecular weight: 250
Structural Formula:
Properties:
Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 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℃, Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 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. Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid can form six-ring chelating compounds with metal ions in water system, Ca2+ in particular. Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 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 content (HEDP) % | 16.5 min | 74.0-79.0 |
| Active content (HEDP•Na2) % | 20.0 min | 89.9-95.8 |
| Density (20℃)g/cm3 | 1.12-1.22 | -- |
| Fe, mg/L | -- | 20.0 max |
| Moisture，% | -- | 3.0-6.0 |
| PH (1% water solution) | 4.0-6.0 | 4.0-6.0 |
Usage:
Disodium Salt 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, Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as detergent for metal and nonmetal. In dyeing industry, Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na2 is used as chelating agent.
Package and Storage:
For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.
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.