HEDP.Na4 (Tetrasodium Etidronate) Supplier & Manufacturer CAS 3794-83-0
As a prominent global HEDP.Na4 & Tetrasodium etidronate supplier and manufacturer, Sinochem offers premium-grade organophosphorus scale and corrosion inhibitors tailored for harsh industrial operating environments. Backed by our specialized, fully compliant China HEDP.Na4 factory, we deliver both high-purity liquid and solid granular forms engineered to meet rigid international quality protocols.
- Excellent Scale Inhibition: Demonstrates superior threshold inhibition against Calcium Carbonate (CaCO3), Calcium Sulfate, and Barium Sulfate scale by distorting crystal lattices.
- Outstanding Chlorine Stability: Maintains its underlying molecular structure and chelating efficacy even in water systems undergoing active chlorine disinfection or biocidal treatment.
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Premium Solid Free-Flowing Properties: Our solid granular form features an optimized, dust-free particle distribution with exceptional free-flowing and tableting properties, making it ideal for solid-grade blended formulations.
HEDP.Na4 Description
NAME: HEDP.Na4 & Tetrasodium etidronate
Synonyms: HEDP Tetrasodium Salt / Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid / Tetrasodium (1-hydroxyethylidene)bisphosphonate / Hydroxy Ethylidene Diphosphonic Tetrasodium
Molecular Formula: C2H4O7P2Na4
Molecular Weight: 294
CAS NO.: 3794-83-0
Density: N/A
Boiling point: 578.8ºC at 760mmHg
Melting point: 198-199ºC
Flashing point: 303.8ºC
Appearance: Colorless to yellowish transparent liquid or White powder
Forms Available: 30% Liquid / 85% Solid Powder
Solubility: Soluble in water and ethanol
Properties:
1. 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.
2. 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℃.
3. 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.
Package:
Liquid: 200L plastic drum, IBC(1000L), customers’ requirement.
Solid: 25kg/bag, customers’ requirement.
Storage: Store at room temperature and keep dry
Safety Protection: Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.
Equivalent Brands: DEQUEST 2016; Turpinal 4NL; Tarpinel 4NL; Sequion 10Na4
Tetrasodium etidronate Technical
Our production facility maintains strict adherence to the following Tetrasodium etidronate Technical parameters for both liquid and solid specifications:
| Item | Index | |
| Appearance | Colorless to yellowish transparent liquid | White powder |
| Active content (HEDP)% | 20.3-21.7 | 60.0 min |
| Active content (HEDP•Na4)% | 29.0-31.0 | 85.0 min |
| Phosphoric acid (as PO43-)% | 18.4-20.4 | 55.0 min |
| Fe, mg/L | 20.0 max | 35.0 max |
| Moisture，% | – | 10.0 max |
| Density (20℃)g/cm3 | 1.26-1.36 | – |
| PH (1% water solution) | 10.0-12.0 | 11.0-12.0 |
HEDP Tetrasodium Salt Applications
Our commercial-grade Tetrasodium Etidronate is a highly versatile chemical additive deployed across multiple heavy industries:
- Industrial Water Treatment & Cooling Towers: Functions as a robust scale inhibitor for Calcium Carbonate (CaCO3), Calcium Sulfate, and Barium Sulfate in high-pressure boilers and cooling water systems up to 250℃.
- I&I Cleaners & Household Detergents: Integrated into institutional, industrial, and household cleaning formulations. It works as a metal chelating agent to soften hard water, strip metallic mineral scales, and stabilize peroxide bleaching systems.
- Cyanide-Free Metal Electroplating: Functions as an elite non-cyanide complexing agent and surface treatment additive for steel and non-ferrous metals, ensuring smooth crystalline deposition.
- Textile, Dyeing & Print Auxiliaries: Deployed in the textile sector as a peroxide stabilizer and color-fixing agent to prevent trace iron contamination from dulling fabrics.
Frequently Asked Questions (FAQ)
Q1: How can I request a quote or price list for bulk HEDP.Na4?
A:You can request a competitive wholesale quote by contacting our direct sales team via the quote form below. We provide customized packaging (250 kg drums, 1250 kg IBC, 25 kg bags) and flexible shipping terms (FOB, CIF, CFR).
Q2: Is your HEDP.Na4 compatible with Dequest 2016 or Turpinal 4NL?
A: Yes, our HEDP.Na4 is chemically equivalent to Dequest 2016, Turpinal 4NL, and Sequion 10Na4, offering direct drop-in replacement with identical chelating efficiency and purity standards.
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