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Technical specifications
Chemical and physical indicators (industrial grade)
| Serial Number | Parameter Name | Specification Requirements |
|---|---|---|
| 1 | Molecular Formula | C₁₀H₂₈N₆O₈ |
| 2 | Molecular weight | 360.4 |
| 3 | CAS Number | 22473-78-5 |
| 4 | Content | ≥ 50.0% |
| 5 | pH (1% aqueous solution) | 8.5 — 9.5 |
| 6 | Chelation Value | ≥ 138.7 mg CaCO₃/g |
| 7 | Color | ≤ 200 APHA |
| 8 | Specific Gravity (25℃) | 1.15 — 1.25 |
| 9 | Appearance | Light straw-colored liquid |
Product Basic Information
| Project | Description |
|---|---|
| Product Name | EDTA Tetraammonium Salt Solution |
| Alternative Product Name | Ethylenediaminetetraacetic acid, tetraammonium salt |
| English name | EDTA-4NH₄ Solution / Tetraammonium EDTA Solution |
| CAS Number | 22473-78-5 |
| Molecular Formula | C₁₀H₂₈N₆O₈ |
| Molecular weight | 360.4 |
| Appearance | Light straw-colored liquid |
Product description
Product overview
Ethylenediaminetetraacetic acid tetraammonium salt solution (EDTA-4NH₄), molecular formula C₁₀H₂₈N₆O₈, molecular weight 360.4, CAS number 22473-78-5. The product is a light straw-colored liquid, content ≥50%, pH 8.5-9.5. It has excellent ability to chelate metal ions, forming stable water-soluble complexes with a wide range of di- and trivalent metal ions.
Key Advantages
- Highly concentrated formulationContent ≥50%, Cost-Effective in Use
- Excellent chelating capacityChelating capacity ≥138.7 mg CaCO₃/g, effectively chelates various metal ions.
- Wide pH RangeStable and effective in pH range 8.5–9.5
- Low colorColor ≤200 APHA, high purity, excellent quality
- Liquid formEasily diluted and used, convenient for industrial operations
Product Features
Application recommendations
Recommended dosage
| Applications | Recommended dosage | Description |
|---|---|---|
| Industrial detergents | 5-20% | Adjust according to purity requirements and formulation |
| Metal Surface Treatment | 1-10% | For removal of metal ion contaminants |
| Water Treatment | 10-50 mg/L | Adjust according to water hardness |
| Textile printing and dyeing | 0.5-2% | Chelation of metal ions to improve coloring quality |
Application recommendations
- Shake well before use to ensure solution uniformity
- Compatible with most detergent components, but a preliminary compatibility test is recommended.
- Avoid direct mixing with strongly acidic substances to prevent reduction of chelating effect.
- Recommended storage temperature 5–35°C, avoid freezing and high temperatures.
- The specific dosage should be adjusted according to formulation requirements, target crop, and local regulations.
- Recommended to conduct a trial test before large-scale application
- When mixing with other chemicals, conduct a compatibility test first.
Area of application
Industrial cleaning
Used for cleaning industrial equipment and treating metal surfaces, effectively removing metal ion contaminants.
- Detergent formulation
- Metal Surface Treatment
- Maintenance and cleaning of equipment
Water Treatment
Used for softening hard water, prevents scale formation.
- Industrial water treatment
- Recirculating water supply system
- Boiler water treatment
Chemical industry
Used as a chelating agent for metal ions in various chemical engineering processes.
- Catalyst stabilization
- Management of reaction conditions
- Product Purification
Textile printing and dyeing
Used for controlling metal ions in textile dyeing and printing processes.
- Dyeing and Finishing
- Fabric treatment
- Water softening
Frequently asked questions
Key differences:
- Chemical FormEDTA-4NH₄ is the tetraammonium salt, EDTA-4Na is the tetrasodium salt.
- pH valueEDTA-4NH₄ has a weakly alkaline reaction (pH 8.5-9.5), EDTA-4Na has a strongly alkaline reaction (pH 11.0-12.0).
- ContentEDTA-4NH₄ content ≥50%, EDTA-4Na content ≥39%
- ApplicationEDTA-4NH₄ is more suitable for applications requiring a slightly alkaline environment.
EDTA-4NH₄ solution has the following advantages:
- Ready to UseNo need for dissolution, ready to use, saves time and equipment
- Good CompatibilityLiquid form convenient for mixing with other liquid products.
- Precise calculationEasy to precisely dose and control the amount of additive
- Dust ReductionAvoids dust problems when handling solid powders
The shelf life of the product is [specify period] when stored in original sealed packaging, in a cool, dry and well-ventilated place.12 monthsStore away from direct sunlight; protect from freezing in winter.
Yes, we provide free samples for customer testing. Please contact our sales team to confirm sample quantities and shipping details.
Standard minimum order quantity is one pallet (approximately 1 ton and up). For special specifications or custom packaging requirements, please contact our sales team for details.
This product is exported to Southeast Asia, the Middle East, Europe, and other regions; provided export documents include:
- Commercial Invoice
- Packing List
- Certificate of Origin (CO)
- SDS/MSDS (Multilingual Version)
- Certificate of Analysis (COA)
- Assessment report for sea/air transport
- Other required certificates
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