Disodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na2)
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. It can form six-ring chelating compounds with metal ions in water system, Ca2+ in particular. It has good scale inhibition effects and obvious dissolution threshold effects. When used with other Water Treatment Chemicals, the synergistic effects is better.
CAS No. 7414-83-7
Molecular Formula: C2H6O7P2Na2 Molecular weight: 250
Structural Formula:
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 | — | 20 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
HEDP·Na2 protective measures:
When working with HEDP·Na2 (Hydroxyethylidene Diphosphonic Acid Disodium Salt), it is crucial to take appropriate protective measures to ensure safety. Here are some protective measures to consider:
- Personal Protective Equipment (PPE): Wear suitable PPE, including gloves, goggles or a face shield, and a lab coat or protective clothing, when handling HEDP·Na2. This will help protect your skin, eyes, and clothing from potential contact or splashes.
- Ventilation: Work in a well-ventilated area to minimize the inhalation of any fumes or vapors that may be released during handling or mixing. If necessary, use local exhaust ventilation or respiratory protection devices to further control exposure.
- Avoid Contact: Avoid direct skin contact with HEDP·Na2. In case of accidental contact, promptly wash the affected area with plenty of water. If irritation persists, seek medical attention.
- Spill Response: In the event of a spill or leak, contain the material and prevent it from spreading. Use appropriate absorbent materials, such as sand or vermiculite, to clean up the spill. Dispose of the contaminated material according to local regulations.
- Storage: Store HEDP·Na2 in a cool, dry, and well-ventilated area away from incompatible substances, such as oxidizing agents, acids, and alkalis. Keep the container tightly closed when not in use to prevent accidental spills or exposure.
- Handling and Mixing: Follow proper handling procedures when working with HEDP·Na2. Avoid generating dust or aerosols. When mixing or diluting the chemical, add HEDP·Na2 to the water slowly and carefully, while stirring or agitating the solution. Never add water to the powder directly, as this can cause splattering.
- Emergency Preparedness: Familiarize yourself with the emergency procedures outlined in the Safety Data Sheet (SDS) provided by the manufacturer. Have emergency eyewash stations, safety showers, and spill response materials readily available in case of accidents or exposure.
- Training and Awareness: Ensure that all personnel working with HEDP·Na2 receive proper training on its safe handling, storage, and disposal. Regularly review safety protocols and maintain awareness of potential hazards associated with the chemical.
Always consult the manufacturer’s guidelines, follow local regulations, and seek expert advice to ensure the safe handling of HEDP·Na2.