Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4)
HEDP•Na4 is the sodium salt of HEDP, It 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.HEDP·Na4 is biodegradable, meaning it can be broken down by natural processes in the environment. It is also considered environmentally friendly and does not contribute to persistent pollution.
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℃.
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.
CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na) Synonyms: Tetrasodium etidronate
Molecular Formula: C2H4O7P2Na4 Molecular weight: 294
Structural Formula:
Specification:
| Items | Index | ||
|---|---|---|---|
| Appearance | White powder | Colorless to yellowish transparent liquid | |
| Active content (HEDP), % | 56.0 min | 60.0 min | 20.3-21.7 |
| Active content (HEDP•Na4), % | 80.0 min | 85.0 min | 29.0-31.0 |
| Fe, mg/L | 35.0 max | 35.0 max | 20.0 max |
| Moisture, % | 15.0 max | 10.0 max | — |
| Density (20℃), g/cm3 | — | — | 1.26-1.36 |
| pH (1% water solution) | 10.0-12.0 | 10.0-12.0 | 10.0-12.0 |
Package and Storage:
Liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
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:
Tetrasodium (1-hydroxyethylidene)bisphosphonate
HEDP·Na4 protective measures:
When working with HEDP·Na4 (Hydroxyethylidene Diphosphonic Acid Tetrasodium Salt), it is important 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·Na4. 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·Na4. 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·Na4 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·Na4. Avoid generating dust or aerosols. When mixing or diluting the chemical, add HEDP·Na4 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·Na4 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·Na4.