Etidronate
Overview
Etidronate, also known as etidronic acid or HEDP, is a phosphonic acid derivative widely used in industrial applications. It belongs to the bisphosphonate family and is valued for its strong chelating properties. The compound is particularly effective in controlling scale formation and inhibiting corrosion in water systems. Etidronate is synthesized through the reaction of phosphorus trichloride with acetic acid. Its molecular structure allows it to form stable complexes with metal ions, making it a versatile chemical in various industrial processes. The compound is commercially available in both solid and liquid forms.
Physical and Chemical Properties
Etidronate appears as a white crystalline powder with a molecular weight of 206.03 g/mol. It is highly soluble in water, which makes it suitable for aqueous applications. The compound exhibits stability under normal conditions but may decompose at high temperatures or in the presence of strong oxidizers. One of the key properties of etidronate is its ability to chelate metal ions such as calcium, magnesium, and iron. This characteristic is crucial for its effectiveness as a scale inhibitor. The compound also shows good thermal stability and resistance to hydrolysis, making it suitable for use in high-temperature environments.
Main Applications
The primary application of etidronate is in water treatment systems, where it serves as an effective scale and corrosion inhibitor. It is commonly used in cooling towers, boilers, and reverse osmosis systems. The compound's ability to sequester metal ions helps prevent the formation of scale and protects metal surfaces from corrosion. Etidronate is also used in the oil and gas industry as a component of drilling fluids and fracturing fluids. Additionally, it finds application in industrial cleaning formulations and as a stabilizer in hydrogen peroxide solutions. Its versatility and effectiveness make it a valuable chemical in various industrial sectors.
Safety and Storage
Etidronate is generally considered safe when handled properly, but precautions should be taken to avoid inhalation or direct contact with skin and eyes. Personal protective equipment, including gloves and goggles, is recommended when handling the chemical. The compound should be stored in a cool, dry place away from strong oxidizers and incompatible materials. In case of accidental exposure, affected areas should be rinsed thoroughly with water. While etidronate is non-toxic at recommended concentrations, excessive exposure may cause irritation. Proper ventilation should be maintained in areas where the chemical is used or stored.
B2B Procurement Guide
When procuring etidronate for industrial use, buyers should pay attention to the product's purity and concentration specifications. The CAS number (2809-21-4) should be verified to ensure product authenticity. It is advisable to request technical data sheets and certificates of analysis from suppliers. Bulk purchasing can offer cost advantages, as prices typically range from $5 to $15 per kilogram depending on quantity and purity. Buyers should also consider the form of the product (powder or liquid) based on their application requirements. Establishing long-term relationships with reputable suppliers can ensure consistent quality and reliable supply.
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