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Overview
Phosphites are inorganic esters of phosphorous acid, widely utilized as stabilizers and antioxidants. The primary synthesis involves reacting phosphorus oxychloride with alcohols or metal oxides. Common forms include Sodium Phosphite (CAS 7681-54-9) and Triphenyl Phosphite (CAS 102-85-2).
Application
- PVC stabilization to prevent thermal degradation during processing.
- Agricultural fungicides targeting powdery mildew and blight.
- Water treatment for oxygen scavenging in boiler systems.
- Organic synthesis catalysts for Wittig-type reactions.
Precautions
Store in cool, dry, well-ventilated areas away from oxidizers. Use PPE including gloves and goggles; avoid inhalation of dust. Not approved for direct human consumption or clinical drug formulation.