Trimethyl Phosphite (TMPi)
CAS # 121-45-9

Trimethyl Phosphite (P(OMe)₃) is a colorless, pungent liquid organophosphorus compound with the molecular formula C₃H₉O₃P. It is widely used as a reagent and intermediate in organic synthesis, particularly in the pharmaceutical, agrochemical, and polymer industries. To meet varying industry requirements, the product is offered in three distinct grades: Pharma Grade, which features high purity and low metal content suitable for sensitive pharmaceutical processes; Agrochemical Grade, designed with high purity for use in crop protection formulations; and Stabilizer Grade, which offers standard purity for general industrial applications.
Key chemistry
PHOSPHORUS DERIVATIVES
Short Names
TMPi
Synonyms
Methyl Phosphite, Phosphorous Acid, Trimethoxyphosphine, Trimethyl Ester, Trimethyl-phosphite
Applications
Herbicides | Insecticides | Fungicides | OBAs | Char Forming Enhancer | Lubricants | Greases | Engine Oils | Hydraullic Fluids | Aviation | Solvent Extraction | Froth Floation Collectors | Fatliquoring | Flame Retardants | Syntan Agent | Polyurethanes
Industries
Agriculture, Dyes, Textiles & OBAs, Other industries, Pharmaceuticals, Lubricants, Oil & Gas, Flame Retardants
Grades
Pharma Grade, Agrochemical Grade, Stabilizer Grade
Packaging
200 kg HDPE, ISO tanks
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