Claims
1. A process for preparing di-tert butylchloromethylphosphate of formula-1 comprising
(a) Reacting potassium di-tert-butyl phosphate with chloromethyl sulfochloride in presence of solvent, base and phase transfer catalyst
(b) Isolating di-tertbutylchlorornethylphosphate in presence of stabilizer
2. The process according to claim 1, where in the solvent is non-polar solvent, more preferably non-halogenated solvent is selected from the group consisting of n-hexane, cyclohexane, n-pentane, n-heptane, methyl-t-butyl ether, cyclopentane or mixture of them.
3. The process according to claim 1, wherein the phase transfer catalyst is selected from the group consisting of tetrabutylammonium chloride, tetrabutylammonium hydrogen Sulfate, tetrabutytphospho nium chloride, trioctylmethylammonium chloride.
4. The process according to claim 1, wherein the stabilizer is selected from diisopropyl ethylamine, tri-n-butylamine or mixture of them.
5. The storage condition according to any of the preceding claims is at 8 to -22 °C.
6. The storage condition according to claim 5 is 2-8 °C.
7. The storage condition according to claim 5 is more preferably -18 to -22 °C.