What is the activation energy for the hydrolysis of methyl formate?

The uncatalyzed reaction has an activation energy estimated at 5.44 kJ/mol, but this is a largely meaningless figure for practical purposes because when we manufacture formic acid we always catalyze the reaction. In fact, the reaction autocatalyzes--once you get enough formic acid in the solution, the formic acid acts as a catalyst and activation energy to make more of it decreases.

In practice, there are a variety of reaction procedures used which often involve different catalysts, so I can't give you a precise figure for their activation energies.

What I can tell you is that all the standard methods of producing formic acid involve autocatalyzed hydrolysis of methyl formate at temperatures between 80 and 140 °C and pressures between 3 and 18 bar.