Storage-stable formulations

A storage-stable powderous formulation comprising

• (i) At least 0.1 weight-% (wt-%), based on the total weight of the powderous formulation, of a compound of formula (I)
• wherein
• n is an integer from 1 to 15
• R1 is selected from the group consisting of H, C1-C6alkyl, phenyl, —OH, —NH2, —CN, —COOH, —O(C═O)R8, —NHC(═O)R8, SO2NHR8, and —ONO2, and
• R8 is C1-C6alkyl, phenyl, pyridyl such as preferably 2-pyridyl
• with the proviso that when n is >3 the hydrocarbon chain may be interrupted by —O— or —NH—.
• (ii) 0 to 40 wt-%, based on the total weight of the powderous formulation, of an edible solvent, and
• (ii) at least 25 wt-%, based on the total weight of the powderous formulation, of silica having a particle size D(v, 0.5) of ≤320 μm.