Tetrabromomethane functions as an organic catalyst for non-redox reactions of carbonyl species and, in particular, it enhances the aldehyde–acyl hydrazide condensation to give N-acyl hydrazones. This simple, inexpensive, and commercially available halomethane provides up to 14-fold acceleration of the Schiff reaction; the kinetic data indicate that the studied condensation exhibits the first order on CBr₄. The catalytic activity of CBr₄ is significantly higher than the activity of other halogen-containing species, such as CHX₃ or ArX (X = Cl, Br, I).