[en] Highlights: • Low temperature rate constants were measured using a chemical tracer method. • The reaction of C(¹D) with NO has a negative temperature dependence. • The reaction of C(¹D) with O₂ does not display a marked temperature dependence. • Secondary reactions have a minor influence on the rate constant determination. The gas-phase reactions, C(¹D) + NO and C(¹D) + O₂ have been studied over the 50–296 K range using a Laval nozzle reactor. C(¹D) atoms were produced by CBr₄ photolysis. A tracer technique was employed to follow the kinetics by adding H₂ or CH₄ to the flow. H-atoms produced by the C(¹D) + H₂/CH₄ reactions were detected by laser-induced fluorescence. Rate constants for the C(¹D) + O₂ reaction show little variation with temperature, whereas rate constants for the C(¹D) + NO reaction increase rapidly below 100 K. Numerical simulations were performed to evaluate the influence of secondary reactions.