This data set corresponds to the experiments appearing in the article "Methanol Formation via Oxygen Insertion Chemistry in Ices" (Bergner, Oberg, & Rajappan, The Astrophysical Journal, 2017, 845:29). Please refer to the article for experimental details & methods. The data set consists of infrared spectra from 600-4000 wavenumbers. Each file contains the spectra taken for a single experiment. The first column holds the spectrum wavenumber values, and all subsequent columns hold the IR absorbance values for spectra taken during ice irradiation. The first row lists column headings, including the time increments (in minutes) of the irradiation spectra. File names are formatted: "IR_N.txt" where N corresponds to the Experiment # listed in Table 1 of the corresponding article. All details about the experiment (irradiation temperature, ice composition) can be retrieved from Table 1.