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We have measured reflectance spectra (0.35-20 mu m) of a suite of minerals and synthetic compounds that contain low-Z (<= Na) elements as the major cation and/or the major anion in oxides/oxyhydroxides, and are relevant to planetary geology and astrobiology. The suite comprises Na-borates, Na-, K-, Ca-hydroxides, nitrates, nitrites, and peroxides. Na-borate spectra exhibit B-O fundamental vibrations between 7 and 14 mu m, and overtones/combinations of these bands in the 1.55, 1.75, 2.15, and 2.25 mu m regions. Na-, K-, and Ca-hydroxide reflectance spectra are characterized by OH and metal-OH fundamental vibrations near 3, 8, and 18 mu m, and a number of overtone and combination absorption bands at shorter wavelengths, and a characteristic metal-OH band near 2.35 mu m. The nitrate and nitrite spectra exhibit fundamental N-O vibrations in the 7-14 mu m region and numerous combinations and overtones that are still detectable to as low as similar to 1.8 mu m. Na-peroxide is largely spectrally featureless below 24 mu m, making its detection problematic, while H-peroxide has many OH-related absorption features below 2.5 mu m that differ in position from those of H2O ice and liquid. The results of this study indicate that the borates, hydroxides, nitrates, nitrite, and hydrogen peroxide can all be uniquely identified using characteristic absorption features that are present below 2.5 mu m. However, some of these features are weak, and their detectability will depend on the types and abundances of any accessory phases that may be present. (C) 2015 Elsevier Inc. All rights reserved.