(2H₁₀)-2-Methylpropan-2-ol is a fully deuterated analog of tert-butanol, primarily used as a specialty solvent in nuclear magnetic resonance (NMR) spectroscopy to provide a proton-free background, enabling clear observation of analyte signals. It is also employed in mass spectrometry and other analytical techniques requiring isotopic substitution. As an intermediate, it supports the synthesis of deuterated compounds for pharmaceutical research, mechanistic studies, and agrochemical development. Additionally, it functions as a stabilizer for peroxides, preventing decomposition during storage, and is used in specialized cleaning formulations and disinfectants where its solvency for organic substances and mild antimicrobial properties are beneficial. In cosmetic and personal care products, it may appear in low concentrations as a solvent or viscosity modifier, though its primary applications are in research settings due to the isotopic labeling.