A white, water-soluble solid, it is used as a chemical shift standard for proton NMR spectroscopy of aqueous solutions. The chemical shift, specifically the signal for the trimethylsilyl group, is relatively insensitive to pH.
A white, water-dissolvable solid, it serves as a reference point for proton NMR spectroscopy of aqueous solutions. The chemical shift, specifically the signal from the trimethylsilyl group, remains relatively unaffected by pH variations.