p-Toluenesulfonic Acid Monohydrate, 99+%, 500g For Research & Development Not for drug, human, animal, or food use Specifications: Appearance (Color) White Appearance (Form) Crystals Assay (Para Isomer of TSA) 99-100% Assay (TSA Monohydrate) 97-100% Assay (TSA) 88-100% Sulfuric Acid