Description General description Tetrabutylammonium hydroxide is a quaternary ammonium salt mainly used as a strong base and phase-transfer catalyst. Application Tetrabutylammonium hydroxide solution (1M in methanol) may be used as a base to synthesize ring methyl and methylene deuteriated porphyrins and metalloporphyrins. It may also be used as an initiator of graft polymerization between pivalolactone and poly(ethylene-co-vinyl acetate-co-methacrylic acid). Packaging 1 L in Sure/Seal™ 100, 4×100, 250, 800 mL in Sure/Seal™ View returnable container options.