can't read?
Tetrabutylammonium perchlorate (TBAP) is a quaternary ammonium salt, mainly used as electrolyte.(End user certificate required)
T 1339 (OTTO) Tetrabutylammonium perchlorate, 99% Cas 1923-70-2 - used as solvent in preparing standard stock solutions, for HPLC analysis of sudan compounds from food samples.