hydroxide in water T=25°C; var. reag.: Tris, KCl (pH 9), cetyltrimethylammonium chloride, H2PO4(1-) (pH 8), iodosobenzoate, iodosonaphthoate, monoperoxyphthalate, Cu complex N-hexadecyl-N,N',N'trimethylethylenediamine; Eu(3+), <2.2.1>cryptate; Rate constant;