a) Acid base indicators
- Bromphenol red (yellow-violet-red)
- 3’,3”- Dibromphenolsulfophtalein, C19H21Br2O5S,
- Bromphenol red, water-soluble (yellow-violet-red)
- 3’,3” Dibromphenolsulfophtalein ammonium salt
- Bromphenol blue, pfa (yellow – blue) M.w.669,96
- 3’, 3”, 5’, 5”- Tetrabromphenolsulfophthalein, C19H10Br4O5S
- Bromphenol blue, water-soluble (yellow – blue)
- 3’, 3”, 5’, 5”- Tetrabromphenolsulfophthalein ammonium salt
- Cresol red, pfa (yellow –пурпурно-red)
- о- Cresolsulfophthalein C21H18O5S, M.w. 382,44
- Cresol red, water-soluble, pfa о- Cresolsulfophthalein ammonium salt C21H21NO5S, M.w. 399,43
- Methyl orange, pfa (red-yellow)
- Lacmoid, pfa (red-yellow) Resocrin blue
- Thymol blue, pfa (red – yellow, yellow- blue),
- Thymolsulfophthalein C27H30O5S×1/2Н2О, M.w. 475,60
- Thymol blue, water-soluble, pfa (red – yellow, yellow- blue)
- Thymolsulfophtalein ammonium salt
- Tropaeolin O, pfa (yellow – orange) (Acid orang 6)
- 2’,4’- Dioxyasobensol-4-sulfoacid sodium salt
- Phenol red, pfa (Yellow-red)
- Phenol red, water-soluble, pfa (Yellow-orange-intensively pink) Sodium salt
b) Analytical reagents
- 1,5- Diphenilcarbaside, pfa (adsorption indicator)
- M.w. 242,28; C13H14ОN4
- p-(Dimethylamino) benzaldehyde
- Dimethylsulphone
- Pyrogallol A (1,2,4-Triacetoxybenzene)
- Fisher's reagents;
- 2,3,5-Triphenyltetrazoliumchloride