Pure IAA is colourless crystal, and turns to rose color when exposed to light. Melting ponit 168169°C, slight soluble in water, easily dissovle in ethyl acetate, unstable in acid and water solution.
Indoleacetic acid (IAA) is a kind of indole broad-spectrum plant
growth regulator with somatotropin activity. 1.It can be used on adventitious root formation, such as tea tree, pepper and so on. 2.It can promote fruitsetting, fruitenlargement, yield- increasing, such as sugar beet, tomato, cornpotato. 3. IAA can promote sprout, seedsoaking, such as rice, cotton, potato, eggplant.