Indole-3-Acetic Acid CAS# 87-51-4

Name: Indole-3-acetic acid, abbreviated as IAA, is a plant growth hormone.
Molecular weight: 175.18.
Appearance: White crystalline powder.
Melting point: 165 – 169℃.
Solubility: Easily soluble in organic solvents such as ethanol, ether, acetone, slightly soluble in water, its aqueous solution can be decomposed by ultraviolet light, but stable to visible light.
Physiological effects (in plants)
Growth promotion: It is a type of plant growth hormone that can promote cell elongation growth. It achieves this function by increasing the plasticity of the cell wall, allowing plant cells to elongate irreversibly to a certain extent, thereby leading to the elongation of plant stems, roots and other organs. For example, in the seedling stage of plants, IAA can promote the rapid elongation of stems, allowing plants to better obtain sunlight.