| | Identification | More |  | [Name] 
 INDOLE-3-ACETIC ACID
 |  | [CAS] 
 6505-45-9
 |  | [Synonyms] 
 (1H-INDOL-3-YL)-ACETIC ACID
 1H-INDOLE-3-ACETIC ACID
 2-(1H-INDOL-3-YL)ACETIC ACID
 3-INDOLEACETIC ACID
 3-INDOLYLACETIC ACID
 AKOS NCG1-0097
 HETERAUXIN
 HETEROAUXIN
 HETEROAUXINE
 HETEROAUXIN SODIUM SALT
 IAA
 IAA SODIUM SALT
 INDOL-3-YLACETIC ACID
 INDOLE-3-ACETIC ACID
 INDOLE-3-ACETIC ACID SODIUM SALT
 INDOLEACETIC ACID
 INDOLYL-3-ACETIC ACID
 JAA
 LABOTEST-BB LT00044476
 RARECHEM AL BO 0204
 |  | [EINECS(EC#)] 
 201-748-2
 |  | [Molecular Formula] 
 C10H9NO2
 |  | [MDL Number] 
 MFCD00005636
 |  | [Molecular Weight] 
 175.18
 |  | [MOL File] 
 6505-45-9.mol
 | 
 | Chemical Properties | Back Directory |  | [Definition] 
 A plant hormone.
 |  | [Appearance] 
 Crystals.The natural material is levorotatory, specific rotation ?3.8
degrees in alcohol (20C). Insoluble in water and
chloroform; soluble in alcohol and ether.
 |  | [Melting point ] 
 165-169 °C(lit.)
 |  | [Fp ] 
 171 °C
 |  | [storage temp. ] 
 −20°C
 
 |  | [solubility ] 
 H2O: soluble
 
 |  | [form ] 
 crystalline
 
 |  | [color ] 
 off-white to tan
 
 |  | [Water Solubility ] 
 H2O: soluble
 |  | [Stability:] 
 Hygroscopic
 |  | [Uses] 
 Agriculture and horticulture, growth-promoting
hormone, plant cell enlarger.
 |  | [CAS DataBase Reference] 
 6505-45-9(CAS DataBase Reference)
 | 
 | Safety Data | Back Directory |  | [Hazard Codes ] 
 Xi
 |  | [Risk Statements ] 
 R36/37/38:Irritating to eyes, respiratory system and skin .
 |  | [Safety Statements ] 
 S22:Do not breathe dust .
 S24/25:Avoid contact with skin and eyes .
 |  | [WGK Germany ] 
 3
 
 |  | [RTECS ] 
 NL3150000
 
 |  | [F ] 
 8-10-23
 |  | [HazardClass ] 
 IRRITANT
 | 
 | Hazard Information | Back Directory |  | [Chemical Properties] 
 Crystals.The natural material is levorotatory, specific rotation ?3.8
degrees in alcohol (20C). Insoluble in water and
chloroform; soluble in alcohol and ether.
 |  | [Synthesis Reference(s)] 
 Journal of the American Chemical Society, 74, p. 3916, 1952 DOI: 10.1021/ja01135a061
 Organic Syntheses, Coll. Vol. 5, p. 654, 1973
 |  | [General Description] 
 
 Indole-3-acetic acid is a plant growth regulator. Indole-3-acetic acid induces cell division and cell elongation that promotes plant growth. |  | [Biological Activity] 
 Indole-3-acetic acid (IAA) is a plant growth regulator.  Indole-3-acetic acid induces root initiationcell divisionand cell elongation which promotes plant growth.  It mediates organ developmentfertilitycell orientationand elongation. Overproduction of IAA is found to trigger ethylene production and therefore inhibit plant growth. In additionup-regulation of IAA by pathogenic bacteria causes excess cellular division leading to gall disease in the plant.
 | 
 |  |