3-Indoleacetic acid is a potent growth enhancer for lower plant species, produced by various fungi, including yeast, and has been isolated from organisms like Aspergillus niger and Rhizopus sp. It is widely used in both horticulture and industrial applications.
Parameters
| Melting point | 165-169 °C (lit.) |
| Boiling point | 306.47°C (rough estimate) |
| density | 1.1999 (rough estimate) |
| bulk density | 620kg/m3 |
| refractive index | 1.5460 (estimate) |
| Fp | 171°C |
| storage temp. | -20°C |
| solubility | DMSO:30.0(Max Conc. mg/mL);171.25(Max Conc. mM) |
| pka | 4.75(at 25℃) |
| form | crystalline |
| color | off-white to tan |
| Water Solubility | Soluble in ethanol (50 mg/ml), methanol, DMSO, and chloroform (sparingly). Insoluble in water. |
| Decomposition | 167 ºC |
| Sensitive | Light Sensitive |
| Merck | 14,4964 |
| BRN | 143358 |
| Stability: | Stable. Incompatible with strong oxidizing agents. Light sensitive. |
| LogP | 1.410 |
| CAS DataBase Reference | 87-51-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Indole-3-acetic acid(87-51-4) |
| EPA Substance Registry System | Indole-3-acetic acid (87-51-4) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 22-24/25 |
| WGK Germany | 3 |
| RTECS | NL3150000 |
| F | 8-10-23 |
| Hazard Note | Irritant |
| TSCA | Yes |
| HS Code | 29339990 |
| Toxicity | LD50 intraperitoneal in mouse: 150mg/kg |
Indole-3-acetic acid (IAA, CAS#87-51-4) is a natural plant auxin primarily utilized in agriculture to stimulate root growth in cuttings, extend the shelf life of flowers and fruits, and regulate plant growth and fruit development. Additionally, it plays a key role in horticultural tissue culture, plant stress resistance management, and research into plant physiological mechanisms. It is important to control the application concentration to prevent inhibiting plant growth.
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