In-Depth Product Overview & Functional Mechanism
Indole-3-Acetic Acid (IAA, CAS: 87-51-4) is a classic naturally occurring auxin substance with significant regulatory effects on plant physiological metabolism. Primarily sourced from fungal biosynthesis, it features mild activity, high biological compatibility and no excessive chemical residue, making it a preferred growth regulator in green agricultural production.
In agricultural and horticultural practice, IAA is widely adopted for rooting induction of plant cuttings, effectively improving rooting rate and seedling survival rate. It also optimizes the growth rhythm of crops and fruit trees, regulates fruit development, and remarkably prolongs the fresh-keeping period of flowers and fruits. Furthermore, it plays an irreplaceable role in plant tissue culture, crop stress resistance improvement, and plant physiology mechanism research.
Application Notes
Although IAA delivers prominent growth-promoting effects, its biological activity is highly concentration-dependent. Reasonable dosage control during application is essential. Excessively high concentrations will reverse its regulatory effect and cause growth inhibition, ensuring standardized and precise use for optimal planting outcomes.
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 |
Company Profile
Laisen New Materials (Shandong) Co., Ltd. is a Jinan-based enterprise dedicated to the research, supply, and service of fine chemicals and advanced functional materials. The company provides comprehensive solutions through chemical product supply, technical support, and international business services.
With nearly 10 years of experience in the chemical industry, Laisen has built a product portfolio covering specialty chemical products, polymer additives, functional raw materials, and new building material solutions. Its products are widely used in new energy, coatings, plastics, rubber & plastics, construction, and environmental protection industries.
Laisen operates with a strong focus on product quality and technical capability, supported by a professional team and effective quality management system. The company assists customers with material selection, application guidance, formulation support, and customized supply-chain services.
Having served more than 500 industrial customers worldwide, Laisen’s products are exported to over 50 countries and regions across Asia, Europe, the Americas, Africa, and Oceania. The company continues to build reliable partnerships by providing consistent products and professional services to global customers.
