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Indole-3-acetic acid
Also known as: IAA, β-Indoleacetic acid
As the primary natural endogenous auxin, indole-3-acetic acid (IAA) offers the key advantage of comprehensively regulating plant growth and development, powerfully promoting cell elongation, differentiation, and vascular bundle development. Furthermore, it plays a pivotal regulatory role in governing apical dominance, stimulating root formation, and inducing fruit development.
Technical specifications
- Product Name
- Indole-3-acetic acid
- Other Names
- IAA, β-Indoleacetic acid
- Appearance
- White to Off -White Powder
- Assay
- 98%
- CAS No.
- 87-51-4
- Molecular formula
- C10H9NO2
- Molecular weight
- 175.18
Package
25kg Drum
Key benefits
- Cell Promotion Indole-3-acetic acid (IAA) powerfully promotes cell elongation and differentiation, serving as the primary driver of plant height and tissue development.
- Root Induction It significantly stimulates the formation of adventitious and lateral roots, acting as a key hormone for successful rooting and improved transplant survival rates.
- Organ Regulation It governs apical dominance and effectively induces fruit development while regulating the abscission of leaves and fruit.
Suggested dosage & application
- For Formulators & Manufacturers As a 98% Technical Grade concentration, this product must be formulated before broad field application. Solubility: IAA 98% TC is soluble in ethanol, methanol, or acetone, but poorly soluble in water. For direct water solubility, manufacturers often use Potassium Indole-3-acetate (IAA-K) to formulate commercial 2%/5% SP or 0.11% SL. Formulation Note: Maintain an acidic pH level (ideally between 5.0 to 6.5), as IAA degrades rapidly in alkaline environments. Due to its high sensitivity to light, formulations must use light-shielding packaging (e.g., black bottles or aluminum foil).
- Reference Field Application Rates For standard foliar spraying, the general field application dosage ranges from 10 to 20 mg/L (ppm), depending on the specific growth stage and target response. For Rooting & Cutting: Soak basal ends in a 20 to 50 mg/L solution for 2 to 6 hours, or use a quick-dip at 500 to 1000 mg/L for 5 to 10 seconds. For Seedlings & Transplanting: Soak bare roots in a 10 to 25 mg/L solution for 1 to 2 hours before planting to enhance survival rates.
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