Location: 
Last:
Return list
Service Hotline
+86-13153039501
+86-13153039501
+86-13153039501
Indole-3-Acetic Acid (IAA) is a major auxin naturally present in plants. It mainly promotes cell elongation and division, and regulates root development, fruit ripening, and leaf abscission. As a rooting agent, it is widely used in seedlings, cutting propagation, and hydroponic plants to improve rooting rate and survival rate.
Ingredient Content:3-Indoleacetic Acid 98%/0.1% SL
Product Appearance:Light yellow crystalline powder
Update Time:2025-08-13
Visit Volume:29
Service Hotline
+86-13153039501
Product
Blog
Chemical Name: 3-Indoleacetic Acid
CAS No.: 87-51-4
Molecular Formula: C₁₀H₉NO₂
Molecular Weight: 175.18
Indole-3-Acetic Acid (IAA) is the most important natural auxin in higher plants, regulating plant growth and development. It stimulates cell elongation, root initiation, callus induction, fruit setting, and ripening, while also delaying leaf abscission.
Because of its strong rooting effect, IAA is widely used in seedling propagation, hydroponics, tissue culture, ornamental plants, forestry, and fruit trees.
IAA is often used alone or in combination with other plant growth regulators such as Indole-3-Butyric Acid (IBA) and Naphthaleneacetic Acid (NAA) for synergistic effects.
| Application | Recommended Concentration | Benefits | Method |
|---|---|---|---|
| Seedling and cuttings | 50–100 mg/L | Stimulates root initiation, improves survival | Root dipping / spraying |
| Hydroponics | 10–30 mg/L | Induces rooting and enhances nutrient uptake | Soaking in nutrient solution |
| Fruit tree grafting | 30–50 mg/L | Promotes callus formation and graft healing | Brushing / spraying |
| Tissue culture | 0.1–5 mg/L | Induces callus and organ differentiation | Added to culture medium |
| Fruit setting (tomato, grape, citrus) | 10–20 mg/L | Improves fruit set and yield | Spraying during flowering |
Appearance: Light yellow crystalline powder
pH (1% solution): 4.5 – 6.0
Water Solubility: Slightly soluble in water; soluble in ethanol and acetone
Stability: Stable for 24 months under sealed, cool, and dry storage
Naturally occurring auxin with strong biological activity
Enhances rooting efficiency and crop propagation
Effective in vegetables, fruits, flowers, forestry, and cash crops
Compatible with other PGRs (IBA, NAA, GA₃) for synergistic use
Safe, eco-friendly, low residue, and minimal toxicity
Agriculture: Promotes crop growth, yield improvement, and stress resistance
Forestry: Increases rooting rate of tree seedlings, improves transplant success
Horticulture: Enhances propagation of ornamental plants, flowers, and shrubs
Tissue Culture: Induces callus and supports plant regeneration
Fruit Production: Improves fruit set, size, and quality in grape, citrus, tomato, strawberry
Avoid direct contact with skin, eyes, and inhalation of dust
Wear gloves and protective equipment during handling
Store in cool, dry, well-ventilated areas, away from strong acids, alkalis, and oxidizers
Shelf life: 2 years under proper sealed storage
