Indole-3-Butyric acid CAS 133-32-4,Indole-3-Butyric acid, CAS 133-32-4
Indole-3-butyric acid (IBA), as an efficient rooting agent and plant growth regulator, is widely used in agricultural seedling raising, horticultural cultivation and scientific research.
133-32-4
C12H13NO2
203.24
205-101-5
| CAS | 133-32-4 |
| Molecular formula | C12H13NO2 |
| Molecular weight | 203.24 |
| EIENCS | 205-101-5 |
| Form | Liquid |
| Melting point | 124-125.5 °C |
| boling point | 341.55°C |
| Density | 360kg/m3 |
| Solubility | |
| PKA | 4.83±0.10(Predicted) |
| Color | Clear colorless to pale yellow |
| Storage temp |
Basic information
Molecular formula: C₁₂H₁₃NO₂, molecular weight 203.24.
Appearance: White to light yellow crystalline solid. The melting point of pure product is 124-125℃, while that of industrial grade is 121-124℃.
Solubility: Insoluble in water (50-250 mg/L at 20℃), readily soluble in organic solvents (such as ethanol, acetone, ether, benzene), slightly soluble in chloroform.
Stability: Stable in neutral or acidic media, but prone to decomposition when exposed to strong oxidants or alkalis. Toxic gases (nitrogen oxides, CO) may be released at high temperatures (>200℃) or under open flames.
Indole-3-butyric acid (IBA), as an efficient rooting agent and plant growth regulator, is widely used in agricultural seedling raising, horticultural cultivation and scientific research. Its safe use must strictly follow the concentration regulations (such as 50-100 mg/L for woody plants) and be equipped with protective measures to avoid health and environmental risks.
Plant growth regulation
Rooting promotion: Induce the formation of adventitious roots in cuttings of woody/herbaceous plants (such as grapes, roses, kiwifruits), and increase the survival rate of transplanting.
Immersion method: Soak the base at 50-300 mg/L for 6-24 hours (use a lower concentration for easy root growth and planting).
Quick dipping method: Dip at 500-1000 mg/L for 5-10 seconds (for difficult-to-grow seeds such as peaches and pears).
Dipping powder method: Mix potassium indolebutyrate with talcum powder, dip the base of the cutting in powder, and then insert it.
Seed treatment
Woody plants: Soak seeds at 100 mg/L; Herbaceous plants: Soak or mix seeds at a concentration of 10-20 mg/L.
Promote fruit setting
Spray flowers (250 mg/L) on crops such as tomatoes and strawberries to increase the rate of monotypic seed setting.
2. Research and industrial applications
Tissue culture: High concentration promotes the proliferation of tissue culture seedlings.
Synthetic intermediates: Used for the preparation of other plant hormones (such as indole-acetic acid IAA) and raw materials for pharmaceuticals/pesticides
Health and environmental risks
Toxicity
Acute oral toxicity (mice) : LD₅₀ = 100 mg/kg; Oral LD₅₀ = 3160 mg/kg in rats.
Irritation and sensitization: Mild irritation to the skin of rabbits and moderate irritation to the eyes. Guinea pig skin has weak sensitization.
Ecological impact
It is highly toxic to aquatic organisms (48h LC₅₀ = 180 mg/L for carp), degrades rapidly in soil, and shows no significant bioaccumulation.
Operation and storage specifications
Protective requirements: Wear chemical protective gloves, goggles and dust masks during operation to avoid inhaling dust or skin contact.
Storage conditions: Keep away from light and sealed. Temperature: 2-8℃. Keep away from strong oxidants, alkalis and heat sources.
Transportation label: UN 2811, packaging category II. "Toxic" label must be affixed. It is strictly prohibited to transport together with food.
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