Indole-3-Butyric Acid

Endogenous Plant Growth Regulatory Hormone – Indole-3-Butyric Acid is a vital naturally occurring plant hormone that systematically modulates plant growth rhythms and developmental cycles. It coordinates multiple physiological activities to maintain healthy and orderly vegetative and reproductive growth of crops and ornamental plants.

Efficient Auxin Physiological Activity – Classified as a key auxin compound, IBA features prominent biological activity in stimulating cell elongation and accelerating root tissue differentiation. Its targeted physiological effect makes it a superior rooting agent for plant propagation and seedling cultivation.

Product Description

Indole-3-Butyric Acid (IBA) is a high-efficiency, broad-spectrum indole-based plant growth regulator widely recognized in modern horticulture and agricultural cultivation. Differing from common growth promoters, it focuses on inducing root system development and optimizing plant reproductive growth, serving as an indispensable auxiliary agent for seedling breeding and fruit tree management.

The compound exhibits excellent rooting induction performance for various plant cuttings, covering both herbaceous foliage plants and woody ornamental varieties. It effectively accelerates the formation of adventitious roots, improves cutting survival rate, and promotes robust seedling root system development. Beyond rooting promotion, IBA plays a significant role in optimizing crop and fruit tree fruiting performance. It stabilizes flower and fruit retention, reduces physiological fruit drop, and effectively elevates the overall fruit setting rate, helping growers improve yield and planting benefits

Indole-3-Butyric Acid

Product Parameters

Melting point 124-125.5 °C(lit.)
Boiling point 341.55°C (rough estimate)
density 1.1255 (rough estimate)
bulk density360kg/m3
refractive index 1.5440 (estimate)
storage temp. 2-8°C
solubility DMF: 25 mg/mL; DMSO: 25 mg/mL; Ethanol: 25 mg/mL; PBS (pH 7.2): 0.1 mg/mL
pka4.83±0.10(Predicted)
form Liquid
color Clear colorless to pale yellow
Water Solubility Soluble in water(0.25g/L).
Sensitive Air Sensitive
Merck 14,4965
BRN 171120
Stability:Stable. Incompatible with strong oxidizing agents. Light sensitive.
InChIKeyJTEDVYBZBROSJT-UHFFFAOYSA-N
LogP2.300
CAS DataBase Reference133-32-4(CAS DataBase Reference)
EPA Substance Registry SystemIndole-3-butyric acid (133-32-4)

Safety Information

Hazard Codes T,Xi
Risk Statements 25-36/37/38
Safety Statements 26-36-45-38-36/37/39-28A
RIDADR UN 2811 6.1/PG 3
WGK Germany 3
RTECS NL5250000
8-10-23
Hazard Note Irritant
TSCA T

Application Advantages

With natural metabolite characteristics and stable chemical activity, IBA boasts higher safety and better application adaptability compared with synthetic regulators. It is widely applicable in seedling breeding, garden landscaping, economic crop cultivation and fruit tree management, providing reliable and efficient technical support for refined and high-yield agricultural production.

Indole-3-Butyric Acid

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