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Organic Acids

Indole-3-acetic acid

CAS: 87-51-4

Overview

Indole-3-acetic acid ( CAS 87-51-4 ), commonly abbreviated as IAA, is the primary naturally occurring auxin. This class of plant growth hormones regulates cell elongation, root initiation, and developmental responses across virtually all plant species.

In commercial practice, it functions as a rooting agent and plant growth regulator in agricultural and horticultural applications. IAA is used in propagation programs to stimulate adventitious root formation in cuttings.

This reduces establishment time for ornamental, fruit, and forestry crops. In agricultural research and crop science, it serves as a reference standard for auxin activity studies and plant hormone quantification assays.

Pharmaceutical and biochemical manufacturers source IAA as an intermediate or reference compound in synthesis workflows targeting indole-derived molecules. It is a critical component for many laboratory applications.

Cosmetic formulators have incorporated it into scalp and hair care formulations targeting follicle stimulation. Its plant-derived origin supports naturals-positioning claims for high-end personal care products.

Indole-3-acetic acid is supplied as a white to off-white crystalline powder. It is available in technical grade for agricultural and research use, as well as high-purity grades meeting specific requirements.

Our material meets the specifications required by pharmaceutical and analytical customers. Packaging ranges from small research quantities to bulk orders to suit various industrial and laboratory needs.

Storage recommendations typically specify cool, dry conditions to maintain stability over time. We ensure that all batches are tested to meet rigorous quality and purity standards for our global clients.

Contact us for supply of Indole-3-acetic acid

Physical Properties

Melting Point168.5 °C
Boiling Point306.47°C (rough estimate)
Density1.576 g/cm³
Flash Point171°C
Appearancewhite to tan crystals
Coloroff-white to tan
Formcrystalline
Water SolubilitySoluble in ethanol (50 mg/ml), methanol, DMSO, and chloroform (sparingly). Insoluble in water.
Refractive Index1.5460 (estimate)
Log P1.410

Safety & Handling

Warning GHS07 Hazard Statements H302 H302 H315 H315 H319 H319 H335 H335 Precautionary Statements P261 P261 P264 P264 P270 P270 P271 P271 P280 P280 P319 P319 P321 P321 P330 P330 P405 P405 P501 P501 P264+P265 P264+P265 P301+P317 P301+P317 P302+P352 P302+P352 P304+P340 P304+P340 P332+P317 P332+P317 P337+P317 P337+P317 P362+P364 P362+P364 P403+P233 P403+P233 P305+P351+P338 P305+P351+P338

Trade & Regulatory

HS Code29339990
Storage Class11 - Combustible Solids
WGK (Germany)3

Other Names

Rhizopin | Kyselina 3-indolyloctova | indoxyl acetic acid | Indolylacetic acid | Indolyl-3-acetic acid | Indolyl-3-acetate | Indole-3-acetate | Indol-3-ylacetate | IAA

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Chemical Properties

CAS Number
87-51-4
EC Number
201-748-2
Mol. Weight
175.18
HS Code
29339990

Industries

Documentation