Indole-3-Butyric Acid CAS#133-32-4

1.CAS Number: 133-32-4

2.Chemical Formula: C12H13NO2

3.Synonyms: 

gamma-(3-indolyl)butyricacid

kyselina4-indol-3-ylmaselina

indolyl-3-butyricacid;jiffygrow

4.Appearance: White or pale yellow crystalline powder

5.HS Code: 29339990

6.MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

Products Description

Indole-3-butyric acid belongs to the family of indol-3-yl carboxylic acids. Structurally, it is a butanoic acid carrying a 1H-indol-3-yl substituent at the 1-position. Serving as a plant hormone, plant metabolite and auxin, this compound is derived from butyric acid and represents the conjugate acid of indole-3-butyrate.

Indole-3-Butyric Acid CAS#133-32-4

Products Chemical Properties

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 crystalline powder
color White or 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
HazardClass 6.1
PackingGroup III
HS Code 29339990
Hazardous Substances Data133-32-4(Hazardous Substances Data)
ToxicityLD50 i.p. in mice: 100 mg/kg (Anderson)

Products Application

Indole-3-butyric acid (IBA, CAS#133-32-4) is a broad-spectrum plant growth regulator of the indole family, functioning as an effective rooting promoter. It accelerates the cutting propagation and adventitious root formation of both herbaceous and woody ornamental plants. Additionally, it is utilized to promote fruit setting and increase the fruit-set rate in fruit crops.

Indole-3-Butyric Acid CAS#133-32-4
Indole-3-Butyric Acid CAS#133-32-4

Company Profile

Fine Chemicals. Global Reach. One-Stop Solutions.

Shandong, China | R&D • Production • Sales • Global Service
Focused on new chemical materials. Built on integrity, quality, and customer-first service. Driven by innovation and strict quality control. Growing through internationalization, higher standards, and brand strength.

Scale: Annual sales RMB 600M+ | 5,000+ industrial clients | Asia, Europe, Africa, Oceania

Products: Pharmaceutical intermediates and raw materials, food additives, electroplating chemicals, water treatment agents, dye auxiliaries, functional materials, titanium compounds, metal salts, catalysts, surfactants.

Applications: Pharmaceuticals, electronics, coatings, rubber and plastics, fine chemicals, water treatment.

Promise: Reliable chemistry. Competitive cost. Complete one-stop service.

Indole-3-Butyric Acid CAS#133-32-4
Indole-3-Butyric Acid CAS#133-32-4

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