Description

4-sec-Butyl-2,6-Di-tert-Butylphenol is a high-performance hindered phenolic antioxidant widely recognized for its effectiveness in stabilizing organic materials against oxidative degradation. This compound is critical for extending the service life and maintaining the physical properties of polymers, fuels, and lubricants under demanding conditions. It is an essential additive for manufacturers in the polymer, petrochemical, and specialty chemical industries seeking reliable oxidation inhibition.

Application

• Primary antioxidant in polyolefins (polyethylene, polypropylene) and other polymers to prevent thermal-oxidative degradation during processing and end-use.
• Stabilizer for lubricating oils, greases, and industrial fluids to inhibit sludge formation and viscosity increase.
• Additive in gasoline and diesel fuels to improve storage stability and prevent gum formation.
• Intermediate in the synthesis of more complex antioxidant systems and other specialty chemicals.
• Stabilizing agent for adhesives, sealants, and elastomers to enhance durability.
• Protective additive in transformer oils and other dielectric fluids.

Basic Information

Product Name	4-sec-Butyl-2,6-Di-tert-Butylphenol
CAS No.	17540-75-9
Molecular Formula	C18H30O
Molecular Weight	262.43 g/mol
Synonyms	2,6-Di-tert-butyl-4-sec-butylphenol; Phenol, 4-(1-methylpropyl)-2,6-bis(1,1-dimethylethyl)-; Antioxidant 1520; AO 1520; 4-(1-Methylpropyl)-2,6-bis(1,1-dimethylethyl)phenol; 4-sec-Butyl-2,6-di-tert-butylphenol; LZ 1520
EINECS	241-525-4

Quality Control

Our 4-sec-Butyl-2,6-Di-tert-Butylphenol is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. A Certificate of Analysis (COA) detailing key parameters is provided with each shipment to guarantee consistency and compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	48 - 52 °C
Loss on Drying	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.