Description

2-Hydroxy-3,5-Di-tert-Butyldiphenylamine is a sterically hindered phenolic amine antioxidant, widely recognized for its effectiveness in preventing oxidative degradation. This compound is critical for protecting polymers, fuels, and lubricants from thermal and oxidative stress, thereby extending their functional lifespan and maintaining performance. It is an essential additive for manufacturers in the plastics, rubber, and specialty chemical industries seeking reliable stabilization solutions.

Application

• Primary antioxidant in polyolefins (e.g., polyethylene, polypropylene) to prevent polymer degradation during processing and service.
• Stabilizer for synthetic rubbers and elastomers to enhance resistance to heat aging and oxidation.
• Additive in lubricating oils, greases, and industrial fuels to inhibit oxidation and sludge formation.
• Stabilizing agent in adhesives and sealants to improve long-term durability and performance.
• Intermediate in the synthesis of more complex, high-performance antioxidants and light stabilizers.
• Protective additive for engineering plastics and other high-temperature polymer applications.

Basic Information

Product Name	2-Hydroxy-3,5-Di-tert-Butyldiphenylamine
CAS No.	94876-25-2
Molecular Formula	C20H27NO
Molecular Weight	297.44 g/mol
Synonyms	2-Hydroxy-3,5-di-tert-butyldiphenylamine; Phenol, 2-[(3,5-bis(1,1-dimethylethyl)phenyl)amino]-; Antioxidant 703; 3,5-Di-tert-butyl-4-hydroxy-diphenylamine; N-(3,5-Di-tert-butyl-4-hydroxyphenyl)aniline; Diphenylamine, 2-hydroxy-3,5-di-tert-butyl-; DBHA
EINECS	Contact for details

Quality Control

Our 2-Hydroxy-3,5-Di-tert-Butyldiphenylamine is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay, purity, and impurity profile determination, to ensure it meets the high standards required for industrial applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	185 - 190 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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