Description

4,4'-Di-tert-Butyldiphenylamine is a high-purity, sterically hindered aromatic amine derivative, widely recognized for its role as an effective antioxidant and stabilizer. Its molecular structure provides excellent performance in inhibiting oxidative degradation and extending the service life of various polymeric materials and chemical formulations. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product durability and stability under demanding conditions.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and end-use.
• Key additive in synthetic lubricants, greases, and hydraulic fluids to improve oxidation resistance and extend fluid life.
• Stabilizing component in rubber and elastomer formulations to protect against heat and oxygen-induced aging.
• Intermediate in the synthesis of more complex hindered amine light stabilizers (HALS) and other specialty chemical additives.
• Used in fuel and gasoline additives to prevent gum formation and maintain fuel stability.
• Protective agent in adhesives, sealants, and coatings to enhance weatherability and long-term performance.
• Research and development applications in organic synthesis and material science.

Basic Information

Product Name	4,4'-Di-tert-Butyldiphenylamine
CAS No.	4627-22-9
Molecular Formula	C20H27N
Molecular Weight	281.44 g/mol
Synonyms	Bis(4-tert-butylphenyl)amine; Di(4-tert-butylphenyl)amine; 4,4'-Di-tert-butyl diphenylamine; 4-(1,1-Dimethylethyl)-N-[4-(1,1-dimethylethyl)phenyl]benzenamine; Antioxidant DTBD; DTBD; 4,4'-Di-tert-butyldifenylamin; 4,4'-Di-tert-butyldiphenylamin; 4,4'-Di-tert-butyl-diphenylamine; 4,4'-Di-tert-butylphenylamine
EINECS	225-048-5

Quality Control

Our 4,4'-Di-tert-Butyldiphenylamine is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including assay, identification, and impurity profiling. Certificates of Analysis (COA) documenting full specifications are available for every shipment to support your quality assurance and regulatory needs.

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 and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain optimal quality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	98 - 102 °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.