Description

N,n-Dibutyl-2,4,8,10-Tetra-tert-Butyldibenzo[D,F][1,3,2]Dioxaphosphepin-6-Amine is a specialized organophosphorus compound that serves as a highly effective hindered amine light stabilizer (HALS) and antioxidant. This chemical matters for its superior ability to protect polymers from thermal degradation and UV-induced oxidation, significantly extending the service life of finished products. It is primarily needed by manufacturers in the plastics, coatings, and synthetic rubber industries seeking to enhance the durability and performance of their materials under demanding environmental conditions.

Application

• As a high-performance light stabilizer (HALS) in polyolefins (PP, PE) and engineering plastics to prevent photo-oxidation and maintain color stability.
• As a thermal antioxidant in synthetic rubbers and elastomers to prevent degradation during high-temperature processing and in-service use.
• As a stabilizing additive in automotive coatings, industrial paints, and wood finishes to protect against UV radiation and weathering.
• As a key component in advanced polymer additive packages and masterbatches for long-term outdoor applications.
• In the formulation of agricultural films and greenhouse covers to enhance resistance to sunlight and extend functional lifespan.
• For the stabilization of adhesives and sealants exposed to environmental stressors.
• In wire and cable insulation compounds to protect against thermal aging.

Basic Information

Product Name	N,n-Dibutyl-2,4,8,10-Tetra-tert-Butyldibenzo[D,F][1,3,2]Dioxaphosphepin-6-Amine
CAS No.	73348-53-5
Molecular Formula	C36H58NO2P
Molecular Weight	567.83 g/mol
Synonyms	Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite; Ultranox 626; Doverphos S-686; Phosphite stabilizer 626; ADK STAB PEP-36; Irgafos 126; 2,4,8,10-Tetra-tert-butyl-6-[(dibutylamino)methyl]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin; Pentaerythritol bis(2,4-di-tert-butylphenyl) phosphite
EINECS	Contact for details

Quality Control

Our N,n-Dibutyl-2,4,8,10-Tetra-tert-Butyldibenzo[D,F][1,3,2]Dioxaphosphepin-6-Amine is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC and NMR, to confirm identity and assay. Certificates of Analysis (COA) documenting key specifications are available for every batch and provided upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is easily oxidized and should be kept under an inert atmosphere (e.g., nitrogen) after opening to maintain efficacy. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	175 - 185 °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.