Description

1H-Pyrrole-2,5-Dione, 1-[[3,5-Bis(1,1-Dimethylethyl)-4-Hydroxyphenyl]Methyl]- is a sterically hindered phenolic antioxidant and light stabilizer, valued for its ability to protect polymers and other materials from oxidative degradation and UV-induced damage. Its molecular structure, featuring a phenolic hydroxyl group and a maleimide moiety, makes it highly effective in scavenging free radicals and quenching excited states. This compound is essential for manufacturers in the polymer, plastics, and specialty chemical industries seeking to enhance the longevity and performance stability of their products.

Application

• Polymer Stabilizer: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and service life.
• Light Stabilizer: Used in coatings, adhesives, and plastic films to protect against photodegradation and color fading caused by UV exposure.
• Additive for Lubricants and Fuels: Acts as an antioxidant additive in industrial lubricants, greases, and fuels to inhibit oxidation and sludge formation.
• Intermediate for Specialty Chemicals: Serves as a key building block in the synthesis of more complex hindered amine light stabilizers (HALS) and other high-performance additives.
• Elastomer Protection: Extends the service life of synthetic elastomers and tire components by protecting against heat and oxygen-induced aging.
• Food Contact Material Additive: Potential use as a stabilizing additive in polymers intended for food packaging, subject to relevant regulatory compliance (e.g., FDA, EU).

Basic Information

Product Name	1H-Pyrrole-2,5-Dione, 1-[[3,5-Bis(1,1-Dimethylethyl)-4-Hydroxyphenyl]Methyl]-
CAS No.	63485-14-3
Molecular Formula	C19H25NO3
Molecular Weight	315.41 g/mol
Synonyms	1-[[3,5-Bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]-1H-pyrrole-2,5-dione; 1-[[3,5-Di-tert-butyl-4-hydroxyphenyl]methyl]maleimide; N-(3,5-Di-tert-butyl-4-hydroxybenzyl)maleimide; DBHBM; Antioxidant DBHBM; Phenolic maleimide antioxidant; Light Stabilizer DBHBM; N-(3,5-Di-tert-butyl-4-hydroxybenzyl)maleimide
EINECS	Contact for details

Quality Control

Our production of 1H-Pyrrole-2,5-Dione, 1-[[3,5-Bis(1,1-Dimethylethyl)-4-Hydroxyphenyl]Methyl]- adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive applications like polymer stabilization. Certificates of Analysis (COA) documenting all critical parameters are available upon request, providing full traceability and quality assurance for our global B2B clients.

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 product is easily oxidized; for long-term storage, consider keeping under an inert atmosphere (nitrogen or argon). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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