Description

Methyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate is a high-performance hindered phenolic antioxidant and light stabilizer. This compound is critical for protecting polymers and other organic materials from oxidative degradation and UV-induced damage, thereby extending their service life and maintaining their physical properties. It is essential for manufacturers in the plastics, rubber, coatings, and specialty chemical industries who require reliable additive solutions for their formulations.

Application

• Primary antioxidant and light stabilizer for polyolefins (PP, PE) and engineering plastics.
• Additive for synthetic rubbers and elastomers to prevent chain scission and cross-linking.
• Stabilizing component in adhesives, sealants, and industrial lubricants to enhance thermal-oxidative stability.
• Key intermediate in the synthesis of more complex polymer additives and pharmaceutical compounds.
• Protective agent in coatings and paints to prevent yellowing and loss of gloss due to UV exposure.
• Stabilizer for hydrocarbon-based fluids and fuels.

Basic Information

Item	Detail
Product Name	Methyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate
CAS No.	2511-22-0
Molecular Formula	C16H24O3
Molecular Weight	264.36 g/mol
Synonyms	Methyl 3,5-bis(1,1-dimethylethyl)-4-hydroxybenzoate; Benzoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, methyl ester; 4-Hydroxy-3,5-di-tert-butylbenzoic acid methyl ester; Methyl 4-hydroxy-3,5-di-tert-butylbenzoate; Antioxidant 736; Irganox 1425 (related trade series); Light stabilizer 1425; 3,5-Di-tert-butyl-4-hydroxybenzoic acid methyl ester
EINECS	219-750-8

Quality Control

Our production of Methyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate adheres to a rigorous quality management system. Every batch is tested against stringent in-house specifications to ensure consistent purity, performance, and reliability. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment, and we support compliance with relevant global regulatory frameworks.

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, consider an inert atmosphere (nitrogen blanket) 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)	≥ 98.0%
Melting Point	192°C - 198°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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