Description

α-(3,5-Di-tert-Butyl-4-Hydroxybenzylidene)γ-Butyrolactone is a high-performance hindered phenol lactone derivative, valued for its role as a versatile chemical intermediate and stabilizer. This compound is critical for enhancing the durability and performance of advanced polymeric materials by providing effective antioxidant and light-stabilizing properties. It is primarily sought by manufacturers in the polymer, specialty chemical, and additive industries for developing high-quality, long-lasting products.

Application

• Polymer Additive: Acts as a key intermediate in the synthesis of high-performance antioxidants and light stabilizers for plastics (e.g., polyolefins, PVC) and synthetic rubbers.
• Specialty Chemical Synthesis: Serves as a crucial building block for creating complex molecules used in advanced material science and fine chemical production.
• Lubricant & Fuel Stabilizer: Used in formulating additives that prevent oxidation and degradation in industrial lubricants and fuels.
• Coating & Resin Industry: Incorporated into formulations for coatings, adhesives, and resins to improve their thermal stability and weatherability.
• Research & Development: Employed in academic and industrial R&D for studying antioxidant mechanisms and developing new stabilization technologies.

Basic Information

Product Name	α-(3,5-Di-tert-Butyl-4-Hydroxybenzylidene)γ-Butyrolactone
CAS No.	83677-24-1
Molecular Formula	C19H26O3
Molecular Weight	302.41 g/mol
Synonyms	3,5-Di-tert-butyl-4-hydroxybenzylidene butyrolactone; 2(3H)-Furanone, 3-[1-(3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methylene]dihydro-; 3-(3,5-Di-tert-butyl-4-hydroxybenzylidene)dihydrofuran-2(3H)-one; Antioxidant Lactone Intermediate; Benzylidenebutyrolactone derivative; Phenolic lactone stabilizer; (E)-3-(3,5-Di-tert-butyl-4-hydroxybenzylidene)dihydrofuran-2(3H)-one
EINECS	Contact for details

Quality Control

Our production of α-(3,5-Di-tert-Butyl-4-Hydroxybenzylidene)γ-Butyrolactone adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is manufactured and tested in facilities that follow cGMP (current Good Manufacturing Practice) guidelines where applicable. Comprehensive analytical testing, including HPLC, GC, and NMR, is performed to verify identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	156 - 160 °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.