Description

3,5-Di-tert-Butylsalicylic Acid, Zinc Salt is a coordination complex of zinc with a sterically hindered phenolic ligand, valued for its role as a high-performance antioxidant and metal deactivator. This compound is critical for stabilizing polymers and hydrocarbon-based materials against oxidative degradation and metal-catalyzed breakdown. It is primarily needed by manufacturers in the plastics, rubber, lubricant, and fuel additive industries seeking to extend product lifespan and enhance performance under demanding conditions.

Application

• Polymer Stabilizer: Acts as a highly effective antioxidant and metal deactivator in polyolefins (e.g., polyethylene, polypropylene) and engineering plastics to prevent thermal and oxidative degradation during processing and service life.
• Rubber Industry: Used as a non-staining antioxidant in synthetic rubbers and elastomers to protect against heat aging and maintain mechanical properties.
• Lubricant & Grease Additive: Functions as an antioxidant in industrial lubricants and greases, preventing viscosity increase and sludge formation caused by oxidation.
• Fuel & Oil Additive: Employed as a stabilizer in fuels and transformer oils to inhibit oxidation and neutralize catalytic effects of dissolved metal ions.
• Adhesive & Sealant Formulations: Enhances the long-term stability and performance of hot-melt and reactive adhesives by preventing oxidative cross-linking or degradation.
• Wire & Cable Insulation: Provides critical long-term thermal stability to the polymer insulation, ensuring reliability and safety in electrical applications.

Basic Information

Product Name	3,5-Di-tert-Butylsalicylic Acid, Zinc Salt
CAS No.	72576-09-1
Molecular Formula	C30H42O4Zn
Molecular Weight	532.04 g/mol
Synonyms	Zinc 3,5-Di-tert-butylsalicylate; Zinc Bis(3,5-di-tert-butylsalicylate); Irganox 1425; 3,5-Di-tert-butyl-2-hydroxybenzoic Acid Zinc Salt; Zinc 3,5-Di-tert-butyl-2-hydroxybenzoate; Antioxidant 1425; Bis(3,5-di-tert-butylsalicylato)zinc; EINECS 276-704-3
EINECS	276-704-3

Quality Control

Our production of 3,5-Di-tert-Butylsalicylic Acid, Zinc Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive analysis, including assay, metal content, and impurity profile checks. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, confirming compliance with agreed specifications and industry standards for polymer additives.

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). This material is hygroscopic (moisture-sensitive) and easily oxidized; therefore, containers must be kept tightly sealed when not in use to minimize exposure to air and moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to standard
Assay (Zinc complex)	≥ 98.0 %
Zinc (Zn) Content	11.5 - 12.5 %
Melting Point	≥ 240 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %
Particle Size (Typical)	Pass through 100 mesh

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