Description

Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, C13-15-Branched And Linear Alkyl Esters is a high-performance phenolic antioxidant ester, valued for its excellent compatibility and low volatility in demanding polymer systems. This compound is specifically engineered to provide superior long-term thermal and oxidative stability, preventing degradation and extending the service life of finished products. It is a critical additive for manufacturers in the plastics, rubber, and lubricant industries who require reliable stabilization under high-temperature processing and end-use conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and in-service.
• Lubricant & Grease Additive: Enhances the oxidative stability of industrial lubricants, gear oils, and greases, reducing sludge formation and viscosity increase.
• Adhesive & Sealant Formulations: Protects polyurethane, silicone, and other polymer-based adhesives and sealants from embrittlement and loss of elasticity.
• Hot-Melt Adhesives (HMA): Prevents discoloration and maintains adhesive properties during high-temperature application and storage.
• Elastomer Production: Used in SBR, EPDM, and nitrile rubber compounds to retain physical properties and prevent cracking.
• Fuel & Oil Additive: Acts as a stabilizer in fuels and transformer oils to inhibit gum formation and acid generation.

Basic Information

Product Name	Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, C13-15-Branched And Linear Alkyl Esters
CAS No.	171090-93-0
Molecular Formula	Typically CnH2n+2O3 (Variable alkyl chain)
Molecular Weight	~500-600 g/mol (Average)
Synonyms	Irganox 1135; 3,5-Di-tert-butyl-4-hydroxyhydrocinnamic acid, C13-15 alkyl esters; Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (related); Antioxidant 1135; Phenolic antioxidant ester; C13-15 Alkyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate; Low volatility phenolic antioxidant; Bis(1,1-dimethylethyl)-4-hydroxy-benzenepropanoic acid C13-15 alkyl esters
EINECS	Contact for details

Quality Control

Our production of Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, C13-15-Branched And Linear Alkyl Esters adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. All material is manufactured under ISO 9001 guidelines and undergoes comprehensive analytical testing, including assay, color, and impurity profile determination. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with each shipment 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 room temperature (15-25°C). This product is easily oxidized (store under inert atmosphere) and is compatible with strong acid/organic solvent materials. Keep away from heat, sparks, and open flame. Isolate from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	48 - 52 °C
Volatile Matter	≤ 0.5 %
Ash Content	≤ 0.1 %
Color (APHA)	≤ 50

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