Description

Antioxidant 1135 is a high-performance, hindered phenolic antioxidant widely recognized for its exceptional efficacy in stabilizing polymers and organic materials against thermal and oxidative degradation. This compound is critical for extending the service life and maintaining the physical properties of materials exposed to harsh environmental conditions. It is an essential additive for manufacturers in the plastics, rubber, synthetic fiber, and lubricant industries seeking to enhance product durability and performance.

Application

• Primary antioxidant for polyolefins (PP, HDPE, LDPE) to prevent chain scission and discoloration during processing and end-use.
• Thermal stabilizer for engineering plastics and styrenic polymers (ABS, PS) to maintain mechanical integrity.
• Additive in synthetic rubbers and elastomers to prevent cracking and loss of elasticity.
• Stabilizing component in adhesives, sealants, and synthetic fibers to ensure long-term performance.
• Used in lubricating oils and greases to inhibit oxidation and sludge formation, extending oil life.
• Effective stabilizer in hot-melt adhesives and coatings to prevent gelation and maintain viscosity.
• Often used in synergy with phosphite or thioester secondary antioxidants for enhanced stabilization packages.

Basic Information

Product Name	Antioxidant 1135
CAS No.	125643-61-0
Molecular Formula	C29H44O3
Molecular Weight	440.66 g/mol
Synonyms	Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, C7-9-branched alkyl esters; Phenolic antioxidant 1135; Irganox 1135; AO-1135; 3,5-Di-tert-butyl-4-hydroxyhydrocinnamic acid, C7-9 branched alkyl esters; Antioxidant 1135 (C7-9); Low volatility phenolic antioxidant
EINECS	Contact for details

Quality Control

Our production of Antioxidant 1135 adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is manufactured and tested in facilities that implement GMP (Good Manufacturing Practice) guidelines where applicable. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, melting point, and impurity profiles. We support compliance with global regulatory frameworks including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline 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.