Description

3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-B,B-Dimethyl-Benzenepropanol is a sterically hindered phenolic compound, widely recognized for its excellent antioxidant properties. This high-performance additive is crucial for preventing oxidative degradation and extending the service life of sensitive materials. It is an essential raw material for formulators and manufacturers in the polymer, lubricant, and specialty chemical industries seeking reliable stabilization solutions.

Application

• Polymer Stabilizer: A primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Lubricant & Fuel Additive: Used in engine oils, industrial lubricants, greases, and fuels to inhibit oxidation, reduce sludge formation, and extend fluid life.
• Adhesive & Sealant Formulations: Enhances the shelf-life and long-term stability of reactive adhesives, sealants, and coatings by scavenging free radicals.
• Elastomer Protection: Provides antioxidant protection for synthetic elastomers like SBR, NBR, and EPDM, maintaining their physical properties.
• Specialty Chemical Intermediate: Serves as a key building block for synthesizing more complex, high-molecular-weight hindered phenol antioxidants.
• Cosmetic & Personal Care Preservative: Used in select formulations as an antioxidant to stabilize oils and prevent rancidity in cosmetic products.

Basic Information

Product Name	3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-B,B-Dimethyl-Benzenepropanol
CAS No.	57717-80-3
Molecular Formula	C19H32O2
Molecular Weight	292.46 g/mol
Synonyms	Benzenepropanol, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-β,β-dimethyl-; 2,6-Di-tert-butyl-4-(1,1-dimethyl-2-hydroxyethyl)phenol; Antioxidant 1790; AO-1790; Ethanox 1790; 4-Hydroxy-3,5-di-tert-butyl-α,α-dimethylbenzenepropanol; 4-Hydroxy-3,5-di-tert-butylhydrocinnamic alcohol; 3-(3,5-Di-tert-butyl-4-hydroxyphenyl)-2,2-dimethylpropan-1-ol
EINECS	Contact for details

Quality Control

Our production of 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-B,B-Dimethyl-Benzenepropanol adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing, including HPLC and GC, to ensure consistent purity and performance. Certificates of Analysis (COA) detailing assay, identity, and impurity profiles are provided with each shipment to guarantee compliance with your technical specifications.

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 sources and incompatible materials. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	154 - 158 °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.