Description

tert-Butyl-p-Cresol (CAS NO 25567-40-2) is a high-purity phenolic antioxidant widely used to inhibit oxidative degradation in various industrial processes. Its primary value lies in its ability to stabilize materials against thermal and oxidative stress, thereby extending product shelf life and maintaining performance integrity. This compound is essential for manufacturers in the polymer, rubber, fuel, and lubricant industries seeking reliable protection for their formulations.

Application

• Polymer Stabilizer: Acts as an antioxidant in polyethylene, polypropylene, and other plastics to prevent chain scission and discoloration during processing and end-use.
• Rubber Antioxidant: Inhibits the oxidation of natural and synthetic rubber, preserving elasticity and preventing cracking in tires and industrial rubber goods.
• Fuel & Lubricant Additive: Used in gasoline, jet fuels, and industrial oils to prevent gum formation and acid generation, ensuring engine cleanliness and performance.
• Industrial Grease Stabilizer: Protects lithium-based and other complex greases from oxidative thickening and loss of lubricating properties.
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex antioxidants and light stabilizers.
• Adhesive & Sealant Preservative: Extends the pot life and durability of adhesives, sealants, and caulks by preventing resin degradation.

Basic Information

Product Name	tert-Butyl-p-Cresol
CAS No.	25567-40-2
Molecular Formula	C11H16O
Molecular Weight	164.24 g/mol
Synonyms	4-tert-Butylphenol; 4-(1,1-Dimethylethyl)phenol; 4-tert-Butyl-1-hydroxybenzene; p-tert-Butylphenol; PTBP; 4-t-Butylphenol; Butylphen; Antioxidant 4-TBP
EINECS	247-093-9

Quality Control

Our tert-Butyl-p-Cresol is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. The product is tested against rigorous internal specifications, which typically include assay, melting point, and impurity profile analysis. A Certificate of Analysis (COA) documenting the results for each parameter is provided with every 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 material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Melting Point	98 - 102 °C
Loss on Drying	≤ 0.5 %
Related Substances (HPLC)	Total impurities ≤ 1.0%

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