Description

p-tert-Butylcatechol (CAS NO 98-29-3) is a high-purity phenolic compound widely recognized as a highly effective polymerization inhibitor and antioxidant. Its primary commercial value lies in its ability to prevent premature polymerization of monomers like styrene, butadiene, and acrylics during production, storage, and transportation, ensuring process safety and product stability. This essential additive is critical for manufacturers in the petrochemical, polymer, resin, and adhesive industries who require reliable stabilization of sensitive intermediates and finished products.

Application

• Polymerization Inhibitor: Essential for stabilizing vinyl monomers (e.g., styrene, acrylates) during distillation, purification, and storage to prevent hazardous runaway polymerization.
• Antioxidant in Petrochemicals: Used to inhibit oxidation and gum formation in gasoline, jet fuels, and other hydrocarbon streams, extending shelf life and maintaining fuel quality.
• Intermediate for Specialty Chemicals: Serves as a key building block in the synthesis of advanced antioxidants, UV stabilizers, and other performance additives.
• Resin & Adhesive Stabilizer: Added to unsaturated polyester resins and adhesive formulations to prevent premature gelation and extend pot life.
• Rubber & Elastomer Industry: Functions as an antioxidant and antiozonant in the production of synthetic rubbers to prevent degradation.
• Photographic Developer Component: Used in specific chemical formulations for photographic development processes.

Basic Information

Product Name	p-tert-Butylcatechol
CAS No.	98-29-3
Molecular Formula	C10H14O2
Molecular Weight	166.22 g/mol
Synonyms	4-tert-Butylcatechol; 4-tert-Butyl-1,2-benzenediol; 4-tert-Butylpyrocatechol; PTBC; TBC; p-tert-Butylpyrocatechol; 1,2-Dihydroxy-4-tert-butylbenzene; Inhibitor TBC; 4-(1,1-Dimethylethyl)-1,2-benzenediol
EINECS	202-653-9

Quality Control

Our p-tert-Butylcatechol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets precise specifications for use as a high-performance inhibitor. Certificates of Analysis (COA) documenting key parameters such as purity, melting point, and color are provided and available upon request 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 and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain maximum efficacy. Keep away from strong oxidizers and heat sources.

Specification

Item	Specification
Appearance	White to light tan crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 99.0%
Melting Point	52 - 55 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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