Description

Sodium 3,5-Di(tert-Butyl)-4-Hydroxyphenylthiolate is a sterically hindered phenolic thiolate salt, valued for its role as a high-performance antioxidant and stabilizer intermediate. Its primary commercial value lies in its ability to effectively scavenge free radicals and inhibit oxidative degradation in sensitive materials. This compound is essential for manufacturers in the polymer, rubber, and specialty chemical industries seeking to enhance product longevity and performance under demanding conditions.

Application

• As a key antioxidant intermediate in the synthesis of high-performance additives for plastics and elastomers (e.g., polyolefins, synthetic rubber).
• As a stabilizer precursor in fuel and lubricant additive packages to prevent oxidation and sludge formation.
• In the production of light stabilizers (HALS synergists) for coatings and automotive finishes to prevent UV-induced degradation.
• As a specialty chemical building block in organic synthesis for pharmaceuticals and agrochemicals requiring hindered phenol functionality.
• In polymer modification processes to introduce thiol functionality for cross-linking or chain-transfer reactions.
• For research and development of novel radical scavengers and corrosion inhibitors in industrial fluid formulations.

Basic Information

Product Name	Sodium 3,5-Di(tert-Butyl)-4-Hydroxyphenylthiolate
CAS No.	37721-52-1
Molecular Formula	C14H21NaOS
Molecular Weight	260.37 g/mol
Synonyms	Sodium 2,6-Di-tert-butyl-4-mercaptophenolate; Sodium 4-Hydroxy-3,5-di-tert-butylbenzenethiolate; 4-(tert-Butyl)-2,6-bis(1,1-dimethylethyl)phenol, sodium salt; Phenol, 4-(tert-butyl)-2,6-bis(1,1-dimethylethyl)-, sodium salt; Antioxidant 300; AO 300; Sodium Phenolate Thiol Derivative
EINECS	253-652-5

Quality Control

Our Sodium 3,5-Di(tert-Butyl)-4-Hydroxyphenylthiolate is manufactured under a strict quality management system. Each batch is analyzed to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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