Description

3,5-Bis-tert-Butylsalicylic Acid is a sterically hindered phenolic compound that serves as a high-performance intermediate and functional additive. Its molecular structure provides excellent antioxidant and metal-chelating properties, making it valuable for stabilizing polymers and other materials against thermal and oxidative degradation. This product is primarily utilized by manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and performance.

Application

• Polymer Stabilizer: Acts as a key intermediate in the synthesis of high-performance hindered phenol antioxidants (e.g., Irganox-type additives) for plastics, rubbers, and synthetic fibers.
• Lubricant & Fuel Additive: Used to formulate antioxidants that prevent sludge formation and viscosity increase in engine oils, industrial lubricants, and fuels.
• Metal Deactivator/Chelating Agent: Its salicylic acid structure allows it to chelate metal ions, preventing metal-catalyzed degradation in various industrial processes and formulations.
• Pharmaceutical & Agrochemical Intermediate: Serves as a building block for synthesizing more complex molecules with biological activity.
• UV Stabilizer Synthon: A precursor in the production of light stabilizers that protect materials from photodegradation.
• Specialty Chemical Synthesis: Employed in organic synthesis for introducing the bulky, antioxidant tert-butylphenolic group into target molecules.

Basic Information

Product Name	3,5-Bis-tert-Butylsalicylic Acid
CAS No.	19715-19-6
Molecular Formula	C15H22O3
Molecular Weight	250.33 g/mol
Synonyms	3,5-Di-tert-butylsalicylic acid; 2-Hydroxy-3,5-di-tert-butylbenzoic acid; 3,5-Bis(1,1-dimethylethyl)-2-hydroxybenzoic acid; DBBA; 3,5-DTBSA; Salicylic acid, 3,5-bis(1,1-dimethylethyl)-; Antioxidant Intermediate 3,5-DTBSA
EINECS	243-265-8

Quality Control

Our production of 3,5-Bis-tert-Butylsalicylic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC, GC, and NMR. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with customer and industry requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and bases. The compound is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	190°C - 195°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.