Description

4-tert-Butyl-2-Methylbenzoic Acid is a substituted benzoic acid derivative valued for its role as a versatile chemical intermediate and building block in advanced synthesis. Its unique sterically hindered structure, featuring both tert-butyl and methyl groups on the aromatic ring, makes it particularly useful for creating specialized compounds with tailored properties. This product is essential for R&D and production in the pharmaceutical, agrochemical, and specialty polymer industries.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring sterically hindered aromatic acids.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where its substituted aromatic core provides specific biological activity.
• Liquid Crystal & OLED Materials: Serves as a precursor or modifying agent in the synthesis of organic electronic materials and liquid crystal displays (LCDs).
• Polymer & Resin Modifier: Incorporated as a monomer or additive to enhance the thermal stability, solubility, or mechanical properties of specialty polymers and coatings.
• Organic Synthesis & Catalysis: Employed as a ligand precursor or a structurally defined acid component in metal-organic frameworks (MOFs) and catalytic systems.
• Fragrance & Dye Intermediate: Utilized in the fine chemical industry for the synthesis of complex fragrance molecules and specialized dyes.

Basic Information

Item	Detail
Product Name	4-tert-Butyl-2-Methylbenzoic Acid
CAS No.	33691-85-9
Molecular Formula	C12H16O2
Molecular Weight	192.26 g/mol
Synonyms	2-Methyl-4-tert-butylbenzoic Acid; 4-(1,1-Dimethylethyl)-2-methylbenzoic Acid; Benzoic acid, 4-(1,1-dimethylethyl)-2-methyl-; 4-tert-Butyl-o-toluic Acid; p-tert-Butyl-2-methylbenzoic Acid; 2-Methyl-4-(tert-butyl)benzoic Acid; 4-tert-Butyl-2-methylbenzenecarboxylic acid; 33691-85-9
EINECS	Contact for details

Quality Control

Our production of 4-tert-Butyl-2-Methylbenzoic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, and we support compliance with relevant regulatory frameworks including REACH.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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