Description

4-tert-Butylbenzoic Anhydride is a specialized organic chemical intermediate derived from 4-tert-butylbenzoic acid. This compound is valued for its role as a versatile acylating agent and building block in the synthesis of more complex molecules. It is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for the development of active ingredients and performance additives.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring the 4-tert-butylbenzoyl moiety.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where its structural properties enhance efficacy and stability.
• Polymer Additive Precursor: Serves as a starting material for synthesizing light stabilizers, antioxidants, and other performance additives for plastics and coatings.
• Organic Synthesis Reagent: Functions as an efficient acylating agent in esterification and amidation reactions under mild conditions.
• Liquid Crystal & Dye Intermediate: Employed in the manufacture of specialty chemicals for electronic displays and high-performance pigments.
• Cross-linking Agent: Utilized in the production of resins and polymers requiring specific thermal or chemical resistance properties.

Basic Information

Product Name	4-tert-Butylbenzoic Anhydride
CAS No.	22201-45-2
Molecular Formula	C22H26O3
Molecular Weight	338.44 g/mol
Synonyms	4-(tert-Butyl)benzoic anhydride; Di(4-tert-butylbenzoyl) oxide; Bis(4-tert-butylbenzoyl) anhydride; p-tert-Butylbenzoic anhydride; 4-tert-Butylbenzoic acid anhydride; Anhydrid kyseliny 4-terc-butylbenzoove [Czech]; 4-tert-Butylbenzoyl anhydride
EINECS	244-826-1

Quality Control

Our 4-tert-Butylbenzoic Anhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay and impurity profile determination by HPLC and GC, to ensure it meets the high-purity standards required for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and specific tests is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 100 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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