Description

4-tert-Butylphthalic Anhydride is a specialized organic intermediate characterized by its bulky tert-butyl substituent on the phthalic anhydride core. This structural feature makes it a valuable building block for modifying polymer properties and synthesizing advanced materials with enhanced thermal stability and specific functional characteristics. It is primarily sought after by manufacturers in the polymer, resin, and specialty chemical industries for applications requiring tailored performance.

Application

• Polymer Modification: Used as a comonomer or end-capping agent in the synthesis of polyimides, polyesters, and epoxy resins to improve thermal stability, solubility, and mechanical properties.
• High-Performance Plastics: A key intermediate for producing monomers used in engineering plastics and high-temperature resistant polymers.
• Curing Agent for Epoxy Resins: Acts as a hardener/anhydride curing agent, contributing to the final cross-linked network's thermal and chemical resistance.
• Synthesis of Plasticizers and Additives: Serves as a precursor for creating specialized plasticizers, stabilizers, and other polymer additives.
• Organic Synthesis Intermediate: Employed in pharmaceutical and agrochemical research for constructing complex molecules due to its reactive anhydride group.
• Dyes and Pigments: Used in the synthesis of certain organic pigments and dye intermediates.
• Liquid Crystal Polymers (LCPs): Can be incorporated into the backbone of LCPs to influence mesomorphic properties.
• Adhesives and Coatings: Imparts enhanced durability and heat resistance to industrial adhesives and protective coatings.

Basic Information

Product Name	4-tert-Butylphthalic Anhydride
CAS No.	40496-93-3
Molecular Formula	C12H12O3
Molecular Weight	204.22 g/mol
Synonyms	4-(1,1-Dimethylethyl)-1,3-isobenzofurandione; 4-tert-Butyl-1,3-isobenzofurandione; 4-tert-Butylphthalic acid anhydride; 4-(tert-Butyl)phthalic anhydride; 1,3-Dioxo-4-tert-butyl-1,3-dihydro-2-benzofuran; 4-tert-Butylbenzene-1,2-dicarboxylic anhydride; 4-t-Butylphthalic Anhydride; PTBPA
EINECS	254-949-1

Quality Control

Our 4-tert-Butylphthalic Anhydride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We employ advanced analytical techniques including HPLC, GC, and NMR for verification. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

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). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis. Keep away from strong bases, amines, and moisture.

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%
Heavy Metals	≤ 20 ppm

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