Description

m-Toluic Anhydride is a specialized organic acid anhydride derived from m-toluic acid, serving as a key reactive intermediate in advanced chemical synthesis. Its primary value lies in its ability to efficiently introduce the m-toluoyl moiety, enabling the production of high-performance polymers, resins, and fine chemicals. This compound is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop novel compounds with tailored properties.

Application

• As a key monomer or chain extender in the synthesis of high-temperature resistant polyimides and polyamide-imides for the electronics and aerospace sectors.
• In the production of liquid crystal polymers (LCPs) and other advanced engineering plastics requiring excellent thermal and mechanical stability.
• As a versatile acylating agent in pharmaceutical intermediate synthesis for creating active pharmaceutical ingredients (APIs).
• In the manufacture of agrochemicals, such as herbicides and fungicides, where it acts as a building block for active molecules.
• For the synthesis of dyes, pigments, and optical brighteners in the specialty chemicals industry.
• In cross-linking agent formulations for epoxy and other thermoset resins to enhance performance characteristics.
• As a reagent in organic synthesis research for developing novel chemical entities and materials.

Basic Information

Product Name	m-Toluic Anhydride
CAS No.	21436-44-2
Molecular Formula	C16H14O3
Molecular Weight	254.28 g/mol
Synonyms	3-Methylbenzoic Anhydride; m-Toluic Acid Anhydride; Bis(3-methylbenzoyl) Anhydride; 3-Methylbenzoyl Anhydride; Anhydride of m-Toluic Acid; m-Methylbenzoic Anhydride; 1,1'-(Oxydicarbonyl)bis(3-methylbenzene); Isophthalic Acid, Dimethyl Ester (related isomer)
EINECS	Contact for details

Quality Control

Our m-Toluic Anhydride is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from strong bases, oxidizing agents, and sources of heat.

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%
Related Impurities (HPLC)	≤ 1.0% (total)

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