Description

Citric Acid Anhydride is a key chemical intermediate derived from citric acid, offering enhanced reactivity for specialized synthesis. This compound is crucial for manufacturers requiring precise control over esterification and acylation reactions without introducing water. It is primarily utilized by the pharmaceutical, food additive, and specialty chemical industries for producing high-value derivatives.

Application

• Pharmaceutical Synthesis: Acts as a versatile building block for prodrugs and active pharmaceutical ingredients (APIs).
• Food & Beverage Additives: Used in the production of emulsifiers, acidulants, and flavor enhancers.
• Polymer & Resin Modification: Serves as a cross-linking agent or modifier to alter polymer properties.
• Cosmetic & Personal Care: Employed in the synthesis of esters for creams, lotions, and other formulations.
• Industrial Cleaning Agents: A component in formulations for descaling and chelating agents.
• Biodegradable Chelants: Used in the production of environmentally friendly sequestering agents.

Basic Information

Product Name	Citric Acid Anhydride
CAS No.	24555-16-6
Molecular Formula	C6H6O7
Molecular Weight	190.11 g/mol
Synonyms	Citric Anhydride; Anhydrocitric Acid; 3-Carboxy-3-hydroxypentane-1,5-dioic Anhydride; 1,2,3-Propanetricarboxylic Acid, 2-Hydroxy-, Anhydride; Citric Acid Anhydrous (in specific contexts); Oxytricarballylic Anhydride; Hydroxypropane-1,2,3-tricarboxylic Anhydride
EINECS	Contact for details

Quality Control

Our Citric Acid Anhydride is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and reliability. We provide comprehensive specifications and support compliance with relevant frameworks for industrial and specialty chemical applications. Certificates of Analysis (COA) are available upon request to verify purity and conformance to your specific requirements.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	152 - 156 °C
Heavy Metals (as Pb)	≤ 10 ppm

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