Description

Thiodiglycolic Anhydride is a specialized cyclic anhydride derivative of thiodiglycolic acid, serving as a versatile building block in advanced organic synthesis. Its unique sulfur-containing structure makes it a valuable intermediate for introducing thioether linkages and modifying polymer backbones. This compound is particularly relevant for manufacturers in the pharmaceutical, polymer, and specialty chemical industries seeking to develop novel materials or active ingredients with tailored properties.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring thioether or cyclic anhydride functionalities.
• Polymer Modification: Used as a comonomer or cross-linking agent to introduce sulfur atoms into polymer chains, enhancing properties like thermal stability, adhesion, or chemical resistance.
• Specialty Chemical Synthesis: Serves as a starting material for producing corrosion inhibitors, lubricant additives, and other performance chemicals.
• Research & Development: Employed in academic and industrial R&D labs for exploring new synthetic routes and creating novel heterocyclic compounds.
• Adhesive & Coating Formulations: Can be incorporated into formulations to improve the flexibility and durability of cured resins.

Basic Information

Product Name	Thiodiglycolic Anhydride
CAS No.	3261-87-8
Molecular Formula	C4H4O3S
Molecular Weight	132.14 g/mol
Synonyms	2,5-Dioxo-1,4-oxathiane; 1,4-Oxathiane-2,5-dione; Thiodiglycolic Acid Anhydride; Sulfinyldiacetic Anhydride; TDGA; Oxathiane-2,5-dione; Thiodiglycolic Acid Cyclic Anhydride; Sulfinyl Diacetic Anhydride
EINECS	221-862-5

Quality Control

Our Thiodiglycolic Anhydride is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We can support compliance requirements for various industrial and research applications.

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 and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	97 - 102 °C
Loss on Drying	≤ 1.0%
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.