Description

Dibenzoic Thioanhydride is a specialized organic sulfur compound, also known as thiosalicylic anhydride, with the CAS number 1850-15-3. This chemical serves as a versatile building block and intermediate in advanced organic synthesis, valued for its unique thioanhydride functional group. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and material science sectors for developing novel compounds and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfur heterocycles or thioester functionalities.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and pesticides, where the sulfur moiety can enhance biological activity.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the production of specialty polymers, resins, and high-performance materials.
• Organic Synthesis Reagent: Employed in academic and industrial R&D for constructing complex molecular architectures, including heterocyclic compounds and ligands.
• Dye & Pigment Manufacturing: Intermediate in the synthesis of sulfur-containing dyes and organic pigments.
• Lubricant & Fuel Additive Precursor: Used to develop extreme pressure additives and anti-wear agents for industrial lubricants.

Basic Information

Product Name	Dibenzoic Thioanhydride
CAS No.	1850-15-3
Molecular Formula	C14H8O2S
Molecular Weight	240.28 g/mol
Synonyms	Thiosalicylic Anhydride; 2,2'-Thiodibenzoic Anhydride; Dithiosalicylic Anhydride; Benzothioic Anhydride, Dibenzo-; 1,3-Dihydro-1,3-dioxobenzo[c]thiophene; Benzo[c]thiophene-1,3-dione; NSC 403107
EINECS	217-439-6

Quality Control

Our Dibenzoic Thioanhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and impurity profiles is provided with every shipment and is available upon request.

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). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, the container should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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