Description

5,5'-Methylenedisalicylic Acid is a bifunctional organic compound featuring two salicylic acid moieties linked by a methylene bridge. This unique structure makes it a valuable intermediate and building block in advanced chemical synthesis. It is primarily sought after by manufacturers in the pharmaceutical and specialty chemical industries for the development of active pharmaceutical ingredients (APIs), polymer precursors, and complex ligands.

Application

• Pharmaceutical Intermediate: A key starting material or intermediate in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Polymer Chemistry: Serves as a monomer or cross-linking agent for producing specialty polymers, resins, and high-performance materials.
• Chelating Agent Synthesis: Used in the manufacture of ligands and chelating agents for metal ion binding in analytical or industrial processes.
• Chemical Research & Development: Employed as a versatile building block in organic synthesis and medicinal chemistry research.
• Dye and Pigment Manufacturing: Acts as an intermediate in the production of certain complex dyes and organic pigments.

Basic Information

Product Name	5,5'-Methylenedisalicylic Acid
CAS No.	122-25-8
Molecular Formula	C15H12O6
Molecular Weight	288.25 g/mol
Synonyms	Bis(5-carboxy-2-hydroxyphenyl)methane; 4,4'-Dihydroxydiphenylmethane-3,3'-dicarboxylic Acid; 3,3'-Dicarboxy-4,4'-dihydroxydiphenylmethane; 5,5'-Methylenebis(2-hydroxybenzoic Acid); MDSA; Methylene Disalicylic Acid; 2,2'-Methylenebis(5-hydroxybenzoic Acid)
EINECS	204-534-6

Quality Control

Our 5,5'-Methylenedisalicylic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and fine chemical applications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every shipment.

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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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