Description

Terephthalaldehyde Bis(Diethyl Acetal) CAS NO 20635-30-7 is a key protected derivative of terephthalaldehyde, serving as a versatile and stable synthetic intermediate. Its primary value lies in its role as a masked dialdehyde, which is crucial for controlled polymer synthesis and the creation of complex organic frameworks. This compound is essential for R&D chemists and production specialists in the pharmaceutical, agrochemical, and advanced materials sectors who require precise, multi-step organic transformations.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules where the protected aldehyde functionality prevents unwanted side reactions.
• Polymer & Resin Precursor: A critical monomer for the production of specialty polyacetals, polyesters, and high-performance engineering plastics with tailored thermal and mechanical properties.
• Ligand & Chelating Agent Synthesis: Employed in the preparation of sophisticated organic ligands for catalysis and metal-organic frameworks (MOFs).
• Agrochemical Synthesis: Serves as a building block for creating advanced herbicides, fungicides, and plant growth regulators.
• Cross-linking Agent: Used in coatings, adhesives, and composite materials to introduce stable acetal cross-links, enhancing durability and chemical resistance.
• Organic Synthesis Reagent: A valuable reagent in academic and industrial research for constructing aromatic systems with specific functional group patterns.

Basic Information

Product Name	Terephthalaldehyde Bis(Diethyl Acetal)
CAS No.	20635-30-7
Molecular Formula	C16H26O4
Molecular Weight	282.38 g/mol
Synonyms	1,4-Benzenedicarboxaldehyde, Bis(diethyl acetal); Terephthalaldehyde Diethyl Acetal; p-Phthalaldehyde Bis(diethyl acetal); 1,4-Bis(diethoxymethyl)benzene; Diethyl Terephthalaldehyde Acetal; TPA Bis-Acetal; Terephthalic Dialdehyde Bis(diethyl acetal); Benzene-1,4-diyldimethanediyl Bis(diethyl acetal)
EINECS	Contact for details

Quality Control

Our Terephthalaldehyde Bis(Diethyl Acetal) is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography and spectroscopy, to confirm identity and purity. 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, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and acids. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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