Industrial grade 99% Terephthalaldehyde CAS 623-27-8

Certificate of Analysis-COA 

 Applications 

1. Monomer For Covalent Organic Frameworks And Polyimines: As a rigid dialdehyde it condenses with amines to build imine linked networks, making it the aldehyde partner behind polyimine Schiff base polymers and crystalline COF powders, including thin film COF membranes made by interfacial polymerisation.

2. Building Block For Polyazomethine Conjugated Polymers: Reacting it with aliphatic or aromatic diamines gives polyazomethines whose conductivity and optical behaviour are tuned through the choice of amine, which places it in the monomer set for conductive and optoelectronic polymer work.

3. Crosslinker For Chitosan And PVA Hydrogels: Published work reports it as a better crosslinking agent than glutaraldehyde in chitosan hydrogels, where the bridges it forms build the network that takes up anionic dyes from wastewater.

4. Intermediate For Dyes And Fluorescent Whitening Agents: It is the established intermediate for preparing dyes and fluorescent whitening agents, where its two aldehyde groups are converted into the chromophores that give colour or brightness to the finished product.

5. Protein Crosslinker For Diagnostics And Bioconjugation: With two aldehyde groups it crosslinks proteins through their amine functions, so it is used in diagnostic reagent manufacturing and bioconjugation work to stabilise conjugates and build functional assay components.

 Production Line

We operate 10+ production lines, backed by a well-stocked raw material warehouse.

Our workshop is equipped with automated machinery — ensuring high consistency and precision on every order, from trial samples to full container loads.

Every order follows a standardized workflow. Key quality control points are set at every stage.

 Factory Area

Standardized Process Flow

Production Capacity

Located in Shandong, our factory is approximately 300km from Qingdao Port, enabling fast and cost-effective delivery to customers worldwide.