Terephthalaldehyde CAS#623-27-8
Important Fine Chemical Intermediate: Terephthalaldehyde is a key downstream product of paraxylene and an essential raw material in fine chemical production.
High Reactivity for Polymerization: With two active aldehyde groups, it can undergo self-polymerization or copolymerization, enabling the synthesis of various polymer materials.
Versatile Material Applications: It is widely used in the production of fluorescent materials, catalyst carriers, and other high-performance polymer products.
Flexible Production Pathways: It can be manufactured through established processes such as chlorination of p-xylene followed by hydrolysis, ensuring reliable industrial supply.
Product Description of Terephthalaldehyde CAS#623-27-8
Terephthalaldehyde is an important fine chemical intermediate derived from paraxylene. Its molecular structure contains two active aldehyde groups, enabling it to undergo self-polymerization or copolymerization with other monomers to produce a variety of polymer materials. These polymers are widely used in the synthesis of fluorescent materials, catalyst carriers, and other high-performance macromolecular products.
Traditionally, terephthalaldehyde is produced through the chlorination of p-xylene followed by hydrolysis in the presence of nitric acid or metal oxide catalysts.
Terephthalaldehyde Chemical Properties
| Melting point | 114-116 °C (lit.) |
| Boiling point | 245-248 °C (lit.) |
| Density | 1,06 g/cm3 |
| Vapor pressure | 0.25-0.46Pa at 20-25℃ |
| Refractive index | 1.4800 (estimate) |
| Fp | 76 °C |
| Storage temp | Store below +30°C. |
| Solubility | 3g/l |
| Form | Crystalline Powder |
| Color | White to light yellow |
| Water Solubility | 3 g/L (50 ºC) |
| Sensitive | Air Sensitive |
| BRN | 385863 |
| InChIKey | KUCOHFSKRZZVRO-UHFFFAOYSA-N |
| LogP | 1 at 20.1℃ and pH6.6-6.8 |
| CAS DataBase Reference | 623-27-8(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,4-Benzenedicarboxaldehyde(623-27-8) |
| EPA Substance Registry System | 1,4-Benzenedicarboxaldehyde (623-27-8) |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-36/37 |
| Safety Statements | 22-24/25-36-26-37/39 |
| WGK Germany | 1 |
| RTECS | WZ0430000 |
| Hazard Note | Irritant |
| TSCA | Yes |
| HS Code | 29122900 |
| Hazardous Substances Data | 623-27-8(Hazardous Substances Data) |
Product Application of Terephthalaldehyde CAS#623-27-8
Terephthalaldehyde is primarily used in the production of whitening agents, resins, plastics, and pesticides. It is also involved in the synthesis of various organic compounds, including intermediates such as bromocyclopentane. In addition, it can be applied in the preparation of solid iodophor disinfectants, where surfactants act as carriers to form complexes with iodine. These disinfectants offer broad-spectrum activity, high efficiency, strong bactericidal performance, good stability, and safe usage, making them suitable for applications such as preoperative skin disinfection and the sanitation of the oral cavity, intestines, urethra, and cervical mucosa.
