For professionals in the chemical manufacturing sector, a thorough understanding of raw material specifications is paramount. Toluene Diisocyanate (TDI), a critical precursor for polyurethane production, is no exception. NINGBO INNO PHARMCHEM CO.,LTD. emphasizes the importance of precise chemical properties in our TDI offerings, ensuring optimal performance for our clients. This article provides an in-depth look at the technical specifications of Toluene Diisocyanate, detailing what makes it such a vital component in various industrial applications.

Toluene Diisocyanate (CAS: 26471-62-5), with the molecular formula C9H6N2O2, is an aromatic diisocyanate characterized by its high reactivity. The most commercially significant form is a mixture of isomers, typically comprising 80% 2,4-TDI and 20% 2,6-TDI. This specific isomeric ratio influences the reaction characteristics and the properties of the final polyurethane product. The purity of TDI is a key specification, with industrial grades usually guaranteed to be 99.5% or higher. High purity is essential to avoid side reactions that can affect the quality, color, and physical properties of the resulting polymers, whether they are used for flexible foams, coatings, or adhesives.

Beyond purity and isomeric composition, other critical properties of Toluene Diisocyanate include its acidity, color (measured on the APHA scale), and hydrolyzable chlorine content. Acidity, typically measured on an HCl basis, needs to be within specified low limits to prevent unwanted catalysis or degradation. The color value (often less than 25 APHA) is an indicator of product quality and stability. Hydrolyzable chlorine, also maintained at low levels (e.g., ≤ 100 ppm), is another important parameter, as it can affect the reaction and the stability of the final product. NINGBO INNO PHARMCHEM CO.,LTD. diligently monitors these parameters to ensure our TDI consistently meets the demanding requirements for polyurethane production.

The precise control over these chemical properties is what makes Toluene Diisocyanate such a reliable building block for polyurethane synthesis. By understanding the typical inspection results—such as a purity of 99.9%, an isomeric ratio of 80.2/19.8, an acidity of ≤ 40 ppm, a color of 10 APHA, and hydrolyzable chlorine of 45 ppm—manufacturers can confidently integrate our TDI into their processes. Our role as a leading supplier in China is built on providing not just the chemical, but the assurance of its quality and consistency, supporting our clients' success in the competitive polyurethane market. Exploring the technical details of TDI's specifications reveals its importance for achieving desired outcomes in various toluene diisocyanate uses.

In conclusion, the detailed chemical properties and specifications of Toluene Diisocyanate are fundamental to its effective use in the manufacturing of polyurethanes. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to providing TDI that adheres to the highest standards, ensuring optimal performance and reliability for all our industrial partners.