TDI-80/20 Tolylene diisocyanate CAS 584-84-9

Toluene diisocyanate (TDI) 80/20, with the CAS number 584-84-9, is a significant industrial chemical primarily used in the production of polyurethanes. This compound is a mixture of two isomers: approximately 80% of 2,4-toluene diisocyanate and 20% of 2,6-toluene diisocyanate.
Chemical Properties
Molecular Formula: C9H6N2O2
Appearance: TDI 80/20 is typically a clear to pale yellow liquid with a pungent odor.
Purity: High purity levels are common, often exceeding 99%.
Toxicity: It is classified as toxic and can be a direct irritant to the skin, eyes, and respiratory system.
Applications
TDI 80/20 is predominantly utilized in various applications, including:
Polyurethane Production: It is a key raw material for manufacturing flexible polyurethane foams, which are used in furniture, automotive seating, and insulation materials.
Coatings and Adhesives: TDI is also employed in producing high-performance coatings, elastomers, and adhesives, enhancing durability and flexibility in these products.
Specifications
Typical specifications for TDI 80/20 include:
Isomer Ratio: 80% 2,4-isomer and 20% 2,6-isomer
Acidity (as HCl): Generally less than 0.004%
Hydrolyzable Chloride: Typically below 0.01%.
Safety and Handling
Due to its toxic nature, proper safety measures must be taken when handling TDI 80/20. This includes using personal protective equipment (PPE) to prevent skin and respiratory exposure. It is essential to follow regulatory guidelines for storage and disposal to mitigate environmental and health risks.
In summary, TDI 80/20 is a crucial chemical in the production of polyurethanes and related materials, characterized by its high reactivity and toxicity. Its applications span various industries, making it an important compound in modern manufacturing processes.