A Ready Chemistry Package: Making Chemistry Less Evil temperature periodically as you mix the ingredients for this creative endeavor. It should not exceed 70°C As the temperature goes up, it can become hazardous to phosgene. When you stir the mixture, you allow it to mix properly and react.
Add Caustic Soda: It is now time to add caustic soda after the reaction is completed. This chemical essentially neutralizes any acid present in the mixture, cleaning it off. This process is very important for safety and purity of the final product.
Purify the MDI mixture: You must then clean the mixture using a distillation column to ensure that your MDI isocyanate is as clean as possible. This improves the overall purity of the final product by removing residual phosgene, MDA, and any other undesirable compounds that may still be present in the reaction mixture. A major part of the process is purification!
Purity Testing: Now that the cleaning is complete, it is time to find out if your MDI isocyanate is pure or not. Should you find some impurity within it, then you would need to re-clean it so you can get yourself to a proper product. And this is important, both in quality and efficacy.
A few things about MDI isocyanate tips.
Useful tips here to ensure that you produce the best MDI isocyanate possible
Good Chemical: Only use good chemicals after the preparation of MDI isocyanate. Use very clean MDA and phosgene. Quality ingredients will ensure you cook a better end product.
