Important Industrial Raw Material: PAPI, also known as crude MDI, is an important chemical raw material for various industrial applications.
High Functionality: With an average functionality greater than 2, it offers excellent reactivity for polymer and polyurethane production.
MDI-Polyisocyanate Composition: Composed of approximately 50% MDI and 50% polyisocyanate, providing versatile chemical performance.
Stable Physical Properties: Features a viscous liquid form, a density of approximately 1.1–1.2 g/cm³ at 20–25°C, and a relatively high boiling point.
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Product Description
Product Description-Polymethylene polyphenyl polyisocyanate CAS#9016-87-9
Polyphenyl polymethylene polyisocyanate (PAPI, crude MDI) is a key chemical raw material. It is a pale yellow to dark brown viscous or transparent brown liquid with a sharp odor. This mixture contains roughly 50% MDI and 50% polyisocyanate, with average functionality above 2. Its density ranges from 1.1–1.2 g/cm³ at 20–25°C; boiling point is 373.4°C at 760 mmHg or 392°C at 5 mmHg.
Product Applications-Polymethylene polyphenyl polyisocyanate CAS#9016-87-9
Polymethylene polyphenyl polyisocyanate is applied for polyurethane manufacturing. It is widely adopted in construction, automotive and electrical sectors for insulation, and also used in products like mattresses.
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Chemical Properties-Polymethylene polyphenyl polyisocyanate CAS#9016-87-9
Safety Information-Polymethylene polyphenyl polyisocyanate CAS#9016-87-9
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