Products Description
Polyphenyl polymethylene polyisocyanate, commonly abbreviated as PAPI and also known as crude MDI, is a light‑yellow to brown viscous liquid with a sharp, pungent odour. It has a relative density of 1.2 (20 °C/20 °C), a flash point of 218 °C and a freezing point below 10 °C. Its viscosity ranges from 200 to 1000 mPa·s when measured at 25 °C.
PAPI is a mixed composition containing approximately 50 % MDI and 50 % polyisocyanate components with functionality greater than two. It is prone to self‑polymerization under heated conditions. The material dissolves readily in common organic solvents such as chlorobenzene, o‑dichlorobenzene and toluene.
Products Chemical Properties
| Boiling point | 392 °C5 mm Hg |
| density | 1.2 g/mL at 25 °C(lit.) |
| vapor density | 8.6 (vs air) |
| refractive index | n20/D 1.634 |
| Fp | >230 °F |
| storage temp. | Refrigerator, Under inert atmosphere |
| solubility | DMSO (Sparingly), Ethyl Acetate (Slightly), Methanol (Soluble) |
| form | Oil |
| color | Yellow to Orange |
| Stability: | Stable. Incompatible with strong oxidizing agents, alcohols. May decompose in moist air, or on contact with water. |
| InChI | InChI=1S/C7H5NO.CH2O/c9-6-8-7-4-2-1-3-5-7;1-2/h1-5H;1H2 |
| InChIKey | JTEOXXUIKUHXLD-UHFFFAOYSA-N |
| SMILES | O=C=NC1C([H])=C([H])C([H])=C([H])C=1[H].O=C([H])[H] |
| IARC | 3 (Vol. 19, Sup 7) 1987 |
| EPA Substance Registry System | Polymeric diphenylmethane diisocyanate (9016-87-9) |
| Hazard Codes | Xn,T+,T,F |
| Risk Statements | 20-36/37/38-42-42/43-26-22-39/23/24/25-23/24/25-11-20/21/22 |
| Safety Statements | 26-28-38-45-36/37-23-16-7-36 |
| WGK Germany | 3 |
| RTECS | TR0350000 |
| Hazardous Substances Data | 9016-87-9(Hazardous Substances Data) |
Products Application
Polymethylene polyphenyl polyisocyanate is an essential raw material for the production of polyurethane‑based products. It is widely applied across the construction, automotive and electrical industries. Typical end‑products include thermal insulation materials, shock‑absorbing cushions, mattresses and many other polyurethane finished articles.
Company Profile
Located in Shandong’s premier chemical industrial cluster, Shandong Furuida Chemical Co., Ltd. focuses on global chemical trade. We run our own standardized production sites, enabling seamless integration of manufacturing, quality management, cross‑border commerce and international logistics, alongside self‑sufficient production and overseas market expansion capabilities.
We supply a broad spectrum of products: basic chemical raw materials, fine chemical intermediates, chemical additives, and rubber & plastic raw materials. These materials serve rubber‑plastic processing, coatings, daily‑use chemicals, construction and textile sectors. Beyond standard stock, we develop custom product solutions and provide full‑scope one‑stop foreign trade services, from customs clearance and logistics coordination to after‑sales technical assistance.
Many market participants struggle with volatile supply chains, markup costs from intermediaries, inconsistent product standards and late shipments. To mitigate these concerns, we operate on a factory‑direct supply basis with open, predictable pricing. Comprehensive quality assurance keeps product performance steady and reliable, and our sophisticated cross‑border logistics network cuts delivery lead times significantly.
Our commercial footprint extends across Asia, Europe, the Americas, the Middle East and further global markets. We partner with local and international chemical manufacturers, end‑processing facilities and cross‑border traders, supplying premium, cost‑effective chemical raw materials backed by dedicated professional services.
