About HS Code 390931
This HS code specifically covers poly(methylene phenyl isocyanate), commonly known as Crude MDI or polymeric MDI, in its primary forms. MDI is a critical intermediate chemical in the production of polyurethanes, which are incredibly versatile polymers. International trade in MDI primarily involves large chemical manufacturers exporting to industries that produce a vast array of end products, including rigid and flexible foams for insulation, furniture, and automotive seating, as well as coatings, adhesives, sealants, and elastomers. Key things to know are its role as a foundational building block for polyurethane systems, its global demand driven by construction, automotive, and appliance sectors, and the need for specialized handling due to its reactive nature. Major players in this trade are global chemical giants, and its supply chain is crucial for numerous manufacturing sectors worldwide.
Products Under This Code
Polymeric MDI, Crude MDI, MDI prepolymers, MDI-based rigid foam systems, MDI-based binders, MDI-based elastomers, MDI-based adhesive components
Real World Examples
BASF Lupranate MDI, Covestro Desmodur MDI, Dow PAPI MDI, Wanhua Wannate MDI
Common Misclassification
This code can be confused with other amino-resins under 390939 if the specific MDI chemical identity is not clearly established, or with finished polyurethane products under 390950 or later chapters if not in primary forms.
Products Classified Under 3909.31
Industry
This code belongs to the Plastics & Rubber industry.
Trade Overview
Major producers and exporters include China, Germany, and the USA, while importers are globally diverse, particularly in developing industrial economies.
Frequently Asked Questions
What is HS code 390931?
HS code 390931 covers: Amino-resins; n.e.c. in heading no. 3909, in primary forms, poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI). This HS code specifically covers poly(methylene phenyl isocyanate), commonly known as Crude MDI or polymeric MDI, in its primary forms. MDI is a critical intermediate chemical in the production of polyurethanes, which are incredibly versatile polymers. International trade in MDI primarily involves large chemical manufacturers exporting to industries that produce a vast array of end products, including rigid and flexible foams for insulation, furniture, and automotive seating, as well as coatings, adhesives, sealants, and elastomers. Key things to know are its role as a foundational building block for polyurethane systems, its global demand driven by construction, automotive, and appliance sectors, and the need for specialized handling due to its reactive nature. Major players in this trade are global chemical giants, and its supply chain is crucial for numerous manufacturing sectors worldwide.
What products fall under HS code 390931?
Polymeric MDI, Crude MDI, MDI prepolymers, MDI-based rigid foam systems, MDI-based binders, MDI-based elastomers, MDI-based adhesive components
What are common misclassifications for HS code 390931?
This code can be confused with other amino-resins under 390939 if the specific MDI chemical identity is not clearly established, or with finished polyurethane products under 390950 or later chapters if not in primary forms.
How is HS code 390931 structured?
HS code 390931 is a 6-digit subheading under the Harmonized System. The first 2 digits (39) identify the chapter, digits 3-4 (09) identify the heading, and digits 5-6 (31) specify the subheading. This code is standardized globally by the World Customs Organization.