About HS Code 391190
This 'basket' code covers a variety of specialized synthetic polymers in primary forms not elsewhere specified in Chapter 39, specifically highlighting polysulphides and polysulphones. These high-performance polymers are known for their excellent chemical resistance, high-temperature stability, and mechanical strength. Polysulphides are often used in sealants, adhesives, and coatings, particularly in aerospace and construction, due to their flexibility and solvent resistance. Polysulphones find applications in membranes, medical devices, and electrical components due to their toughness, transparency, and ability to withstand harsh environments. Importers are typically advanced manufacturing industries requiring materials for demanding environments. Exporters are specialized chemical producers. The international trade reflects the niche but critical demand for these advanced materials in high-value applications where standard polymers fall short.
Products Under This Code
Polysulphide polymers, Polysulphone (PSU) granules, Polyethersulphone (PES) powder, Polyphenylsulphone (PPSU) pellets, Polyketones, Polyimides, Polybenzimidazoles
Real World Examples
Solvay Udel PSU, BASF Ultrason PES, Arkema Kynar PVDF (high-performance polymer), Toray PPSU
Common Misclassification
This is a residual category, so confusion can arise with other specific high-performance polymers if their exact chemical structure is not identified, or with finished articles made from these polymers (e.g., membranes in Chapter 84).
Products Classified Under 3911.90
Industry
This code belongs to the Plastics & Rubber industry.
Trade Overview
Germany, the USA, and Japan are major producers and exporters of these advanced polymers, with global demand from high-tech industries.
Frequently Asked Questions
What is HS code 391190?
HS code 391190 covers: Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary forms. This 'basket' code covers a variety of specialized synthetic polymers in primary forms not elsewhere specified in Chapter 39, specifically highlighting polysulphides and polysulphones. These high-performance polymers are known for their excellent chemical resistance, high-temperature stability, and mechanical strength. Polysulphides are often used in sealants, adhesives, and coatings, particularly in aerospace and construction, due to their flexibility and solvent resistance. Polysulphones find applications in membranes, medical devices, and electrical components due to their toughness, transparency, and ability to withstand harsh environments. Importers are typically advanced manufacturing industries requiring materials for demanding environments. Exporters are specialized chemical producers. The international trade reflects the niche but critical demand for these advanced materials in high-value applications where standard polymers fall short.
What products fall under HS code 391190?
Polysulphide polymers, Polysulphone (PSU) granules, Polyethersulphone (PES) powder, Polyphenylsulphone (PPSU) pellets, Polyketones, Polyimides, Polybenzimidazoles
What are common misclassifications for HS code 391190?
This is a residual category, so confusion can arise with other specific high-performance polymers if their exact chemical structure is not identified, or with finished articles made from these polymers (e.g., membranes in Chapter 84).
How is HS code 391190 structured?
HS code 391190 is a 6-digit subheading under the Harmonized System. The first 2 digits (39) identify the chapter, digits 3-4 (11) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.