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ECCN Lookup 2B350

  • AT

Chemical manufacturing facilities and equipment, except valves controlled by 2A226, as follows (see List of Items Controlled).

Category:
2 — Materials Processing
Product Group:
B — Test, Inspection & Production Equipment
Last updated:
2026-05-04

Items Covered

  • 1. Reaction vessels or reactors, with or without agitators, with total internal (geometric) volume greater than 0.1 m3 (100 liters) and less than 20 m3 (20,000 liters), where all surfaces that come in direct contact with the chemical(s) being processed or contained are made from any of the following materials:
  • a.1.a Alloys with more than 25% nickel and 20% chromium by weight;
    • 1.b. Nickel or alloys with more than 40% nickel by weight;
    • 1.c. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
    • 1.d. Glass (including vitrified or enameled coating or glass lining);
    • 1.e. Tantalum or tantalum alloys;
    • 1.f. Titanium or titanium alloys;
    • 1.g. Zirconium or zirconium alloys; or
    • 1.h. Niobium (columbium) or niobium alloys;
  • 2. Prefabricated repair assemblies, and their specially designed components, that:
  • 2.a. Are designed for mechanical attachment to glass-lined reaction vessels or reactors described in 2B350.a.1; and
  • 2.b. Have metallic surfaces that are made from tantalum or tantalum alloys and come in direct contact with the chemical(s) being processed.
  • b.Agitators designed for use in reaction vessels or reactors described in 2B350.a.1, and impellers, blades or shafts designed for such agitators, where all surfaces that come in direct contact with the chemical(s) being processed or contained are made from any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight;
    • 2. Nickel or alloys with more than 40% nickel by weight;
    • 3. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
    • 4. Glass (including vitrified or enameled coatings or glass lining);
    • 5. Tantalum or tantalum alloys;
    • 6. Titanium or titanium alloys;
    • 7. Zirconium or zirconium alloys; or
    • 8. Niobium (columbium) or niobium alloys.
  • c.Storage tanks, containers, receivers and prefabricated repair assemblies therefor, as follows:
    • 1. Storage tanks, containers or receivers with a total internal (geometric) volume greater than 0.1 m3 (100 liters) where all surfaces that come in direct contact with the chemical(s) being processed or contained are made from any of the following materials:
      • 1.a. Alloys with more than 25% nickel and 20% chromium by weight;
      • 1.b. Nickel or alloys with more than 40% nickel by weight;
      • 1.c. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
      • 1.d. Glass (including vitrified or enameled coatings or glass lining);
      • 1.e. Tantalum or tantalum alloys;
      • 1.f. Titanium or titanium alloys;
      • 1.g. Zirconium or zirconium alloys; or
      • 1.h. Niobium (columbium) or niobium alloys;
    • 2. Prefabricated repair assemblies, and their specially designed components, that:
      • 2.a. Are designed for mechanical attachment to glass-lined storage tanks, containers or receivers described in 2B350.c.1; and
      • 2.b. Have metallic surfaces that are made from tantalum or tantalum alloys and come in direct contact with the chemical(s) being processed.
  • d.Heat exchangers or condensers with a heat transfer surface area of less than 20 m2, but greater than 0.15 m2, and tubes, plates, coils or blocks (cores) designed for such heat exchangers or condensers, where all surfaces that come in direct contact with the chemical(s) being processed are made from any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight;
    • 2. Nickel or alloys with more than 40% nickel by weight;
    • 3. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
    • 4. Glass (including vitrified or enameled coatings or glass lining);
    • 5. Tantalum or tantalum alloys;
    • 6. Titanium or titanium alloys;
    • 7. Zirconium or zirconium alloys;
    • 8. Niobium (columbium) or niobium alloys;
    • 9. Graphite or carbon-graphite;
    • 10. Silicon carbide; or
    • 11. Titanium carbide.
  • e.Distillation or absorption columns of internal diameter greater than 0.1 m, and liquid distributors, vapor distributors or liquid collectors designed for such distillation or absorption columns, where all surfaces that come in direct contact with the chemical(s) being processed are made from any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight;
    • 2. Nickel or alloys with more than 40% nickel by weight;
    • 3. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
    • 4. Glass (including vitrified or enameled coatings or glass lining);
    • 5. Tantalum or tantalum alloys;
    • 6. Titanium or titanium alloys;
    • 7. Zirconium or zirconium alloys;
    • 8. Niobium (columbium) or niobium alloys; or
    • 9. Graphite or carbon-graphite.
  • f.Remotely operated filling equipment in which all surfaces that come in direct contact with the chemical(s) being processed are made from any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight; or
    • 2. Nickel or alloys with more than 40% nickel by weight.
  • g.Valves, as follows:
    • 1. Valves having both of the following characteristics:
      • 1.a. A nominal size greater than 1.0 cm (3⁄8 in.); and
      • 1.b. All surfaces that come in direct contact with the chemical(s) being produced, processed, or contained are made from materials identified in Technical Note 1 to 2B350.g.
    • 2. Valves, except for valves controlled by 2B350.g.1, having all of the following characteristics:
      • 2.a. A nominal size equal to or greater than 2.54 cm (1 inch) and equal to or less than 10.16 cm (4 inches);
      • 2.b. Casings (valve bodies) or preformed casing liners controlled by 2B350.g.3, in which all surfaces that come in direct contact with the chemical(s) being produced, processed, or contained are made from materials identified in Technical Note 1 to 2B350.g; and
      • 2.c. A closure element designed to be interchangeable.
    • 3. Casings (valve bodies) and preformed casing liners having both of the following characteristics:
      • 3.a. Designed for valves in 2B350.g.1 or .g.2; and
      • 3.b. All surfaces that come in direct contact with the chemical(s) being produced, processed, or contained are made from materials identified in Technical Note 1 to 2B350.g.
  • a.Alloys with more than 25% nickel and 20% chromium by weight;
  • b.Nickel or alloys with more than 40% nickel by weight;
  • c.Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
  • d.Glass (including vitrified or enameled coating or glass lining);
  • e.Tantalum or tantalum alloys;
  • f.Titanium or titanium alloys;
  • g.Zirconium or zirconium alloys;
  • h.Niobium (columbium) or niobium alloys; or
  • i.Ceramic materials, as follows:
    • 1. Silicon carbide with a purity of 80% or more by weight;
    • 2. Aluminum oxide (alumina) with a purity of 99.9% or more by weight; or
    • 3. Zirconium oxide (zirconia).
  • h.Multi-walled piping incorporating a leak detection port, in which all surfaces that come in direct contact with the chemical(s) being processed or contained are made from any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight;
    • 2. Nickel or alloys with more than 40% nickel by weight;
    • 3. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
    • 4. Glass (including vitrified or enameled coatings or glass lining);
    • 5. Tantalum or tantalum alloys;
    • 6. Titanium or titanium alloys;
    • 7. Zirconium or zirconium alloys;
    • 8. Niobium (columbium) or niobium alloys; or
    • 9. Graphite or carbon-graphite.
  • i.Multiple-seal and seal-less pumps with manufacturer's specified maximum flow-rate greater than 0.6 m3/hour (600 liters/hour), or vacuum pumps with manufacturer's specified maximum flow-rate greater than 5 m3/hour (5,000 liters/hour) (under standard temperature (273 K (0 °C)) and pressure (101.3 kPa) conditions), and casings (pump bodies), preformed casing liners, impellers, rotors or jet pump nozzles designed for such pumps, in which all surfaces that come into direct contact with the chemical(s) being processed are made from any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight;
    • 2. Nickel or alloys with more than 40% nickel by weight;
    • 3. Fluoropolymers (polymeric or elastomeric materials with more than 35% fluorine by weight);
    • 4. Glass (including vitrified or enameled coatings or glass lining);
    • 5. Tantalum or tantalum alloys;
    • 6. Titanium or titanium alloys;
    • 7. Zirconium or zirconium alloys;
    • 8. Niobium (columbium) or niobium alloys.
    • 9. Graphite or carbon-graphite;
    • 10. Ceramics; or
    • 11. Ferrosilicon (high silicon iron alloys).
  • j.Incinerators designed to destroy chemical warfare agents, chemical weapons precursors controlled by 1C350, or chemical munitions having "specially designed" waste supply systems, special handling facilities and an average combustion chamber temperature greater than 1000 °C in which all surfaces in the waste supply system that come into direct contact with the waste products are made from or lined with any of the following materials:
    • 1. Alloys with more than 25% nickel and 20% chromium by weight;
    • 2. Nickel or alloys with more than 40% nickel by weight; or
    • 3. Ceramics.

Control Reasons Explained

This ECCN is controlled for the following reasons. Each reason maps to a column on the Commerce Country Chart, which determines whether a license is required for a given destination.

ATAnti-Terrorism
Basic anti-terrorism controls that apply to most items on the CCL. A license is required for exports to countries designated as state sponsors of terrorism.

Common Questions About 2B350

What does ECCN 2B350 cover?
ECCN 2B350 is an entry on the Commerce Control List (Materials Processing). The List of Items Controlled below describes the products, software, or technology captured by this classification. Compare your item against those parameters when self-classifying.
How do license requirements work for this ECCN?
License need depends on the control reasons shown for this code (for example NS, RS, MT, AT), the destination country, and how your transaction maps against the Commerce Country Chart, de minimis, and other EAR provisions. This page is a research aid only. Confirm against the current rule text and your specific facts before exporting.
Where is the official text for this ECCN?
The legal text appears in Supplement No. 1 to part 774 of the Export Administration Regulations (15 CFR Part 774). Use the official BIS link on this page to open the current supplement entry for this ECCN.
What if my product matches more than one ECCN?
When several ECCNs appear to fit, the controlling entry is usually the one that is most specific to your item's form, function, or technical limits. Cross-references in the List of Items Controlled and related ECCNs listed on this page are common starting points for narrowing the choice.
How often should I re-check this classification?
The Commerce Control List changes when BIS publishes new or amended rules. Revisit the official entry when regulations update, when the product's technical parameters change, or when the destination, end-user, or end-use of a transaction changes.
What do the control reason codes mean?
Each control reason (NS, RS, MT, AT, etc.) maps to a column on the Commerce Country Chart in Supplement No. 1 to part 738 of the EAR. When a control reason applies to your ECCN and the destination country has an X in that column, a license is generally required unless an exception applies. See the Control Reasons Explained section on this page for details on each code.

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