# United States tariff lines under HS 3507.90

> The United States tariff splits HS 3507.90 (enzymes; prepared enzymes not elsewhere specified or included) into 3 national lines: 3507.90.20.00 (pencillin G amidase), 3507.90.70.10 (enzymes – proteases, amylases, lipases, cellulases, pectinases, oxidases, and catalases) and 3507.90.70.80 (other). Every United States line under 3507.90 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/350790
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 35](https://border.bot/countries/united-states/hs-codes/35) / [3507.90](https://border.bot/countries/united-states/hs-codes/350790)

## Key facts

- HS subheading: [3507.90](https://border.bot/hs-codes/350790)
- Duty (MFN): Free
- National lines: 3
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 35: Albuminoidal substances; modified starches; glues; enzymes

## United States lines under 3507.90

The United States tariff splits HS 3507.90 (enzymes; prepared enzymes not elsewhere specified or included) into 3 national lines: 3507.90.20.00 (pencillin G amidase), 3507.90.70.10 (enzymes – proteases, amylases, lipases, cellulases, pectinases, oxidases, and catalases) and 3507.90.70.80 (other).

Every United States line under 3507.90 is free of general (MFN) duty.

- [3507.90.20.00](https://border.bot/countries/united-states/hs-codes/3507902000) Other, Pencillin G amidase. Duty (MFN): free
- [3507.90.70.10](https://border.bot/countries/united-states/hs-codes/3507907010) Other, Other, Enzymes – proteases, amylases, lipases, cellulases, pectinases, oxidases, and catalases. Duty (MFN): free
- [3507.90.70.80](https://border.bot/countries/united-states/hs-codes/3507907080) Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 3507.90 yet.

- [The Harmonized System text for 3507.90](https://border.bot/hs-codes/350790)

- Previous subheading: [3507.10](https://border.bot/countries/united-states/hs-codes/350710) Enzymes; prepared enzymes not elsewhere specified or included
- Next subheading: [3601.00](https://border.bot/countries/united-states/hs-codes/360100) Propellant powders

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3507.90?

The United States tariff splits HS 3507.90 (enzymes; prepared enzymes not elsewhere specified or included) into 3 national lines: 3507.90.20.00 (pencillin G amidase), 3507.90.70.10 (enzymes – proteases, amylases, lipases, cellulases, pectinases, oxidases, and catalases) and 3507.90.70.80 (other).

### What is the duty on HS 3507.90 in the United States?

Every United States line under 3507.90 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/350790.json