# HS code 3507.90: Enzymes; prepared enzymes not elsewhere specified or included

> HS code 3507.90 covers enzymes; prepared enzymes not elsewhere specified or included, other than those classified in 3507.10. It sits in heading 35.07 (enzymes; prepared enzymes not elsewhere specified or included) in chapter 35 (albuminoidal substances; modified starches; glues; enzymes). Other goods of heading 35.07 are classified under 3507.10 (rennet or concentrates thereof). National tariff lines under 3507.90 are live on border.bot for the United States (3 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/350790
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 35](https://border.bot/hs-codes/35) / [35.07](https://border.bot/hs-codes/3507) / [3507.90](https://border.bot/hs-codes/350790)

## Key facts

- HS code: 3507.90
- Covers: Enzymes; prepared enzymes not elsewhere specified or included
- Heading: [35.07: Enzymes; prepared enzymes not elsewhere specified or included](https://border.bot/hs-codes/3507)
- Chapter: [35: Albuminoidal substances; modified starches; glues; enzymes](https://border.bot/hs-codes/35)
- Edition: HS2022
- Duty in the United States: [See its 3 lines](https://border.bot/countries/united-states/hs-codes/350790)

## What this code covers

HS code 3507.90 covers enzymes; prepared enzymes not elsewhere specified or included, other than those classified in 3507.10.

The legal text of the subheading is “Other”, in HS2022.

## What it doesn’t cover

Other goods of heading 35.07 are classified under 3507.10 (rennet or concentrates thereof).

- [3507.10](https://border.bot/hs-codes/350710) Rennet and concentrates thereof

## How it is structured

3507.90 is a six-digit subheading. Its first two digits, 35, are the chapter; the first four, 3507, are heading 35.07; the last two, 90, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 35: Albuminoidal substances; modified starches; glues; enzymes
- Heading 35.07: Enzymes; prepared enzymes not elsewhere specified or included
- Subheading 3507.90: Other

## In other countries

National tariff lines under 3507.90 are live on border.bot for the United States (3 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/350790): 3 lines, used by 1 other country

- Previous subheading: [3507.10](https://border.bot/hs-codes/350710) Rennet and concentrates thereof
- Next subheading: [3601.00](https://border.bot/hs-codes/360100) Propellent powders

## Frequently asked questions

### What does HS code 3507.90 cover?

HS code 3507.90 covers enzymes; prepared enzymes not elsewhere specified or included, other than those classified in 3507.10.

### Which heading and chapter is HS code 3507.90 in?

HS code 3507.90 is in heading 35.07 (enzymes; prepared enzymes not elsewhere specified or included) in chapter 35 (albuminoidal substances; modified starches; glues; enzymes).

### Where are goods of heading 35.07 classified when 3507.90 doesn’t fit?

Other goods of heading 35.07 are classified under 3507.10 (rennet or concentrates thereof).

### Which countries’ tariffs list national lines under HS code 3507.90?

National tariff lines under 3507.90 are live on border.bot for the United States (3 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

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