# HS code 3825.50: Wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids

> HS code 3825.50 covers wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids. It sits in heading 38.25 (residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter) in chapter 38 (miscellaneous chemical products). Other goods of heading 38.25 are classified under 3825.10 (municipal waste), 3825.20 (sewage sludge), 3825.30 (clinical waste), 3825.41 (waste organic solvents, halogenated) or 4 others. National tariff lines under 3825.50 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/382550
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 38](https://border.bot/hs-codes/38) / [38.25](https://border.bot/hs-codes/3825) / [3825.50](https://border.bot/hs-codes/382550)

## Key facts

- HS code: 3825.50
- Covers: Wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids
- Heading: [38.25: Residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter](https://border.bot/hs-codes/3825)
- Chapter: [38: Miscellaneous chemical products](https://border.bot/hs-codes/38)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/382550)

## What this code covers

HS code 3825.50 covers wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids.

The legal text of the subheading is “Wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids”, in HS2022.

## What it doesn’t cover

Other goods of heading 38.25 are classified under 3825.10 (municipal waste), 3825.20 (sewage sludge), 3825.30 (clinical waste), 3825.41 (waste organic solvents, halogenated) or 4 others.

- [3825.10](https://border.bot/hs-codes/382510) Municipal waste
- [3825.20](https://border.bot/hs-codes/382520) Sewage sludge
- [3825.30](https://border.bot/hs-codes/382530) Clinical waste
- [3825.41](https://border.bot/hs-codes/382541) Waste organic solvents: Halogenated
- [3825.49](https://border.bot/hs-codes/382549) Waste organic solvents: Other
- [3825.61](https://border.bot/hs-codes/382561) Other wastes from chemical or allied industries: Mainly containing organic constituents
- [3825.69](https://border.bot/hs-codes/382569) Other wastes from chemical or allied industries: Other
- [3825.90](https://border.bot/hs-codes/382590) Other

## How it is structured

3825.50 is a six-digit subheading. Its first two digits, 38, are the chapter; the first four, 3825, are heading 38.25; the last two, 50, identify the subheading within the heading.

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

- Chapter 38: Miscellaneous chemical products
- Heading 38.25: Residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter
- Subheading 3825.50: Wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids

## In other countries

National tariff lines under 3825.50 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/382550): 1 line, used by 1 other country

- Previous subheading: [3825.49](https://border.bot/hs-codes/382549) Waste organic solvents: Other
- Next subheading: [3825.61](https://border.bot/hs-codes/382561) Other wastes from chemical or allied industries: Mainly containing organic constituents

## Frequently asked questions

### What does HS code 3825.50 cover?

HS code 3825.50 covers wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids.

### Which heading and chapter is HS code 3825.50 in?

HS code 3825.50 is in heading 38.25 (residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter) in chapter 38 (miscellaneous chemical products).

### Where are goods of heading 38.25 classified when 3825.50 doesn’t fit?

Other goods of heading 38.25 are classified under 3825.10 (municipal waste), 3825.20 (sewage sludge), 3825.30 (clinical waste), 3825.41 (waste organic solvents, halogenated) or 4 others.

### Which countries’ tariffs list national lines under HS code 3825.50?

National tariff lines under 3825.50 are live on border.bot for the United States (1 line, 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/382550.json