# United States tariff line 2907.29.15.00: 4,4'-Biphenol

> In the United States tariff, line 2907.29.15.00 covers polyphenols; phenol-alcohols, 4,4'-Biphenol. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2907.29 in heading 29.07 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2907291500
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2907.29](https://border.bot/countries/united-states/hs-codes/290729) / [2907.29.15.00](https://border.bot/countries/united-states/hs-codes/2907291500)

## Key facts

- Tariff line: 2907.29.15.00
- Covers: Polyphenols; phenol-alcohols, 4,4'-Biphenol
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2907.29](https://border.bot/hs-codes/290729)

## What this line covers

In the United States tariff, line 2907.29.15.00 covers polyphenols; phenol-alcohols, 4,4'-Biphenol.

Its legal text is “4,4'-Biphenol”, read under “Polyphenols; phenol-alcohols” and “Other”.

## How it is structured

It falls under HS subheading 2907.29 in heading 29.07 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 29: Organic chemicals
- Heading 29.07: Phenols; phenol-alcohols
- Subheading 2907.29: Polyphenols; phenol-alcohols
- Within the subheading: Other
- Line 2907.29.15.00: 4,4'-Biphenol

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 2907.29 yet.

- [The Harmonized System text for 2907.29](https://border.bot/hs-codes/290729)

## Other lines under 2907.29

- [2907.29.05.00](https://border.bot/countries/united-states/hs-codes/2907290500) Phenol-alcohols
- [2907.29.10.00](https://border.bot/countries/united-states/hs-codes/2907291000) Pyrogallic acid
- [2907.29.25.00](https://border.bot/countries/united-states/hs-codes/2907292500) tert-Butylhydroquinone
- [2907.29.90.00](https://border.bot/countries/united-states/hs-codes/2907299000) Other

- Previous line: [2907.29.10.00](https://border.bot/countries/united-states/hs-codes/2907291000) Pyrogallic acid
- Next line: [2907.29.25.00](https://border.bot/countries/united-states/hs-codes/2907292500) tert-Butylhydroquinone

## Frequently asked questions

### What does tariff line 2907.29.15.00 cover in the United States tariff?

In the United States tariff, line 2907.29.15.00 covers polyphenols; phenol-alcohols, 4,4'-Biphenol.

### What is the general (MFN) duty on 2907.29.15.00 in the United States?

Goods under this line enter 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/2907291500.json