# United States tariff line 2931.90.05.00: Diphenyldichlorosilane; and phenyltrichlorosilane

> In the United States tariff, line 2931.90.05.00 covers aromatic, diphenyldichlorosilane; and phenyltrichlorosilane. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2931.90 in heading 29.31 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2931900500
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) / [2931.90](https://border.bot/countries/united-states/hs-codes/293190) / [2931.90.05.00](https://border.bot/countries/united-states/hs-codes/2931900500)

## Key facts

- Tariff line: 2931.90.05.00
- Covers: Aromatic, diphenyldichlorosilane; and phenyltrichlorosilane
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2931.90](https://border.bot/hs-codes/293190)

## What this line covers

In the United States tariff, line 2931.90.05.00 covers aromatic, diphenyldichlorosilane; and phenyltrichlorosilane.

Its legal text is “Diphenyldichlorosilane; and phenyltrichlorosilane”, read under “Other” and “Aromatic”.

## How it is structured

It falls under HS subheading 2931.90 in heading 29.31 (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 29.31: Other organo-inorganic compounds
- Subheading 2931.90: Other
- Within the subheading: Aromatic
- Line 2931.90.05.00: Diphenyldichlorosilane; and phenyltrichlorosilane

## 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 2931.90 yet.

- [The Harmonized System text for 2931.90](https://border.bot/hs-codes/293190)

## Other lines under 2931.90

- [2931.90.10.00](https://border.bot/countries/united-states/hs-codes/2931901000) 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester
- [2931.90.15.00](https://border.bot/countries/united-states/hs-codes/2931901500) Sodium tetraphenylboron
- [2931.90.22.00](https://border.bot/countries/united-states/hs-codes/2931902200) Drugs
- [2931.90.26.00](https://border.bot/countries/united-states/hs-codes/2931902600) Pesticides
- [2931.90.30.00](https://border.bot/countries/united-states/hs-codes/2931903000) Products described in additional U.S. note 3 to section VI
- [2931.90.60.00](https://border.bot/countries/united-states/hs-codes/2931906000) Other
- [2931.90.70.00](https://border.bot/countries/united-states/hs-codes/2931907000) N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts
- [2931.90.90.10](https://border.bot/countries/united-states/hs-codes/2931909010) Organo-silicon compounds
- [2931.90.90.21](https://border.bot/countries/united-states/hs-codes/2931909021) Dibutyltin oxide
- [2931.90.90.25](https://border.bot/countries/united-states/hs-codes/2931909025) Tetrabutyltin
- [2931.90.90.29](https://border.bot/countries/united-states/hs-codes/2931909029) Other
- [2931.90.90.30](https://border.bot/countries/united-states/hs-codes/2931909030) 2-Chlorovinyldichloroarsine
- [2931.90.90.35](https://border.bot/countries/united-states/hs-codes/2931909035) Bis(2-chlorovinyl)chloroarsine
- [2931.90.90.40](https://border.bot/countries/united-states/hs-codes/2931909040) Tris(2-chlorovinyl)arsine
- [2931.90.90.52](https://border.bot/countries/united-states/hs-codes/2931909052) Other

- Previous line: [2931.59.00.80](https://border.bot/countries/united-states/hs-codes/2931590080) Other
- Next line: [2931.90.10.00](https://border.bot/countries/united-states/hs-codes/2931901000) 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester

## Frequently asked questions

### What does tariff line 2931.90.05.00 cover in the United States tariff?

In the United States tariff, line 2931.90.05.00 covers aromatic, diphenyldichlorosilane; and phenyltrichlorosilane.

### What is the general (MFN) duty on 2931.90.05.00 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/2931900500.json