Base
HTS 8506.30Chapter 85

HTS 8506.30Mercuric oxide: Duty Rate & Import Guide

Electrical Machinery and Equipment · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Data compiled from USITC HTS, CBP CROSS Rulings, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-28 · Updates daily

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (3)

CodeDescriptionRate
8506.30Mercuric oxide:
8506.30.10.00Having an external volume not exceeding <il>300 cm<sup>3</sup></il>2.7%
8506.30.50.00Other2.7%

CBP Rulings (2)

966022Classification

Revocation of NY D83627; alkaline batteries from Belgium

966038Classification

Modification of NY I84002; alkaline batteries

Matching Export Code (Schedule B)

8506301000Schedule B

PRIMARY BATTERIES HAVING AN EXTERNAL VOLUME NOT EXCEEDING 300 CM3, MERCURIAL OXIDE

Census Bureau export classification matching this HTS import code.

8506.10.00.908506.30.10.00