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💾 Data Updated: Latest version • Last updated: December 09, 2025

2833.30.00.00 - Alums 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)1.6%
Special Rate of Duty (Column 1 - Special)Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
A 🇦🇫 🇦🇱 🇩🇿 🇦🇴 🇦🇮 🇦🇷 🇦🇲 🇦🇿 🇧🇿 🇧🇯 🇧🇹 🇧🇴 🇧🇦 🇧🇼 🇧🇷 🇮🇴 🇻🇬 🇧🇫 🇧🇮 🇨🇻 🇰🇭 🇨🇲 🇨🇫 🇹🇩 🇨🇽 🇨🇨 🇰🇲 🇨🇰 🇨🇮 🇨🇩 🇩🇯 🇩🇲 🇪🇨 🇪🇬 🇪🇷 🇸🇿 🇪🇹 🇫🇰 🇫🇯 🇬🇦 🇬🇲 🇵🇸 🇬🇪 🇬🇭 🇬🇩 🇬🇳 🇬🇼 🇬🇾 🇭🇹 🇭🇲 🇮🇩 🇮🇶 🇯🇲 🇯🇴 🇰🇿 🇰🇪 🇰🇮 KO 🇰🇬 🇱🇧 🇱🇸 🇱🇷 🇲🇬 🇲🇼 🇲🇻 🇲🇱 🇲🇷 🇲🇺 🇲🇩 🇲🇳 🇲🇪 🇲🇸 🇲🇿 🇲🇲 🇳🇦 🇳🇵 🇳🇪 🇳🇬 🇳🇺 🇳🇫 🇲🇰 🇵🇰 🇵🇬 🇵🇾 🇵🇭 🇵🇳 🇨🇬 🇷🇼 🇸🇭 🇱🇨 🇻🇨 🇼🇸 🇸🇳 🇷🇸 🇸🇱 🇸🇧 🇸🇴 🇿🇦 🇸🇸 🇱🇰 🇸🇷 🇸🇹 🇹🇿 🇹🇭 🇹🇱 🇹🇬 🇹🇰 🇹🇴 🇹🇳 🇹🇻 🇺🇬 🇺🇦 🇺🇿 🇻🇺 🇼🇫 🇵🇸 🇪🇭 🇾🇪 🇿🇲 🇿🇼
AU 🇦🇺
BH 🇧🇭
CL 🇨🇱
CO 🇨🇴
D 🇦🇴 🇧🇯 🇧🇼 🇧🇫 🇨🇻 🇨🇫 🇹🇩 🇰🇲 🇨🇮 🇨🇩 🇩🇯 🇸🇿 🇪🇹 🇬🇦 🇬🇲 🇬🇭 🇬🇳 🇬🇼 🇰🇪 🇱🇸 🇱🇷 🇲🇬 🇲🇼 🇲🇱 🇲🇺 🇲🇿 🇳🇦 🇳🇪 🇳🇬 🇨🇬 🇷🇼 🇸🇳 🇸🇱 🇿🇦 🇸🇹 🇹🇿 🇹🇬 🇺🇬 🇿🇲
E 🇦🇬 🇦🇼 🇧🇸 🇧🇧 🇧🇿 🇻🇬 🇨🇼 🇩🇲 🇬🇩 🇬🇾 🇭🇹 🇯🇲 🇲🇸 NE 🇰🇳 🇱🇨 🇻🇨 🇹🇹
IL 🇮🇱
JO 🇯🇴
KR 🇰🇷
MA 🇲🇦
OM 🇴🇲
P 🇨🇷 🇩🇴 🇸🇻 🇬🇹 🇭🇳 🇳🇮
PA 🇵🇦
PE 🇵🇪
S 🇨🇦 🇲🇽
SG 🇸🇬
Column 2 Rate of Duty25%
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

HTS code 2833.30.00.00 specifically classifies "Alums." Alums are a group of hydrated double sulfates, typically consisting of a monovalent metal sulfate and a trivalent metal sulfate. Common examples include aluminum potassium sulfate (potassium alum), aluminum ammonium sulfate, and chromium potassium sulfate. These compounds are generally characterized by their astringent properties and their use in various industrial applications such as water purification, dyeing, tanning, and in food additives as setting agents.

This classification is distinct from its sibling categories. HTS 2833.20 and 2833.10 cover various other sulfates of metals, which may be single sulfates or salts of sulfuric acid with different cations, but do not possess the specific double sulfate structure characteristic of alums. Furthermore, HTS 2833.40 differentiates peroxosulfates (persulfates), which are sulfate salts containing the peroxodisulfate (S₂O₈²⁻) anion, a different chemical structure and reactivity profile compared to alums.

As this is a leaf node within the HTS classification system, there are no further subcategories under 2833.30.00.00. Classification within this code will therefore rely on the precise chemical composition meeting the definition of an alum, rather than further subdivision based on specific types of alums.

Frequently Asked Questions

›What is HTS code 2833.30.00.00?
HTS code 2833.30.00.00 covers Alums under the US Harmonized Tariff Schedule. It falls under Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes.
›What products are classified under 2833.30.00.00?
This classification covers Alums. It is a subcategory of Sulfates; alums; peroxosulfates (persulfates): (2833).
›What is the import duty rate for 2833.30.00.00?
The general rate of duty for HTS 2833.30.00.00 is 1.6%. Special preferential rates may apply: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG). The Column 2 rate is 25%.
›What unit of quantity is used for 2833.30.00.00?
Imports under HTS 2833.30.00.00 are measured in kg.
›Are there special tariff programs for 2833.30.00.00?
Yes, preferential rates may apply under programs including: Generalized System of Preferences (GSP) (duty-free treatment)., Australia Special Rate, Bahrain Special Rate, Chile Special Rate, Colombia Special Rate. And 12 more programs.
Go up to 2833 · Go up to Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

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