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2833.30.00.00/Potassium Alum Crystals/Mexico

Potassium Alum Crystals from Mexico

Potassium alum (potassium aluminum sulfate, KAl(SO4)2·12H2O) is a double salt used in water purification, leather tanning, and as a styptic agent. It falls under HTS 2833.30.00.00 as it is a classic alum, a hydrated double sulfate of a monovalent cation and trivalent aluminum.

Duty Rate — Mexico → United States

11.6%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Verify purity and chemical composition via lab analysis to confirm 'alum' status; ensure SDS includes CAS number 10043-67-1

• Watch for misclassification as single sulfates

Potassium Alum Crystals from Mexico — Import Duty Rate | HTS 2833.30.00.00