HEADING 2833

Sulfates; alums; peroxosulfates (persulfates):

Part of Chapter 28 — Inorganic Chemicals, Section VI.

Subheadings and tariff lines

2833D01Sodium sulfates:

2833.11Disodium sulfate: 2833.11.10.00Salt cake 2833.11.50Other 2833.11.50.10Anhydrous 2833.11.50.50Other 2833.19.00.00Other

2833D02Other sulfates:

2833.21.00.00Of magnesium 2833.22.00.00Of aluminum 2833.24.00.00Of nickel 2833.25.00.00Of copper 2833.27.00.00Of barium 2833.29Other: 2833.29.10.00Of cobalt 2833.29.20.00Of iron 2833.29.30.00Of vanadium 2833.29.40.00Of chromium 2833.29.45.00Of zinc 2833.29.51Other 2833.29.51.10Of manganese 2833.29.51.90Other 2833.30.00.00Alums 2833.40Peroxosulfates (persulfates): 2833.40.20.00Of sodium 2833.40.60Other 2833.40.60.10Of potassium 2833.40.60.20Of ammonium 2833.40.60.50Other

Recent CBP rulings on heading 2833

N348656 May 27, 2025

The tariff classification of Nickel Sulfate from Finland

N325291 April 28, 2022

The tariff classification of potassium nitrate, magnesium sulfate heptahydrate, ammonium dihydrogenorthophosphate, potassium dihydrogenorthophosphate, and potassium sulfate from Japan

N270829 December 18, 2015

The tariff classification of Barium Sulfate (CAS # 7727-43-7) from Japan

N249557 February 18, 2014

The tariff classification of sodium bisulfate (CAS# 7681-38) from China

N233988 November 2, 2012

The tariff classification and status under the North American Free Trade Agreement (NAFTA), of instant hot packs from Canada; Article 509

N174096 August 4, 2011

The tariff classification of Calcium Nitrate Tetrahydrate (CAS # 13477-34-4), Copper (II) Sulfate Pentahydrate (CAS # 7758-99-8), Magnesium Sulfate Heptahydrate (CAS # 10034-99-8), Manganese (II) Sulfate Pentahydrate (CAS # 15244-3-7), and Zinc Sulfate Heptahydrate (CAS # 7446-20-0) from an unspecified country

N076275 October 9, 2009

The tariff classification of Tribasic lead sulfate, CAS No. 12202-17-4, Dibasic lead phosphite, CAS No. 1334-40-7, and Dibasic lead phthalate, CAS No. 57142-78-6, from Korea

N043899 November 26, 2008

The tariff classification of self cooling eye mask, cushion and pillow filled with NASO4 (anhydrous sodium sulfate) and water from China

R02937 December 20, 2005

The tariff classification of Sodium Persulfate (CAS 7775-27-1) and Potassium Permanganate (CAS 7722-64-7) from China

R01467 March 8, 2005

The tariff classification of Potassium Hydrogen Peroxymonosulfate and Potassium Monopersulfate (CAS# 70693-62-8) from China

J87550 September 10, 2003

The tariff classification of Ferrous Sulphate Heptahydrate from Germany

J83745 May 19, 2003

COUNTRY OF ORIGIN MARKING OF APPLE SLICES MADE FROM IMPORTED APPLES.

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