About HS Code 2833
HS Code 2833 encompasses sulphates, alums, and peroxosulphates (persulphates), a vast and economically significant category of inorganic chemicals. Sulphates, salts of sulphuric acid, are ubiquitous in industry. They include common compounds like magnesium sulphate (Epsom salt), calcium sulphate (gypsum), ammonium sulphate (a major fertilizer), and copper sulphate (fungicide, algicide). Their applications range from agriculture and construction to pharmaceuticals, pigments, and catalysts. Alums are a specific group of double sulphates, typically aluminum potassium sulphate or aluminum ammonium sulphate, primarily used in water purification as coagulants, in dyeing as mordants, and in leather tanning. Peroxosulphates, also known as persulphates, such as sodium persulphate and ammonium persulphate, are powerful oxidizing agents used as initiators for emulsion polymerization (e.g., in plastics production), as bleaching agents, and in etching solutions for printed circuit boards. The scope of this heading is broad, covering both chemically defined metallic and non-metallic sulphates, as well as the specialized alums and peroxosulphates. Precise classification under 2833 is crucial for accurate tariff application, adherence to agricultural regulations (for fertilizers), and compliance with environmental and safety standards, particularly for hazardous peroxosulphates. This heading, situated within Chapter 28, highlights the immense industrial importance and versatility of these sulfur-containing inorganic salts, distinguishing them by their specific chemical structures and diverse functionalities.
Products Under This Code
Magnesium sulphate (Epsom salt), Calcium sulphate (Gypsum), Ammonium sulphate, Copper sulphate, Zinc sulphate, Ferrous sulphate, Sodium sulphate, Potassium sulphate, Aluminium sulphate, Potassium alum, Ammonium alum, Sodium persulphate, Ammonium persulphate, Potassium persulphate, Barium sulphate, Chromic sulphate, Nickel sulphate, Cobalt sulphate, Manganese sulphate, Lead sulphate, Lithium sulphate, Strontium sulphate, Cadmium sulphate, Aluminium potassium sulphate, Aluminium ammonium sulphate
Real World Examples
A large agricultural cooperative in Brazil imports several bulk shipments of ammonium sulphate fertilizer from Russia via ocean bulk carriers to enhance crop yields. A municipal water treatment authority in the Philippines procures aluminum sulphate from a US manufacturer to clarify drinking water, typically transported in large containers. A health and wellness company in North America imports magnesium sulphate (Epsom salt) from China for bath salts and therapeutic products, usually via standard container freight. A German chemical company exports sodium persulphate to South Korea for use as a polymerization initiator in plastics manufacturing, often through specialized container shipping. An Indian construction firm imports large quantities of gypsum (calcium sulphate) from Oman for plaster and drywall production.
Common Misclassification
A common misclassification involves confusing sulphates (2833) with sulphites (2832) or other sulphur compounds. For instance, sodium sulphate must be clearly distinguished from sodium sulphite. The key is the sulphate anion (SO4(2-)). Alums are specifically double sulphates, not simple sulphates. Peroxosulphates, while containing sulphur, have a distinct peroxide linkage (-O-O-) that sets them apart from simple sulphates and other oxygenated sulphur compounds. Misclassifying these can lead to incorrect duty rates, especially for products like fertilizers which may have specific tariff lines or agricultural subsidies under Chapter 31 if they are in specific forms or mixtures, or for industrial chemicals with stringent safety regulations.
Subheadings 10
Industry
This code belongs to the Chemicals industry.
Trade Overview
China, the USA, Russia, Germany, and Canada are leading producers and exporters of sulphates, alums, and peroxosulphates, serving global markets. Major importers include countries with significant agricultural sectors (e.g., Brazil, India), large industrial bases (e.g., Southeast Asia, Europe), and developing infrastructure. Tariffs vary widely based on the specific compound and its end-use; for example, agricultural fertilizers may have different tariff treatments than industrial chemicals. Trade agreements can facilitate cross-border movement, but adherence to environmental, safety, and purity standards is critical for these widely used chemicals.
Frequently Asked Questions
What is HS code 2833?
HS code 2833 is a 4-digit heading in the Harmonized System that covers: Sulphates; alums; peroxosulphates (persulphates). HS Code 2833 encompasses sulphates, alums, and peroxosulphates (persulphates), a vast and economically significant category of inorganic chemicals. Sulphates, salts of sulphuric acid, are ubiquitous in industry. They include common compounds like magnesium sulphate (Epsom salt), calcium sulphate (gypsum), ammonium sulphate (a major fertilizer), and copper sulphate (fungicide, algicide). Their applications range from agriculture and construction to pharmaceuticals, pigments, and catalysts. Alums are a specific group of double sulphates, typically aluminum potassium sulphate or aluminum ammonium sulphate, primarily used in water purification as coagulants, in dyeing as mordants, and in leather tanning. Peroxosulphates, also known as persulphates, such as sodium persulphate and ammonium persulphate, are powerful oxidizing agents used as initiators for emulsion polymerization (e.g., in plastics production), as bleaching agents, and in etching solutions for printed circuit boards. The scope of this heading is broad, covering both chemically defined metallic and non-metallic sulphates, as well as the specialized alums and peroxosulphates. Precise classification under 2833 is crucial for accurate tariff application, adherence to agricultural regulations (for fertilizers), and compliance with environmental and safety standards, particularly for hazardous peroxosulphates. This heading, situated within Chapter 28, highlights the immense industrial importance and versatility of these sulfur-containing inorganic salts, distinguishing them by their specific chemical structures and diverse functionalities.
What products fall under HS code 2833?
Magnesium sulphate (Epsom salt), Calcium sulphate (Gypsum), Ammonium sulphate, Copper sulphate, Zinc sulphate, Ferrous sulphate, Sodium sulphate, Potassium sulphate, Aluminium sulphate, Potassium alum, Ammonium alum, Sodium persulphate, Ammonium persulphate, Potassium persulphate, Barium sulphate, Chromic sulphate, Nickel sulphate, Cobalt sulphate, Manganese sulphate, Lead sulphate, Lithium sulphate, Strontium sulphate, Cadmium sulphate, Aluminium potassium sulphate, Aluminium ammonium sulphate
What are common misclassifications for HS code 2833?
A common misclassification involves confusing sulphates (2833) with sulphites (2832) or other sulphur compounds. For instance, sodium sulphate must be clearly distinguished from sodium sulphite. The key is the sulphate anion (SO4(2-)). Alums are specifically double sulphates, not simple sulphates. Peroxosulphates, while containing sulphur, have a distinct peroxide linkage (-O-O-) that sets them apart from simple sulphates and other oxygenated sulphur compounds. Misclassifying these can lead to incorrect duty rates, especially for products like fertilizers which may have specific tariff lines or agricultural subsidies under Chapter 31 if they are in specific forms or mixtures, or for industrial chemicals with stringent safety regulations.
Which countries trade the most under HS code 2833?
China, the USA, Russia, Germany, and Canada are leading producers and exporters of sulphates, alums, and peroxosulphates, serving global markets. Major importers include countries with significant agricultural sectors (e.g., Brazil, India), large industrial bases (e.g., Southeast Asia, Europe), and developing infrastructure. Tariffs vary widely based on the specific compound and its end-use; for example, agricultural fertilizers may have different tariff treatments than industrial chemicals. Trade agreements can facilitate cross-border movement, but adherence to environmental, safety, and purity standards is critical for these widely used chemicals.
How is HS code 2833 structured?
HS code 2833 is a 4-digit heading under Chapter 28 of the Harmonized System. The first 2 digits (28) identify the chapter, and digits 3-4 (33) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.