HTS US: 2836.XX.XXXX
Description
HTS Code 2836 covers a range of carbonate compounds, including carbonates, peroxocarbonates (also known as percarbonates), and commercial ammonium carbonate that contains ammonium carbamate. These substances are primarily inorganic chemical compounds widely used in various industrial, commercial, and pharmaceutical applications.
The heading includes:
- Carbonates of major alkali and alkaline earth metals: such as sodium, potassium, calcium, barium, lithium, and strontium carbonates.
- Peroxocarbonates (Percarbonates): oxygen-rich compounds used often as bleaching agents.
- Commercial ammonium carbonate: a mixture containing ammonium carbamate, commonly used in baking and chemical industries.
These compounds can appear in different purities and grades, such as U.S.P. (United States Pharmacopeia) grade for lithium carbonates, indicating suitability for pharmaceutical use.
Code Hierarchy
- Section VI: Products of the Chemical or Allied Industries (Chapters 28-38)
- Chapter 28: Inorganic Chemicals; Organic or Inorganic Compounds of Precious Metals, of Rare-Earth Metals, of Radioactive Elements or of Isotopes
- Heading 2836: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate.
- US HTS Code (10-digit):
2836.XX.XX.XX– Specific codes identify exact chemical substances and their commercial forms.
Detailed Breakdown of Subheadings
The 4-digit heading 2836 is divided into subheadings based on the specific carbonate compound and its chemical form.
| HS/HTS Code | Description | Examples & Notes |
|---|---|---|
| 2836.20.00.00 | Disodium carbonate | Also known as soda ash; widely used in glass manufacturing, detergents, and water treatment. |
| 2836.30.00.00 | Sodium hydrogencarbonate (Sodium bicarbonate) | Commonly known as baking soda; used in cooking, cleaning, and pharmaceutical applications. |
| 2836.40 | Potassium carbonates: | Includes compounds of potassium with carbonate and bicarbonate forms. |
| 2836.40.10.00 | Dipotassium carbonate | Used in food processing and industrial applications. |
| 2836.40.20.00 | Potassium hydrogencarbonate (Potassium bicarbonate) | Used as a leavening agent and in fire extinguishers. |
| 2836.50.00.00 | Calcium carbonate | Extensively used as a filler material, antacid, and in construction. |
| 2836.60.00.00 | Barium carbonate | Used in ceramics, glass production, and as a rat poison. |
| 2836.91.00 | Lithium carbonates | Important in battery manufacturing and pharmaceutical industries. |
| 2836.91.00.10 | U.S.P. grade | Pharmaceutical grade lithium carbonate. |
| 2836.91.00.50 | Other | Non-pharmaceutical grade lithium carbonates. |
| 2836.92.00.00 | Strontium carbonate | Used in pyrotechnics, ceramics, and electronics. |
| 2836.99 | Other: | Miscellaneous carbonates not classified elsewhere. |
| 2836.99.10.00 | Cobalt carbonates | Used in pigment production and catalysts. |
| 2836.99.20.00 | Bismuth carbonate | Applied in pharmaceuticals and cosmetics. |
| 2836.99.30.00 | Commercial ammonium carbonate and other ammonium carbonates | Used as a leavening agent and in chemical synthesis. |
| 2836.99.40.00 | Lead carbonates | Utilized in paints and ceramics but regulated due to toxicity. |
| 2836.99.50 | Other | Additional carbonates such as zirconium carbonates and others. |
| 2836.99.50.10 | Zirconium carbonates | Used in specialized industrial applications. |
| 2836.99.50.50 | Other | Miscellaneous carbonates not otherwise specified. |
What is NOT Classified Here?
To prevent misclassification, the following are excluded from this heading:
- Organic carbonates and related esters are classified under other chemical headings.
- Carbon dioxide and carbon monoxide gases fall under gaseous chemical classifications.
- Other inorganic compounds containing carbonate groups but chemically distinct are found in separate categories.
Notes
- Usage and Industry: Carbonates under this heading are fundamental in manufacturing glass, detergents, pharmaceuticals, food processing, and chemical industries.
- Purity Grades: Some carbonates, such as lithium carbonate, have pharmaceutical (U.S.P.) grades indicating strict quality control for medicinal use.
- Regulatory Considerations: Certain carbonates like lead carbonates are subject to strict regulations due to toxicity concerns.
- Tariff and Duty Rates: Duty rates vary by specific 10-digit code and intended use; some may be subject to import restrictions or require licenses.
Declaration Example
Product: Shipment of pharmaceutical grade lithium carbonate.US HTS Code:
2836.91.00.10(U.S.P. grade lithium carbonates)Unit of Quantity: Kilogram (kg)
General Duty Rate: Check current USHTS (Varies depending on grade and use)
Additional Requirements: Compliance with pharmaceutical import regulations and quality certification.
Related HTS Codes
- HTS 2815: Sodium hydroxide and potassium hydroxide.
- HTS 2833: Sulphates (e.g., calcium sulphate).
- HTS 2827: Chlorides, bromides, iodides.
- HTS 2841: Salts of oxometallic acids.
