HTS US: 2831.XX.XXXX
Description
This heading encompasses chemical compounds classified as dithionites and sulfoxylates, which are important in various industrial applications such as bleaching, reducing agents, and chemical synthesis. These substances are predominantly characterized by their sulfur-containing anions and their reducing properties.
The heading includes sodium-based compounds as a primary subgroup, with specific chemicals such as sodium formaldehyde sulfoxylate explicitly identified. Other compounds within this category are grouped based on their chemical composition and industrial usage.
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 2831: Dithionites and sulfoxylates
- US HTS Code (10-digit):
2831.XX.XXXX– Specifies the exact compound and its chemical variant.
Detailed Breakdown of Subheadings
The 4-digit heading 2831 is subdivided into more specific 6-digit and 10-digit codes, distinguishing chemical types primarily by their sodium content and specific compound identity.
| HS/HTS Code | Description | Examples & Notes |
|---|---|---|
| 2831.10 | Of sodium: | Compounds containing sodium as the principal cation. |
2831.10.10.00 |
Sodium formaldehyde sulfoxylate | Used as a reducing agent and in textile bleaching processes. |
2831.10.50.00 |
Other sodium-based dithionites and sulfoxylates | Includes various sodium salts not specifically identified elsewhere. |
| 2831.90.00.00 | Other | Other dithionites and sulfoxylates not containing sodium or not specified above. |
What is NOT Classified Here?
To ensure accurate classification, the following are excluded:
- Compounds not classified as dithionites or sulfoxylates, such as other sulfur compounds with different chemical structures.
- Complex mixtures or preparations containing these chemicals but primarily classified under different headings.
- Organic compounds without the specific dithionite or sulfoxylate functional groups.
Notes
- Industrial Usage: These chemicals are widely used in industries such as textiles, paper, and photography due to their reducing properties.
- Safety and Handling: Due to their chemical reactivity, proper handling and safety measures are critical during storage and use.
- Duty Rates: Import duty rates vary depending on the exact compound and country of origin; consult the latest USHTS for details.
Declaration Example
Product: Shipment of sodium formaldehyde sulfoxylate for textile industry use.US HTS Code:
2831.10.10.00(Sodium formaldehyde sulfoxylate)Unit of Quantity: Kilogram (kg)
General Duty Rate: Refer to current USHTS schedule (subject to chemical regulations)
Additional Requirements: Compliance with chemical import regulations and safety standards.
Related HTS Codes
- HTS 2829: Chlorides and chloride oxides; bromides and bromide oxides; iodides and iodide oxides
- HTS 2833: Sulfides; polysulfides
- HTS 2811: Other inorganic acids and inorganic oxygen compounds of non-metals
- HTS 2841: Salts of oxometallic or peroxometallic acids
