What is HS code 281511 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-6 · Subheading
281511
Sodium hydroxide (caustic soda); solid
Heading 2815 — Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium
Chapter 28: Inorganic chemicals
Plain-language overview
Use HS-6 281511 when importing or exporting solid sodium hydroxide, commonly known as caustic soda. This product is often shipped in bulk as white, solid pellets or flakes, used in various industrial applications such as soap making and water treatment.
This code specifically covers solid forms of sodium hydroxide, distinguishing it from HS-6 281512, which refers to sodium hydroxide in solution. If you are dealing with liquid caustic soda, you will need to classify it under that separate line.
Sodium hydroxide is a key ingredient in many chemical processes, including the production of biodiesel and the manufacturing of textiles. It’s crucial to ensure you are using the correct HS code to avoid customs issues, especially when dealing with hazardous materials.
When shipping solid sodium hydroxide, be mindful of proper labeling and safety data sheets, as it is classified as a corrosive substance. This is important for compliance with transport regulations.
Keywords & topics
Useful terms traders and brokers use for this HS-6 subheading.
sodium hydroxide · caustic soda · solid sodium hydroxide · chemical manufacturing · water treatment · biodiesel production · textile industry · hazardous materials · industrial cleaning · pH adjustment · soap making · bulk shipment · safety data sheets · corrosive substances
Examples
Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.
- Bulk shipment of solid sodium hydroxide pellets for soap manufacturing
- Delivery of caustic soda flakes for water treatment facilities
- Export of sodium hydroxide for use in the textile industry
- Import of solid sodium hydroxide for biodiesel production
- Packaging of caustic soda in 25 kg bags for chemical processing
- Transport of sodium hydroxide in drums for industrial cleaning applications
- Supply of solid sodium hydroxide for pH adjustment in swimming pools
Common questions
Frequent classification questions with short practical guidance.
How to classify solid sodium hydroxide?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
Is sodium hydroxide a hazardous material?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are the shipping requirements for caustic soda?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Can I export solid sodium hydroxide?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What packaging is required for sodium hydroxide?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to label shipments of caustic soda?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What industries use HS code 281511?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Related topics
Common real-world topics that come up during code comparison.
How to correctly classify sodium hydroxide for customs?
Check the exact product specs and destination-country tariff notes before finalizing the code.
What are the regulations for shipping solid caustic soda?
Use this as a checklist topic, then confirm legal requirements with your broker or customs advisor.
Differences between solid and liquid sodium hydroxide HS codes
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
Best practices for packaging sodium hydroxide for export
Check the exact product specs and destination-country tariff notes before finalizing the code.
What safety measures are needed for transporting caustic soda?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
How to handle solid sodium hydroxide in industrial applications?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
What is the end-use of sodium hydroxide in the textile industry?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Guidelines for importing sodium hydroxide into the US
Check the exact product specs and destination-country tariff notes before finalizing the code.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What is the difference between HS-6 281511 and HS-6 281512?
- HS-6 281511 covers solid sodium hydroxide, while HS-6 281512 refers to sodium hydroxide in solution. Ensure you classify based on the physical state of the product.
- Is sodium hydroxide considered a hazardous material?
- Yes, sodium hydroxide is classified as a corrosive substance. Proper safety measures and labeling are required when handling and shipping.
- What industries commonly use solid sodium hydroxide?
- Solid sodium hydroxide is widely used in soap making, water treatment, textile manufacturing, and biodiesel production.
- What packaging is recommended for shipping sodium hydroxide?
- Sodium hydroxide should be packaged in moisture-proof bags or containers, typically in 25 kg bags or drums, to prevent exposure to air and moisture.
- What are the customs requirements for importing sodium hydroxide?
- When importing sodium hydroxide, you must provide proper documentation, including safety data sheets and compliance with local regulations regarding hazardous materials.
- Can I export solid sodium hydroxide from the US?
- Yes, you can export solid sodium hydroxide, but you must comply with export regulations and ensure proper classification and documentation.
- How should I label shipments of caustic soda?
- Shipments of caustic soda should be labeled clearly with appropriate hazard symbols, handling instructions, and the HS code 281511.
- What are the safety measures for handling solid sodium hydroxide?
- When handling solid sodium hydroxide, use personal protective equipment such as gloves and goggles, and ensure proper ventilation in the work area.
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