What is HS code 390721 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-6 · Subheading
390721
Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate
Heading 3907 — Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms
Chapter 39: Plastics and articles thereof
Plain-language overview
Use HS-6 390721 when importing or exporting bis(polyoxyethylene) methylphosphonate in primary forms. This chemical is often used in specialized applications like flame retardants or surfactants. For example, a shipment of this compound in bulk containers would fall under this code.
This HS-6 code specifically covers polyethers that are not polyacetals, distinguishing it from HS-6 390720, which includes polyacetals. If you're dealing with a product that contains polyacetals, you'll need to classify it differently.
When considering HS-6 390721, it's important to note that it applies to primary forms of polyethers, meaning these are not yet processed into final products. This could include liquid or solid forms used in manufacturing.
If you're unsure whether your product fits this category, compare it with HS-6 390722, which covers other types of polyethers in primary forms. Understanding these distinctions can help avoid misclassification and potential customs issues.
Keywords & topics
Useful terms traders and brokers use for this HS-6 subheading.
bis(polyoxyethylene) methylphosphonate · polyethers in primary forms · flame retardant chemicals · surfactants for industry · chemical manufacturing materials · polyether resins · solid polyethers · liquid polyethers · raw chemical shipments · intermediate chemicals · adhesive production · agricultural surfactants · pharmaceutical ingredients · cosmetic formulation chemicals
Examples
Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.
- Bulk shipment of bis(polyoxyethylene) methylphosphonate for industrial use
- Containers of polyether resins for use in chemical manufacturing
- Raw materials for producing flame retardant coatings
- Surfactants in liquid form for agricultural applications
- Solid polyether used in the production of adhesives
- Intermediate chemicals for pharmaceuticals
- Polyethers supplied in drums for cosmetic formulations
- Chemical components for electronic manufacturing
Common questions
Frequent classification questions with short practical guidance.
How to classify bis(polyoxyethylene) methylphosphonate?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
Is bis(polyoxyethylene) methylphosphonate a polyether?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are primary forms of polyethers?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Differences between HS-6 390721 and 390720?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Can I use HS-6 390721 for liquid polyethers?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What products fall under HS code 390721?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to avoid customs issues with polyether classification?
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 classify bis(polyoxyethylene) methylphosphonate for import?
Check the exact product specs and destination-country tariff notes before finalizing the code.
Examples of products under HS-6 390721
Use this topic to narrow your shortlist, then validate the final code against legal wording.
What are the primary forms of polyethers in trade?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Differences between polyacetals and polyethers in HS codes
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
Understanding HS-6 390721 for chemical shipments
Use this topic to narrow your shortlist, then validate the final code against legal wording.
What to include in invoices for HS-6 390721 products?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
How to determine if a product is a primary form polyether?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Guidelines for shipping bis(polyoxyethylene) methylphosphonate
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What is bis(polyoxyethylene) methylphosphonate used for?
- It's commonly used as a flame retardant and surfactant in various industrial applications.
- How do I know if my product qualifies for HS-6 390721?
- If your product is a primary form of polyether and does not contain polyacetals, it likely qualifies.
- Can I ship liquid forms under HS-6 390721?
- Yes, liquid forms of bis(polyoxyethylene) methylphosphonate are classified under this HS code.
- What are the risks of misclassifying my product?
- Misclassification can lead to customs delays, fines, or additional tariffs, so it’s crucial to classify accurately.
- What is the difference between HS-6 390721 and HS-6 390720?
- HS-6 390721 covers polyethers other than polyacetals, while HS-6 390720 specifically includes polyacetals.
- How should I document shipments of HS-6 390721?
- Ensure your invoices clearly state the product as bis(polyoxyethylene) methylphosphonate and include its primary form.
- Are there any specific packaging requirements for HS-6 390721?
- While there are no specific packaging requirements, ensure that containers are appropriate for chemical transport.
- What should I do if I'm unsure about the classification?
- Consult a customs broker or refer to official customs rulings for guidance on classification.
Continue classification
Parent context
Nearby siblings
Next best action
Pick one of these actions to move from reading to a defensible classification decision.