What are phosphinates and how are they used?

Phosphinates are chemical compounds used in various applications, including flame retardants and agricultural products.

How do I know if my product is a mono- or disodium phosphate?

Check the chemical composition; if it contains one or two sodium ions and phosphoric acid, it qualifies as mono- or disodium phosphate.

What is the significance of chemical definitions in HS classification?

Chemical definitions help ensure that products are classified correctly, which affects duty rates and compliance with regulations.

Can I use the same HS code for different types of phosphates?

No, each type of phosphate has a specific HS code based on its chemical structure, so it's important to choose the correct one.

What should I do if I'm unsure about the correct HS code?

Consult with a customs broker or refer to official tariff classification guidelines to ensure accurate classification.

HS-4 · Heading

2835 — Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined

Chapter 28: Inorganic chemicals

Plain-language overview

Use HS-4 2835 when importing phosphinates, phosphonates, or phosphates, such as sodium triphosphate used in food processing. Understanding the specific subheading is crucial for accurate classification and compliance.

When deciding between HS-6 283510 for phosphinates and HS-6 283522 for mono- or disodium phosphates, consider the chemical composition of your product. If your product contains phosphinates, choose 283510; if it’s a mono- or disodium phosphate, then 283522 is appropriate.

If your product is a potassium phosphate, you would use HS-6 283524. However, if it’s a calcium phosphate, you need to determine if it falls under HS-6 283525 for dicalcium phosphate or HS-6 283526 for other calcium phosphates. The specific chemical structure will guide your choice.

For polyphosphates, select HS-6 283531 if your product is sodium triphosphate. If it’s a different type of polyphosphate, such as ammonium polyphosphate, use HS-6 283539. Ensure you verify the chemical definitions to avoid misclassification.

Keywords & topics

Short phrases that describe this HS-4 heading when you're searching or filtering schedules.

phosphinates · phosphonates · phosphates · polyphosphates · sodium triphosphate · calcium phosphate · mono- or disodium phosphates · potassium phosphates · chemical definitions · import classification

Examples

Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.

Sodium triphosphate (used in food processing)
Calcium hydrogenorthophosphate (dicalcium phosphate, used in dietary supplements)
Mono- or disodium phosphates (used in baking powder)
Potassium phosphates (used in fertilizers)
Phosphinates for flame retardants
Polyphosphates for detergents
Phosphonates in water treatment

Common questions

How people often phrase their search when they're trying to classify goods like yours.

What is the difference between phosphinates and phosphonates?
How to classify phosphates for import?
What are the uses of sodium triphosphate?
Which HS code for calcium hydrogenorthophosphate?
Are polyphosphates regulated differently?
How to determine the correct HS-6 subheading?

Questions & answers

For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.

What are phosphinates and how are they used?: Phosphinates are chemical compounds used in various applications, including flame retardants and agricultural products.
How do I know if my product is a mono- or disodium phosphate?: Check the chemical composition; if it contains one or two sodium ions and phosphoric acid, it qualifies as mono- or disodium phosphate.
What is the significance of chemical definitions in HS classification?: Chemical definitions help ensure that products are classified correctly, which affects duty rates and compliance with regulations.
Can I use the same HS code for different types of phosphates?: No, each type of phosphate has a specific HS code based on its chemical structure, so it's important to choose the correct one.
What should I do if I'm unsure about the correct HS code?: Consult with a customs broker or refer to official tariff classification guidelines to ensure accurate classification.

Continue classification

Parent context

HS code directory Chapter 28

Nearby siblings

Previous HS-4 2834 Next HS-4 2836

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HS-6 subheadings (8)

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