High Purity Potassium Polyphosphate Crystals
High purity potassium polyphosphate crystals (>99%) are chemically defined potassium polyphosphates used in laboratory reagents and pharmaceutical intermediates. The crystal form ensures stability, and the product falls under tariff item 2835.39.00 as an 'other' polyphosphate.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
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The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide a detailed certificate of analysis to confirm purity above 99% and chemical identity
• Ensure proper packaging and labeling for laboratory chemicals, including hazard symbols if applicable
• Verify that the product is not intended for pharmaceutical use requiring separate Health Canada approval
Related Products under Tariff item 2835.39.00
Ammonium Polyphosphate
Ammonium polyphosphate is used as a flame retardant in plastics, textiles, and intumescent coatings. It is a polyphosphate of ammonium, falling under tariff item 2835.39.00 as an 'other' polyphosphate, distinct from potassium polyphosphates.
Calcium Polyphosphate
Calcium polyphosphate serves as a dietary supplement for bone health and in dental applications for remineralization. It is an 'other' polyphosphate under tariff item 2835.39.00, being a chemically defined calcium polyphosphate.
Food Grade Potassium Tripolyphosphate Powder
Food grade potassium tripolyphosphate powder is a chemically defined potassium polyphosphate used as a stabilizer and emulsifier in meat processing and dairy products. It falls under tariff item 2835.39.00 as an 'other' polyphosphate of potassium, meeting the chemical definition standards of Chapter 28.
Granular Potassium Tetrapolyphosphate
Granular potassium tetrapolyphosphate is a chemically defined potassium polyphosphate used in industrial water treatment for slow-release phosphate. Its granular form enhances handling in large-scale systems, and it qualifies as an 'other' polyphosphate under tariff item 2835.39.00.
Potassium Graham's Salt (Metaphosphate)
Potassium Graham's salt, a vitreous potassium metaphosphate, is used as a water softener in dishwashing detergents. Its long-chain phosphate structure qualifies it as an 'other' polyphosphate under tariff item 2835.39.00.
Potassium Hexametaphosphate
Potassium hexametaphosphate is a cyclic polyphosphate used as a sequestrant in water softening and corrosion inhibition. It qualifies as an 'other' polyphosphate of potassium under tariff item 2835.39.00, meeting Chapter 28 chemical definitions.