HS Code 280920
Phosphoric acid and polyphosphoric acids
Official description: Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined : Phosphoric acid and polyphosphoric acids
Also searched as: phosphoric acid, orthophosphoric acid, polyphosphoric acid
Classification
How 280920 breaks down
Inorganic chemicals; compounds of precious metals and isotopes
Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined
Phosphoric acid and polyphosphoric acids
Covered products
What products fall under HS code 280920?
Buyers sourcing phosphoric acid and polyphosphoric acids from 1688 commonly describe it in these ways. If your product matches, 280920 is likely the right 6-digit starting point — confirm material and intended use against the official tariff.
Import duty by market
Where to check the import duty for HS 280920
The 6-digit code is universal, but duty, VAT and GST are set by the destination country and depend on the full national tariff line with China as the country of origin. Start from the official source for your market.
United States
USITC / CBP · Harmonized Tariff Schedule (HTS)
European Union
TARIC · Access2Markets
United Kingdom
HMRC · UK Integrated Online Tariff
Canada
CBSA · Canadian Customs Tariff
Australia
ABF · Australian customs tariff
Singapore
Singapore Customs · Singapore Trade Classification (HS)
Compare the real China-origin import tax across markets
Use the HS & import duty checker to estimate duty + VAT/GST for 280920 by destination before you pay a 1688 supplier.
Heading 2809
Other HS codes under 2809
Subheadings in the same 4-digit heading — "Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined". If 280920 is not an exact match, one of these may classify your product more precisely.
Questions
HS code 280920: common questions
What is HS code 280920?
HS code 280920 is the World Customs Organization 6-digit HS 2022 subheading for "Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined : Phosphoric acid and polyphosphoric acids". The first two digits (28) are the chapter — Inorganic chemicals; compounds of precious metals and isotopes — and digits 3-4 (2809) are the heading. Countries add further digits (8-10) for their national tariff line.
What products fall under HS 280920?
Common products classified under 280920 include phosphoric acid, orthophosphoric acid, polyphosphoric acid and similar items matching phosphoric acid and polyphosphoric acids. The correct code still depends on the product's material, function and intended use.
How do I find the import duty for HS code 280920?
Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.
Is HS code 280920 the same in every country?
The first 6 digits (280920) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.
Can I trust the HS code a 1688 supplier gives me?
Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.
Chapter 28
Explore Inorganic chemicals; compounds of precious metals and isotopes
Sourcing phosphoric acid and polyphosphoric acids from 1688?
Get a written pre-payment check — classification clues, China-origin landed cost, and supplier risk — before you commit. 5,754 HS codes covered.