HS Code 310551
6-digit classification for NP Fertilizer, with duty lookup and 1688 checks before payment
Official description: Mineral or chemical fertilisers containing two or three of the fertilising elements nitrogen, phosphorus and potassium; other fertilisers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg : Other mineral or chemical fertilisers containing the two fertilising elements nitrogen and phosphorus : Containing nitrates and phosphates
Also searched as: NP fertilizer, nitrogen-phosphate fertilizer, ammonium nitrate phosphate, nitrophosphate
Classification
How 310551 breaks down
Fertilisers
Mineral or chemical fertilisers containing two or three of the fertilising elements nitrogen, phosphorus and potassium; other fertilisers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg
Containing nitrates and phosphates
Short answer
What HS code 310551 means before paying a 1688 supplier
HS code 310551 is the 6-digit HS 2022 starting point for np fertilizer; often searched as NP fertilizer, nitrogen-phosphate fertilizer, ammonium nitrate phosphate. Before using it in a landed-cost estimate, confirm the product material, function, destination market, and the official tariff source. Treat any 1688 supplier code as a clue, not the final import classification.
Use
Start with this 6-digit HS code and compare the product's material, function, and use.
Verify
Check the destination market's official HTS, TARIC, commodity-code, duty, VAT, or GST source.
Decide
If classification, documents, or restricted-product risk is unclear, submit the product for a written check.
Covered products
What products fall under HS code 310551?
Buyers sourcing containing nitrates and phosphates from 1688 commonly describe it in these ways. If your product matches, 310551 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 310551
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 310551 by destination before you pay a 1688 supplier.
Heading 3105
Other HS codes under 3105
Subheadings in the same 4-digit heading — "Mineral or chemical fertilisers containing two or three of the fertilising elements nitrogen, phosphorus and potassium; other fertilisers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg". If 310551 is not an exact match, one of these may classify your product more precisely.
Questions
HS code 310551: common questions
What is HS code 310551?
HS code 310551 is the World Customs Organization 6-digit HS 2022 subheading for "Mineral or chemical fertilisers containing two or three of the fertilising elements nitrogen, phosphorus and potassium; other fertilisers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg : Other mineral or chemical fertilisers containing the two fertilising elements nitrogen and phosphorus : Containing nitrates and phosphates". The first two digits (31) are the chapter — Fertilisers — and digits 3-4 (3105) are the heading. Countries add further digits (8-10) for their national tariff line.
What products fall under HS 310551?
Common products classified under 310551 include NP fertilizer, nitrogen-phosphate fertilizer, ammonium nitrate phosphate, nitrophosphate and similar items matching containing nitrates and phosphates. The correct code still depends on the product's material, function and intended use.
How do I find the import duty for HS code 310551?
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 310551 the same in every country?
The first 6 digits (310551) 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 31
Explore Fertilisers
Sourcing containing nitrates and phosphates 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.