HS 28.35 — Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined

Chapter 28 Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes. · SECTION VI PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES · Edition 2026-04-01 (effective 1 April 2026)

Import duty rates for heading 28.35 from Japan's official tariff schedule. Which column applies? Most imports take the WTO rate (or General/Temporary where shown, if lower); GSP/LDC are preferential rates for developing countries; EPA rates (inside each row) apply when your goods qualify under that agreement's rules of origin. Rows without a percentage rate (specific, compound, seasonal or quota rates) need case-by-case review. Use the Calc button for the landed-cost estimate.

Code	Description	General	WTO	GSP	Unit	Law
28.35	Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
2835.10 000	Phosphinates (hypophosphites) and phosphonates (phosphites) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): 1.8% · China / (RCEP): 1.8% · Korea / (RCEP): 1.8%	4.6%	3.9%	Free	KG	PD / AN
	Phosphates :
2835.22 000	Of mono- or disodium EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.8% · Korea / (RCEP): Free	4.6%	3.9%	Free	KG	PD / AN
2835.24 000	Of potassium EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.8% · Korea / (RCEP): Free	4.6%	3.9%	Free	KG	PD / AN
2835.25 000	Calcium hydrogenorthophosphate (“dicalcium phosphate”) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): 1.8% · China / (RCEP): 1.8% · Korea / (RCEP): 1.8%	4.6%	3.9%	Free	KG	PD / AN
2835.26 000	Other phosphates of calcium EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): 1.8% · China / (RCEP): 1.8% · Korea / (RCEP): 1.8%	4.6%	3.9%	Free	KG	PD / AN
2835.29 000	Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.8% · Korea / (RCEP): Free	4.6%	3.9%	Free	KG	PD / AN
	Polyphosphates :
2835.31 000	Sodium triphosphate (sodium tripolyphosphate) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 2.1% · Korea / (RCEP): Free	5.6%	4.7%	Free	KG	PD / AN
2835.39 000	Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.8% · Korea / (RCEP): Free	4.6%	3.9%	Free	KG	PD / AN

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Source & disclaimer. Rates from Japan Customs, tariff schedule 2026-04-01 (Government Standard Terms of Use). Reference only — classification and the applicable rate are decided by customs at declaration; confirm with a licensed customs broker. Consumption tax (10%) applies on top of duty. See the import taxes guide and the customs FX rates.