HS 29.23 — Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined.

Chapter 29 Organic chemicals. · SECTION VI PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES · Edition 2026-04-01 (effective 1 April 2026)

Import duty rates for heading 29.23 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
29.23	Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined.
2923.10 000	Choline and its salts 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): Free · Korea / (RCEP): Free	4.6%	3.9%	Free	KG	PD
2923.20 000	Lecithins and other phosphoaminolipids 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): Free · Korea / (RCEP): Free	6.4%	6%	Free	KG	PD
2923.30 000	Tetraethylammonium perfluorooctane sulphonate 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): 1.8%	4.6%	3.9%	Free	KG	PD
2923.40 000	Didecyldimethylammonium perfluorooctane sulphonate 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): 1.8%	4.6%	3.9%	Free	KG	PD
2923.90	Other
2923.90 100	1 1-Adamantyl trimethylammonium hydroxide (ADAH) and tetraethylammonium hydroxide (TEAH) 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): (1.8%)	Free	(3.9%)		KG	PD
2923.90 200	2 Cyclohexyl (ethyl) (dimethyl) ammonium bromide and cyclohexyl (ethyl) (dimethyl) ammonium hydroxide 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): (1.8%)	Free	(3.9%)		KG	CR
2923.90 900	3 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): 1.8%	4.6%	3.9%	Free	KG	PD

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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.