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HS code for caustic potash (potassium hydroxide)
In the UK Trade Tariff’s list of everyday names, “caustic potash (potassium hydroxide)” points to heading 2815: sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium. Check the description and the notes of the chapter before declaring: the right code depends on what the goods are made of and how they are used.
The UK Global Tariff divides 2815 into 4 tariff lines; the duty is 4%.
In the EU Combined Nomenclature, 2815 covers 4 tariff lines and the duty is 5.5%.
The Turkish Customs Tariff Schedule divides 2815 into 4 tariff lines; the duty is 5.5%.
Duty rates compared
UK 4% Third-country duty 4 tariff lines 
EU 5.5% Third-country duty 4 tariff lines 
Türkiye 5.5% Third-country duty 4 tariff lines 
USA Free – 3.7% General (MFN) 4 tariff lines · average 0.9% 
Canada Free Third-country duty 5 tariff lines 
Mexico Free – 5% Third-country duty 5 tariff lines · average 1% 
Brazil Free – 7.2% Third-country duty 4 tariff lines · average 5% 
Argentina Free – 7.2% Third-country duty 7 tariff lines · average 4.6% 
Peru Free – 6% Third-country duty 4 tariff lines · average 1.5% 
New Zealand Free Third-country duty 4 tariff lines 
Japan 3.9% – 5.3% Third-country duty 4 tariff lines · average 4.6% 
Taiwan 2.5% – 5% Third-country duty 5 tariff lines · average 4% 
GCC 5% Third-country duty 5 tariff lines 
Switzerland Free Third-country duty 4 tariff lines 
Norway Free Third-country duty 4 tariff lines 
North Macedonia Free – 5% Third-country duty 5 tariff lines · average 3% 
Nigeria 5% Third-country duty 4 tariff lines See also
Questions and answers
What is the HS code for caustic potash (potassium hydroxide)?
Caustic potash (potassium hydroxide) are classified under 2815 (Sodium hydroxide) in the Harmonized System. National tariffs add more digits; see the lines on this page.