HS 28.15.11

Sodium hydroxide (caustic soda); solid

WCO HS 20226-digit subheading
ℹ Many substances in this chapter (inorganic chemicals) may be classified as dangerous goods under ADR. Common hazard classes include Class 5.1 (oxidising), Class 6.1 (toxic), and Class 8 (corrosive). Always check individual substance classification before transport. Check ADR classification →
Classification is the shipper’s legal responsibility. This reference is based on common HS-ADR correlations from public regulatory data. Always verify against the current ADR, IMDG Code, or IATA DGR and consult a qualified DGSA where required.
HS 28.15.11WCO HS 2022
Sodium hydroxide (caustic soda); solid
Section
VI
Products of the chemical or allied industries
Chapter
28
Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes
Heading
28.15
Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium
Level
Subheading
International 6-digit level (WCO HS 2022)
World Customs Organization (HS 2022)checked 2026-07-24verified

This is the international 6-digit HS code. Your country may use additional digits for national tariff purposes. For UK tariff and duty rates, check the UK Trade Tariff. For US rates, check the USITC HTS.

Related Codes Under 28.15

28.15.12
Sodium hydroxide (caustic soda); in aqueous solution (soda lye or liquid soda)
→
28.15.20
Potassium hydroxide (caustic potash)
→
28.15.30
Peroxides of sodium or potassium
→
← Heading 28.15: Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium

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