HS code · 6-digit subheading
HS Code 2522.30 – Hydraulic lime; excluding calcium oxide and hydroxide of heading no. 2825
HS code 2522.30 is the 6-digit subheading for hydraulic lime, excluding calcium oxide and hydroxide of heading no. 2825. It is used for natural hydraulic lime (NHL 3.5), NHL 5, NHL 2, hydraulic lime mortar and restoration lime.
What HS 2522.30 covers
This HS code pertains to hydraulic lime, a unique type of lime that sets and hardens in the presence of water, similar to cement, due to its clay content. Unlike pure slaked lime, it offers hydraulic properties, making it particularly valuable in construction, especially for historical building restoration, sustainable construction, and specialized masonry applications where breathability and flexibility are desired. International trade in hydraulic lime is often driven by demand from conservation projects, eco-friendly building initiatives, and regions with specific architectural heritage. Exporters are typically countries with natural deposits of argillaceous limestone suitable for producing hydraulic lime, such as France and the UK. Importers include nations with active restoration sectors or a growing market for natural building materials. Its trade volume is smaller than that of quicklime or slaked lime but represents a niche, high-value market.
- Covers
- Natural hydraulic lime (NHL 3.5)
- NHL 5
- NHL 2
- Hydraulic lime mortar
- Restoration lime
- Eco-friendly building lime
- Masonry hydraulic lime
- Examples
- Saint-Astier Natural Hydraulic Lime
- Prompt Natural Cement
- Singleton Birch Hydraulic Lime
- Otterbein Hydraulic Lime
Codes often confused with 2522.30
Common mistake. This code is distinct from 252210 (quicklime) and 252220 (slaked lime) because of its hydraulic setting properties, which are absent in pure quicklime or slaked lime. It also differs from cement (2523) due to its specific composition and properties.
Top exporters and importers of HS code 252230, 2025
In 2025, the largest exporter of HS code 252230 in UN Comtrade data was France, with 32% of world exports; the largest importer in UN Comtrade data was the Netherlands, with 40% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 France $12M 32% of world exports
- 2 Dominican Republic $4.6M 12% of world exports
- 3 South Africa $2.8M 7.6% of world exports
World total: $38M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Netherlands $31M 40% of world imports
- 2 United Kingdom $8.8M 11% of world imports
- 3 Germany $3.5M 4.5% of world imports
World total: $78M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 2522.30
Brazil does not split HS 2522.30: its NCM code is 2522.30.00.
All Brazil NCM codes in heading 25.22 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2522.30
What is HS code 252230?
HS code 252230 is a 6-digit subheading in the Harmonized System that covers: Hydraulic lime; excluding calcium oxide and hydroxide of heading no. 2825. This HS code pertains to hydraulic lime, a unique type of lime that sets and hardens in the presence of water, similar to cement, due to its clay content. Unlike pure slaked lime, it offers hydraulic properties, making it particularly valuable in construction, especially for historical building restoration, sustainable construction, and specialized masonry applications where breathability and flexibility are desired. International trade in hydraulic lime is often driven by demand from conservation projects, eco-friendly building initiatives, and regions with specific architectural heritage. Exporters are typically countries with natural deposits of argillaceous limestone suitable for producing hydraulic lime, such as France and the UK. Importers include nations with active restoration sectors or a growing market for natural building materials. Its trade volume is smaller than that of quicklime or slaked lime but represents a niche, high-value market.
What products fall under HS code 252230?
Natural hydraulic lime (NHL 3.5), NHL 5, NHL 2, hydraulic lime mortar, restoration lime, eco-friendly building lime, masonry hydraulic lime
What are common misclassifications for HS code 252230?
This code is distinct from 252210 (quicklime) and 252220 (slaked lime) because of its hydraulic setting properties, which are absent in pure quicklime or slaked lime. It also differs from cement (2523) due to its specific composition and properties.
Which countries are the top exporters of goods under HS code 252230?
In 2025, the top exporters of HS code 252230 in UN Comtrade data were France ($12M, 32% of world exports), the Dominican Republic ($4.6M) and South Africa ($2.8M). World exports came to about $38M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 252230?
In 2025, the top importers of HS code 252230 in UN Comtrade data were the Netherlands ($31M, 40% of world imports), the United Kingdom ($8.8M) and Germany ($3.5M). World imports came to about $78M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 252230 structured?
HS code 252230 is a 6-digit subheading under the Harmonized System. The first 2 digits (25) identify the chapter, digits 3-4 (22) identify the heading, and digits 5-6 (30) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 252230?
In Brazil, HS code 252230 is NCM 2522.30.00. The last two digits are 00 because Brazil does not split this HS code further.