HS Code 69.01 – Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (e.g. kieselguhr, tripolite or diatomite) or of similar siliceous earths

HS code 6901 is a 4-digit heading in the Harmonized System that covers: Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (e.g. kieselguhr, tripolite or diatomite) or of similar siliceous earths. Heading 6901 encompasses ceramic bricks, blocks, tiles, and other goods specifically manufactured from siliceous fossil meals, such as kieselguhr (diatomite), tripolite, or similar siliceous earths. This classification is distinguished by the unique raw material, which imparts specific properties like high porosity, low density, and excellent insulating capabilities. These materials are often used where lightweight construction, thermal insulation, or filtration properties are paramount. The scope includes both finished construction materials and other ceramic articles, provided they are derived from these particular siliceous earths. This heading forms a critical niche within Chapter 69, 'Ceramic Products,' by specifically addressing items made from these naturally occurring, highly porous materials, setting them apart from general ceramic building materials or refractory products made from other raw materials. For importers and exporters, accurate classification under 6901 is crucial for determining the correct duty rates, understanding specific import regulations (e.g., related to dust or material composition), and ensuring compliance with trade agreements. Historically, these materials have been valued for their insulating and filtering properties, making them essential in various industrial applications, from furnaces to beverage clarification. Misclassification could lead to penalties or delays, as the material composition is the primary differentiator for this specific heading within the broader ceramic goods category.

Diatomite insulating bricks, kieselguhr filtration blocks, tripolite refractory tiles, lightweight ceramic blocks made from diatomite, soundproofing panels of siliceous earths, heat-insulating ceramic tiles, ceramic filter media, specific furnace insulation bricks, kiln lining blocks (diatomite-based), flue insulation segments, chimney bricks of kieselguhr, acoustic tiles from siliceous materials, lightweight partition blocks, decorative tiles with siliceous additives, ceramic aggregates (siliceous fossil meal based), porous ceramic supports, ceramic thermal insulation boards, lightweight firebricks (diatomite), ceramic pipe insulation, ceramic ventilation blocks.

Common misclassifications under 6901 often arise from overlooking the specific material requirement. Traders might incorrectly classify refractory bricks made from other materials (e.g., fireclay) under 6901, when they belong in 6902. Conversely, diatomite-based ceramic goods might be mistakenly classified as general ceramic building bricks (6904) or even as raw diatomite (2512) if the 'ceramic goods' aspect is not recognized. The key distinction is that 6901 specifically covers *ceramic goods* (fired) *of* siliceous fossil meals, differentiating them from unworked raw materials or ceramic products made from different compositions.

In 2025, the top exporters of HS code 6901 in UN Comtrade data were France ($18M, 18% of world exports), Spain ($14M) and Italy ($12M). World exports came to about $97M, 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.

In 2025, the top importers of HS code 6901 in UN Comtrade data were Saudi Arabia ($33M, 17% of world imports), the United Kingdom ($31M) and France ($7.3M). World imports came to about $197M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Ireland reports $309M of its chapter 69 imports without product detail (confidential), so it may also belong among the top importers.

HS code 6901 is a 4-digit heading under Chapter 69 of the Harmonized System. The first 2 digits (69) identify the chapter, and digits 3-4 (01) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.