BTKI Chapter 25: Salt; sulphur; earths and stone;plasteri...

Published: 2026-03-19 Reviewed: 2026-03-19 Authority: Official Indonesian source cross-check required

Field	Value
Chapter	25
Section	Mineral products
WCO headings loaded	30
6-digit subheadings loaded	67
Indonesian tariff lines live	0

Chapter summary

This chapter is now linked to the live WCO 2022 heading tree. Use it to move from the official chapter title into the 4-digit heading and then the 6-digit subheading before validating the final Indonesian tariff line.

Headings loaded from this chapter

Heading	Title	6-digit codes
2501	Salt (including table salt and denatured salt) and pure sodium chloride, whether or not in aqueous solution or containing added anti-caking or free-flowing agents; sea water	1
2502	Unroasted iron pyrites	1
2503	Sulphur of all kinds, other than sublimed sulphur, precipitated sulphur and colloidal sulphur	1
2504	Natural graphite	2
2505	Natural sands of all kinds, whether or not coloured, other than metalbearing sands of Chapter 26	2
2506	Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape	2
2507	Kaolin and other kaolinic clays, whether or not calcined	1
2508	Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths	6
2509	Chalk	1
2510	Natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk	2
2511	Natural barium sulphate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 28.16	2
2512	Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less	1
2513	Pumice stone; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated	2
2514	Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape	1
2515	Marble, travertine, ecaussine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape	3
2516	Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape	4
2517	Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling or for railway or other ballast, shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 25.15 or 25.16, whether or not heat-treated	5
2518	Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape	2
2519	Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure	2
2520	Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate) whether or not coloured, with or without small quantities of accelerators or retarders	2
2521	Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement	1
2522	Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 28.25	3
2523	Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers	5
2524	Asbestos	2
2525	Mica, including splittings; mica waste	3
2526	Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc	2
2527	[deleted]	0
2528	Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of H3BO3 calculated on the dry weight	1
2529	Feldspar; leucite, nepheline and nepheline syenite; fluorspar	4
2530	Mineral substances not elsewhere specified or included	3

Sources

Source	URL	Coverage	Tier
WCO HS 2022	https://www.wcotradetools.org/en/harmonized-system/search/2022/en	4-digit headings and 6-digit subheadings	official
DJBC BTKI	https://www.beacukai.go.id/btki-dan-tarif	Indonesia chapter mapping and BTKI context	official
INSW tariff lookup	https://insw.go.id/intr	Existing Indonesian tariff-line examples	official

Changelog

2026-03-19 - The HS page was published with tariff basics, chapter linkage, and import checkpoints.
2026-03-19 - Lartas notes, the duty calculator link, and chapter navigation were updated.

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