Kieserite, epsomite (natural magnesium sulphates)
Mineral substances not elsewhere specified or included. > Kieserite, epsomite (natural magnesium sulphates) > Kieserite, epsomite (natural magnesium sulphates)
Duty Rate (from China)
Products classified under Tariff item 2530.20.00
Agricultural Epsom Salt Nuggets
Agricultural epsom salt nuggets are large natural epsom salt forms intended for slow-release soil application. As unprocessed natural magnesium sulphate heptahydrate, they fall under tariff item 2530.20.00, which covers epsomite and natural magnesium sulphates, provided no chemical processing has occurred.
Bulk Natural Magnesium Sulfate Heptahydrate
Bulk natural magnesium sulfate heptahydrate is unrefined epsom salt from natural deposits, used for industrial magnesium extraction. As a natural mineral in crude form, it is classifiable under tariff item 2530.20.00, which includes epsomite and natural magnesium sulphates, and is not excluded by chapter notes.
Crude Kieserite Crystals
Crude kieserite crystals are naturally occurring magnesium sulfate monohydrate minerals extracted from evaporite deposits. They are minimally processed by washing to remove surface impurities, which does not alter their crystalline structure, and are therefore classified under tariff item 2530.20.00 as natural magnesium sulphates.
Evaporite Epsom Salt Coarse Grade
Evaporite epsom salt coarse grade consists of coarse crystalline epsom salt extracted from ancient evaporite basins. Before grinding or refining, it is a natural magnesium sulphate heptahydrate, classifiable under tariff item 2530.20.00, as the extraction and sizing are mechanical processes permitted by chapter note 1.
Kieserite-Epsom Salt Mineral Blend
Kieserite-epsom salt mineral blend is a natural mixture of kieserite monohydrate and epsom salt heptahydrate from evaporite deposits. As a natural combination of magnesium sulphates, it falls under tariff item 2530.20.00, which covers both kieserite and epsomite, provided no mixing with other substances has occurred.
Kieserite Evaporite Rock
Kieserite evaporite rock consists of kieserite-bearing material from ancient salt deposits, crushed to fist-sized pieces for transport. The crushing is a mechanical process permitted by chapter note 1, and the rock remains a natural magnesium sulphate, classifiable under tariff item 2530.20.00.
Kieserite Mineral Flakes
Kieserite mineral flakes are produced by crushing and screening raw ore, resulting in flaked natural magnesium sulphate without chemical alteration. This mechanical processing is within the scope of chapter note 1, so the flakes are classified under tariff item 2530.20.00 as natural magnesium sulphates.
Natural Epsom Salt Crystals
Natural epsom salt crystals are mined magnesium sulfate heptahydrate appearing as transparent to white crystals. As a naturally occurring mineral in crude form, they are classifiable under tariff item 2530.20.00, which covers epsomite and natural magnesium sulphates, and are distinct from synthetic forms.
Natural Kieserite Ore
Natural kieserite ore is raw material extracted from natural deposits, composed primarily of magnesium sulfate monohydrate. As an unprocessed natural mineral, it is directly classifiable under tariff item 2530.20.00, which covers kieserite and natural magnesium sulphates not elsewhere specified.
Pharmaceutical-Grade Natural Epsom Crystals
Pharmaceutical-grade natural epsom crystals are high-purity natural epsom salt selected for minimal impurities, intended for pharma laxative production. As the natural mineral form before chemical processing, they remain classifiable under tariff item 2530.20.00, provided they are not formulated into medicaments, which are excluded by chapter note 2(c).
Washed Kieserite Concentrate
Washed kieserite concentrate is produced by water washing raw ore to achieve over 95% purity, without drying or heating. Washing is explicitly permitted by chapter note 1 as a process that removes impurities without changing the product's structure, so it remains under tariff item 2530.20.00.