What HS code 2519.90 covers
HS code 2519.90 classifies magnesia, fused or dead-burned (sintered); whether or not containing small quantities of other oxides added before sintering, other magnesium oxide, whether or not pure, (not natural magnesium carbonate). It is a subheading of heading 2519 (Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; magnesium oxide, pure or not), in chapter 25 (Salt; sulphur; earths, stone; plastering materials, lime and cement), section V of the Harmonized System. These six digits are identical in every country that uses the HS.
Classification path
Import duty for 2519.90
仅为最惠国基础税率。中国原产货物还可能在此之上叠加301条款关税和2025年IEEPA关税。
来源：HTSUS / CBP
对第三国普遍适用的最惠国税率。各国17%至27%不等的进口增值税，以及任何反倾销措施，均需另行计算。
来源：TARIC
Imported this in 2024 or 2025?
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Related codes in heading 2519
Not quite the right fit? These subheadings sit under the same heading and are the most common alternatives to 2519.90.
Confirm the code for your exact product
A 6-digit subheading still covers a range of products. The wrong code at the border can mean overpaying duty, a delayed shipment, or a penalty. Describe your exact item and HS Mate confirms whether 2519.90 is right, with the duty rate and an audit trail your customs broker can accept.