2818 Aluminium oxide (including artificial corundum); aluminium hydroxide

2818.10 Aluminium oxide; artificial corundum

• With an aluminium oxide content of 98,5 % by weight or more
• With less than 50 % of the total weight having a particle size of more than 10 mm
• 2818.10.11.10 Sol-gel corundum (cas rn 1302-74-5) with an aluminium oxide content of 99,6 % or more by weight, having a micro crystalline structure in the form of rods with an aspect ratio of 1,3 or more, but not more than 6,04%
• 2818.10.11.20 Sintered corundum with a micro crystalline structure, consisting of aluminium oxide (cas rn 1344-28-1) and magnesium aluminate (cas rn 12068-51-8), with a content by weight (calculated as oxides) of: -92 % or more of aluminium oxide, and -8 % or less of magnesium oxide4%
• 2818.10.11.30 Sintered sol-gel corundum or pre-sintered sol-gel with an aluminium oxide content of 99,6% or more by weight, having a microcrystalline structure in the form of rods with an aspect ratio of 1,3 or more, but not more than 6,04%
• 2818.10.11.40 Sintered sol-gel corundum or pre-sintered sol-gel with a microcrystalline structure, consisting of aluminium oxide, with a composition by weight (as oxides) of at least 98,5% aluminium oxide, other than with an aluminium oxide content of 99,6% or more by weight, having a microcrystalline structure in the form of rods with an aspect ratio of 1,3 or more, but not more than 6,04%
• Other
• 2818.10.11.91 Fused alumina where both of the following apply: (i) between 5% and 35% of the product by weight is below the lowest grain size limit set out in the specification for the product and; (ii) between 1% and 10% of the product by weight is above the upper grain size limit set out in the specification for the product4%
• 2818.10.11.99 Other4%
• 2818.10.19.00 With 50 % or more of the total weight having a particle size of more than 10 mm4%
• With an aluminium oxide content of less than 98,5 % by weight
• With less than 50 % of the total weight having a particle size of more than 10 mm
• 2818.10.91.20 Sintered corundum with a micro crystalline structure, consisting of aluminium oxide (cas rn 1344-28-1), magnesium aluminate (cas rn 12068-51-8) and the rare earth aluminates of yttrium, lanthanum, and neodymium, with a content by weight (calculated as oxides) of: - 92 % or more, but less than 98,5 % of aluminium oxide, - 2 % (± 1,5 %) of magnesium oxide, - 1 % (± 0,6 %) of yttrium oxide, and - either 3 % (± 2,2 %) of lanthanum oxide or - 2 % (± 1,2 %) of lanthanum oxide and neodymium oxide, with less than 50 % of the total weight having a particle size of more than 10 mm4%
• 2818.10.91.30 Sintered corundum with a micro crystalline structure, consisting of aluminium oxide (cas rn 1344-28-1) and magnesium aluminate (cas rn 12068-51-8), with a content by weight (calculated as oxides) of: -92 % or more, but not more than 94 % of aluminium oxide, and -8 % (± 1 %) of magnesium oxide4%
• 2818.10.91.40 Sintered sol-gel corundum or pre-sintered sol-gel with a microcrystalline structure, consisting of aluminium oxide, with a composition by weight (as oxides) of at least 92% but less than 98.5% aluminium oxide4%
• Other
• 2818.10.91.91 Fused alumina with a titanium dioxide content of 1% by weight or more, where both of the following apply: (i) between 5% and 35% of the product by weight is below the lowest grain size limit set out in the specification for the product and; (ii) between 1% and 10% of the product by weight is above the upper grain size limit set out in the specification for the product4%
• 2818.10.91.99 Other4%
• 2818.10.99.00 With 50 % or more of the total weight having a particle size of more than 10 mm4%

2818.20 Aluminium oxide; other than artificial corundum

• 2818.20.00.10 Activated alumina with a specific surface area of at least 350 m²/g4%
• 2818.20.00.90 Other4%

2818.30 Aluminium hydroxide

• 2818.30.00.20 Aluminium hydroxide (cas rn 21645-51-2) - in the form of powder - with a purity by weight of 99,5 % or more - with a decomposition point of 263o c or more - with a particle size of 4 µm (± 1 µm) - with a total-na2o-content by weight of not more than 0,06 %4%
• 2818.30.00.30 Aluminium hydroxide oxide (cas rn 1318-23-6) in the form of boehmite or pseudoboehmite4%
• 2818.30.00.90 Other4%