Harmonized System

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Section VI > Chapter 38 > Heading 3824 > 3824.9 > 3824.99

Classification opinions

… oxides. The product is mainly used in prosthetic dental treatment. After import, the product will be processed …

Section VI > Chapter 28 > Heading 2836

Explanatory notes

… in powder, soluble in hot water. It deteriorates in a humid atmosphere with superficial formation of the acid carbonate, … especially when hot, and liable to deteriorate in a humid atmosphere. Used in medicine (for treating gravel); for … White crystals, very hygroscopic, turning blue in a humid atmosphere and soluble in water. Strong oxidising agents …

Section V > Chapter 25

Section X > Chapter 47 > Heading 4701

Explanatory notes

… wood chips after they have received preliminary heat treatment to soften them and allow an easier separation of … produced from roundwood or blocks in stone grinders at atmospheric pressure. Pressurised stone groundwood (PGW) … from wood chips or wafers in refiners discharging at atmospheric pressure. Thermo‑mechanical pulp (TMP) produced …

Section XV > Chapter 72 > Heading 7215

Explanatory notes

… working (such as drilling or sizing, or to further surface treatments than are allowed for products of heading 72.14, … may have been subjected to the following working or surface treatments : (1)   Straightening. (2)   Surface treatments described in Item (2) of the second paragraph of …

Section II > Chapter 7 > Heading 0713

Explanatory notes

… for sowing (whether or not rendered inedible by chemical treatment) or for other purposes. They may have undergone moderate heat treatment designed mainly to ensure better preservation by … and eliminating part of the moisture; however, such treatment should not affect the internal character of the …

Section VI > Chapter 28 > Heading 2812

Explanatory notes

… with an irritating odour, lachrymatory. Fumes in a humid atmosphere and decomposes on contact with water. Mainly used … about 3.6. Like the trichloride, it fumes in a humid atmosphere; decomposes on contact with water and is … white fumes (hydrogen chloride (HCl)) in the presence of atmospheric moisture. Decomposes in water with formation of …

Section XVI > Chapter 84 > Heading 8417

Explanatory notes

… Furnaces and ovens for the roasting, melting or other heat-treatment of ores, pyrites or of metals 8417.20 - Bakery … separate combustion chambers). They are used for the heat treatment (e.g., by roasting, fusion, calcination or … Ovens and furnaces for hardening, annealing or similar heat-treatment of metals. (4)   Cementation ovens. (5)   Bakery …

Section VII > Chapter 39 > Heading 3913

Explanatory notes

… the extract to obtain an impure calcium alginate which on treatment with a mineral acid is transformed into alginic … Natural rubber, which is a high polymer, forms, on chemical treatment, certain substances having the characteristic of … varnishes which after application form a film resistant to atmospheric and chemical deterioration. (b) Rubber …

Section XIII > Chapter 68 > Heading 6806

Explanatory notes

… is obtained from vermiculite (heading 25.30) by heat treatment which causes a very large expansion of the … chlorites, obsidian, etc., similarly obtained by heat treatment. These generally consist of very lightweight spheroidal grains. Perlite activated by heat treatment is in the form of shiny white microlamellar powder …

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