Harmonized System

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Section VI > Chapter 28 > Heading 2827

Explanatory notes

… extraction of potassium salts. Occurs either in anhydrous translucent masses, cylinders, tablets or prisms, or … chromium. (13) Manganese dichloride (MnCl 2 ). Obtained by treating the natural carbonate, rhodocrosite or dialogite … in heading 25.30 . (15) Antimony chlorides . (a)  Antimony trichloride (butter of antimony) (SbCl 3 ). Prepared by …

Section VI > Chapter 28 > Heading 2842

Explanatory notes

… H 2 O, according to the temperature of crystallisation) and trisodium orthoarsenate (anhydrous or with 12 H 2 O). … for printing textiles, etc. (8)     Calcium arsenates . Tricalcium diorthoarsenate (Ca 3 (AsO 4 ) 2 ), often … for preparing anti‑fouling paints. (10)   Lead arsenates . Trilead diorthoarsenate (Pb 3 (AsO 4 ) 2 ), and the acid …

Section VI > Chapter 38 > Heading 3801

Explanatory notes

… to special shapes, lathe‑worked, drilled, milled, etc., or transformed into articles. If of a kind used for … at a temperature (1000 to 1200 °C) insufficient to produce true “graphitisation”, of mixtures of finely ground coke or … with mineral oils, and equally suitable for use for treating the surfaces of heavy machinery or for the …

Section VI > Chapter 38 > Heading 3802

Explanatory notes

… superficial structure has been modified by appropriate treatment (with heat, chemicals, etc.) in order to make them … (a)   Activated carbon .  This is usually obtained by treating vegetable, mineral or other carbon (wood charcoal, … microscopic examination it is seen to consist of very thin, transparent flakes having curved surfaces.         The two …

Section XV > Chapter 75 > Heading 7508

Explanatory notes

… grill and netting, of nickel wire 7508.90 - Other (A) ELECTROPLATING ANODES INCLUDING THOSE PRODUCED BY ELECTROLYSIS This group covers refined nickel anodes for … (a)   Plates (cathodes) obtained simply by electrolysis, untrimmed or trimmed, or cut into strips or small rectangular …

Section VII > Chapter 39 > Heading 3912

Explanatory notes

… falls in this heading. Regenerated cellulose is a glossy, transparent material usually obtained by precipitation and … Chapter 54 or 55 . Vulcanised fibre, which is produced by treating paper or sheets of cellulose pulp with zinc … are used in explosives; for safety reasons they must be transported damped with alcohol, generally ethyl, isopropyl …

Section XVI > Chapter 84 > Heading 8460

Explanatory notes

… - Flat‑surface grinding machines : 8460.12 ‑ ‑ Numerically controlled 8460.19 ‑ ‑ Other               ‑ Other grinding … Deburring machines with metal brushes or abrasives , for trimming rough castings or the rough edges of cut metal. … construction machines (single station) and multi‑station transfer machines, for working metal ( heading 84.57 ). (e)  …

Section II > Chapter 14 > Heading 1404

Explanatory notes

… produced on the leaves or twigs of various oak and other trees when punctured by certain insects such as those of the … the unicellular hairs of the seeds of certain varieties of tropical plants (e.g., Asclepias ). (3) The products known …

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… sulphate or other impurities. Used either alone, or treated with arsenous oxide or with lime for de‑hairing … plaster, etc. (9)   Antimony sulphides . (a)  Artificial trisulphide (Sb 2 S 3 ). The action of an acid on the … powder for photography (with potassium chromate), etc. Hot treatment with sodium carbonate gives “kermes mineral”, …

Section VI > Chapter 28 > Heading 2849

Explanatory notes

… known binary carbides are : (1) Calcium carbide (CaC 2 ). A transparent, colourless solid in the pure state, opaque and … (2) Silicon carbide (SiC) (carbon silicide). Obtained by treating carbon and silica in an electric furnace. Black crystals, lumps or shapeless masses, …