Harmonized System

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Section VI > Chapter 28 > Heading 2841

Explanatory notes

… 2841.69 ‑ ‑ Other 2841.70 ‑ Molybdates 2841.80 ‑ Tungstates (wolframates) 2841.90 ‑ Other This heading covers … from sodium dichromate and chalk; becomes anhydrous and turns yellow when heated. Used in the preparation of yellow … and pertungstates are derived from the normal tungstic acid (H 2 WO 4 ) and other tungstic acids.        …

Section VI > Chapter 28 > Heading 2825

Explanatory notes

… fumes in the air. A powerful reducing agent, used in the manufacture of a priming explosive or in chemical synthesis. … in powder. Colour ranges from yellow to reddish‑brown; it turns red when exposed to heat and is almost insoluble in … (heading 26.13). It is a white crystalline product which turns yellow on heating; practically insoluble in water. …

Section XVIII > Chapter 90 > Heading 9025

Explanatory notes

… value related to specific gravity (e.g., strength of spirituous liquors). The reading is sometimes converted by a … (1)   Glass thermometers, with a liquid‑filled glass tube . These include household thermometers (room, window … the angle through which one of the Nicol prisms must be turned to obtain a particular colouring. (9)   Pyrometers …

Section VI > Chapter 29 > Heading 2933

Explanatory notes

… unfused pyrazole ring (whether or not hydrogenated) in the structure : 2933.11 - - Phenazone (antipyrin) and its … piperazine ring in the structure : 2933.52 - - Malonylurea (barbituric acid) and its salts 2933.53 - - Allobarbital … or by synthesis. Its hydrazide is used in the treatment of tuberculosis.              Pyridine- b -carboxylic acid, …

Section VI > Chapter 29 > Heading 2941

Explanatory notes

… Penicillins and their derivatives with a penicillanic acid structure; salts thereof 2941.20 - Streptomycins and their … antivirals, antifungals, antiparasitic agents, etc.). Natural antibiotics of this heading are   substances …

Section VI > Chapter 32 > Heading 3206

Explanatory notes

… and compounds for coloured inks (with oxalic acid). Turnbull’s blue consists of a ferrous ferricyanide, not … compounds and contain no other substances, include calcium tungstate and magnesium tungstate. The same chemicals in a … radioscopy or radar apparatus, or fluorescent lighting tubes. The heading does not cover products answering to …

Section II > Chapter 13 > Heading 1302

Explanatory notes

… vegetable saps (vegetable products usually obtained by natural exudation or incision) and extracts (vegetable … (derris, cubé, timbo, barbasco, etc.). (6)   Extracts and tinctures of any plant of the genus Cannabis.          … consist of a mixture of extract of capsicum, spirits of turpentine, camphor and methyl salicylate, or of a mixture …

Section XVI > Chapter 84 > Heading 8402

Explanatory notes

… (e.g., mercury vapour) to operate prime movers (e.g., steam turbines) or other machines using steam power (e.g., steam … boilers), in which the body of the boiler is traversed by tubes through which the flue gases are conducted. (2)   … to industrial plant (motor vehicle body paint drying tunnels, for instance), or to large groups of buildings or …

Section VI > Chapter 28 > Heading 2833

Explanatory notes

… Blue crystals or crystalline powder, soluble in water. It turns into a white anhydrous sulphate when calcinated, which … 2 (SO 4 ) 3 .24H 2 O), in purple crystals dehydrating and turning white in the air; iron (III) potassium sulphate also …

Section XVI > Chapter 84 > Heading 8412

Explanatory notes

… engines and motors. 8412.10 - Reaction engines other than turbo-jets               - Hydraulic power engines and … covers non-electric engines and motors other than steam turbines and other vapour turbines, spark-ignition and …