Harmonized System

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Section VI > Chapter 28 > Heading 2812

Explanatory notes

… Sub-Chapter III HALOGEN OR SULPHUR COMPOUNDS OF NON‑METALS GENERAL This sub‑Chapter … crystals. Specific gravity about 3. Decomposed by water; it burns the skin badly. Used in organic synthesis as an …

Section VI > Chapter 28 > Heading 2841

Explanatory notes

… by treating bauxite with sodium hydroxide solution. Occurs as a white powder soluble in water, in aqueous … for hardening plaster; for manufacturing opaque glass; for purifying industrial water, etc. (b) Potassium aluminate . … by the fusion of bauxite and calcium oxide in an electric furnace; white powder, insoluble in water. Used in dyeing …

Section XVIII > Chapter 90 > Heading 9032

Explanatory notes

… apparatus for automatically controlling the flow, level, pressure or other variables of liquids or gases, or for … to, and maintain it at, a desired value, stabilised against disturbances, by constantly or periodically measuring its actual value; and (B) Automatic regulators of …

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… in the air, or in hydrated crystals (with 9 H 2 O), colourless or greenish, according to their degree of purity. Mild reducing agent used in the preparation of … this sulphide promotes the absorption of oil on the surface of ores by sulphiding. Also used as a hair‑remover …

Section VI > Chapter 28 > Heading 2825

Explanatory notes

… Also exists as the hydrate (NH 2 .NH 2 .H 2 O). Colourless, lachrymatory liquid which fumes in the air. A … this sulphate is used as a reagent in analysis, and in metallurgy (to separate polonium from tellurium). …

Section II > Chapter 13 > Heading 1302

Explanatory notes

… vegetable saps (vegetable products usually obtained by natural exudation or incision) and extracts (vegetable … family ( Glycyrrhiza glabra ) by hot water under pressure and then concentrated. It may be in liquid form or … by incision from certain species of shrubs known as rhus (urushi) growing in the Far East (e.g., Rhus vernicifera ). …

Section XVI > Chapter 85 > Heading 8504

Explanatory notes

… and using a preset or adjustable system, an alternating current into another alternating current of different … Certain transformers are designed for particular purposes, e.g., matching transformers for matching the … transformers) used to step down or step up voltages or currents to the level of the connected equipment, e.g., …

Section VI > Chapter 28 > Heading 2842

Explanatory notes

… most important are : (a)   Ammonium thiocyanate (NH 4 SCN). Colourless crystals, deliquescent, very soluble in water, turning red under the action of air and light, and … of sized silk fabrics); for preparing refrigerating mixtures, cyanides or hexacyanoferrates (II), thiourea, …

Section VI > Chapter 30 > Heading 3006

Explanatory notes

… in X-ray examination of internal organs, arteries, veins, urinary passages, bile duct, etc. They are based on barium … the patient (e.g., those for carrying out tests on blood, urine, etc., samples taken from a patient or for use as … for ostomy use , that is, colostomy, ileostomy and urostomy pouches cut to shape and their adhesive wafers or …

Section IV > Chapter 21 > Heading 2106

Explanatory notes

… specified or included . 2106.10 ‑ Protein concentrates and textured protein substances 2106.90 ‑ Other Provided that … The heading includes preparations consisting of mixtures of chemicals (organic acids, calcium salts, etc.) with foodstuffs (flour, sugar, milk powder, etc.), for incorporation in food …