Harmonized System

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Section VI > Chapter 32 > Heading 3214

Explanatory notes

… in general they harden or cure after application. However, some are in solid or powder forms which are made pasty at the time of … two components. One of these consists of an aqueous solution of sodium silicate and potassium-sodium silicate …

Section VI > Chapter 28 > Heading 2804

Explanatory notes

… It is used for hydrogenating oils (preparation of solid fats), for cracking petroleum products, in the … air. It is presented under pressure in steel cylinders, or sometimes as a liquid in double‑walled containers. … diodes, transistors and other semi-conductor devices and solar cells. Silicon is also used in metallurgical …

Section VI > Chapter 29 > Heading 2931

Explanatory notes

… undecane 3,9-dioxide. (f)  Sodium 3-(trihydroxysilyl) propyl methylphosphonate . (II)   … (sarin). (f)  O-Pinacolyl methylphosphonofluoridate (soman).       Trade in chemicals mentioned as examples in … These compounds include organic silanes and siloxanes; in some cases these products are polymerized to make silicones. …

Section XVIII > Chapter 90 > Heading 9021

Explanatory notes

… head and spine). (6)  Orthopaedic footwear and special insoles designed to correct orthopaedic conditions, provided … consist of a tubular metal frame on three or four wheels (some or all of which may swivel), handles and hand-brakes.  …

Section VI > Chapter 29 > Heading 2909

Explanatory notes

… If the radicals belong to the acyclic series, the ether is also acyclic; cyclic radicals give cyclic ethers. The first … odour of ether; the higher members are liquids or sometimes solids. (I) Symmetrical acyclic ethers . (1) … organic synthesis (e.g., synthetic perfumes) and also as a solvent and vermifuge (anthelmintic). (2) Phenetole (ethyl …

Section XVIII > Chapter 90 > Heading 9022

Explanatory notes

… designed : (1) Therapy apparatus , in which the radioactive source is a charge of radium, radio‑cobalt or some other radioactive isotope. (2)  Apparatus for … an electrically insulated metal container filled with oil. Sometimes the tube is gas filled, but more usually it is …

Section VI > Chapter 29 > Heading 2930

Explanatory notes

… 1 ) in which R is an organic radical and R 1  is a metal (sodium, potassium, etc.) or an organic radical. (1)   Sodium … or thiodiglycol (INN); a liquid used as a solvent for dyes in textile printing. (4)   Thioaniline or …

Section XVI > Chapter 84 > Heading 8428

Explanatory notes

… heading is not limited to lifting or handling equipment for solid materials but also includes such machinery for liquids … similar marine lifting and re‑floating appliances operating solely by hydrostatic buoyancy ( heading 89.05 or 89.07 ). …

Section VI > Chapter 30 > Heading 3006

Explanatory notes

… sterile. These ligatures are usually put up in antiseptic solutions or in sealed sterile containers.         The … and sterile laminaria tents (small lengths of algae, sometimes brown and with a rough grooved surface). They … Blinded (or double-blinded) clinical trial kits are for the sole purpose of blinded medical trials and contain either …

Section VII > Chapter 40 > Heading 4002

Explanatory notes

… the cross‑linking, such as pigments (other than those added solely for the purpose of identification), plasticisers, … extenders, fillers, reinforcing agents, organic solvents is not permitted. Thus, the presence of mineral oil … obtained by the reaction of aliphatic dihalides with a sodium polysulphide; they are generally vulcanisable with …