Harmonized System

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Section VI > Chapter 28 > Heading 2811

Explanatory notes

… ‑ Other inorganic acids : 2811.11 ‑ ‑ Hydrogen fluoride (hydrofluoric acid) 2811.12 ‑ ‑ Hydrogen cyanide … to their non‑metal component (* ) : (A) COMPOUNDS OF FLUORINE (1) Hydrogen fluoride (HF). Obtained by the action of sulphuric acid on natural calcium fluoride (fluorite) or on cryolite. It is purified by treatment with …

Section VI > Chapter 29 > Heading 2937

Section VI > Chapter 29 > Heading 2935

Section VI > Chapter 28 > Heading 2844

Explanatory notes

… in nature in the monoisotopic state, e.g., beryllium 9, fluorine 19, aluminium 27, phosphorus 31, manganese 55, etc., … effects such as : (1)   Ionisation of gases. (2)   Fluorescence. (3)   Fogging of photographic plates. These … americium 241, etc.) with another element (beryllium, fluorine, etc.) in such a way as to produce a (γ,n) or (α,n) …

Section VI > Chapter 28 > Heading 2812

Section VII > Chapter 39 > Heading 3904

Explanatory notes

… 3904.50 ‑ Vinylidene chloride polymers               ‑ Fluoro‑polymers : 3904.61 ‑ ‑ Polytetrafluoroethylene … vinyl chloride copolymers, vinylidene chloride polymers, fluoropolymers and polymers of other halogenated olefins. …

Section XIII > Chapter 70 > Heading 7019

Explanatory notes

… purposes. There are two types of glass fibre: (a) (continuous) filament glass fibre consisting of a large number of continuous parallel filaments with diameters usually between 3 and 34 µm (microns ); after forming, those continuous filaments are held together in a strand (a …

Section VI > Chapter 29 > Heading 2923

Section VI > Chapter 31 > Heading 3103

Explanatory notes

… containing not less than 0.2 % by weight of fluorine calculated on the dry anhydrous product . Calcium … containing less than 0.2 % by weight of fluorine calculated on the dry anhydrous product is … above , but with no account being taken of the fluorine content limit as indicated in paragraph (A) (4) …

Section XVI > Chapter 84 > Heading 8428

Explanatory notes

… ‑ Pneumatic elevators and conveyors               ‑ Other continuous‑action elevators and conveyors, for goods or … and re‑floating appliances operating solely by hydrostatic buoyancy ( heading 89.05 or 89.07 ). The provisions of … to facilitate the discharge of hopper type wagons. (II) CONTINUOUS ACTION MACHINES (A)  Elevators used for raising a …