… by the interaction of pulverised coal, sodium and gaseous ammonia. White powder, plates or paste, crystalline, … nickel‑plating” and as a catalyst in the synthesis of ammonia. (2) Tetrasodium hexacyanoferrate (Na 4 Fe(CN) 6 …
… sulphites or thiosulphates and of organic dyes, etc. (2) Ammonium sulphite ((NH 4 ) 2 SO 3 .H 2 O). Results from the action of sulphur dioxide on ammonia. Colourless crystals, soluble in water, oxidising in … hydrogen sulphite (mordant). (B) THIOSULPHATES (1) Ammonium thiosulphate ((NH 4 ) 2 S 2 O 3 ). Prepared from …
… of papers and paperboards in rolls or sheets having the common characteristic of having been worked during or after … with alternate flat surface layers. The most common use of corrugated paper and paperboard is in the … in quality and appearance and include those papers commonly known as goffered papers, papers with embossed …
… rolls 4810.14 - - In sheets with one side not exceeding 435 mm and the other side not exceeding 297 mm in the unfolded state 4810.19 - - Other - … The inorganic substances, other than kaolin (China clay), commonly used for coating include barium sulphate, magnesium …
… Tarpaulins are generally in the form of rectangular sheets, hemmed along the sides, and may be fitted with eyelets, … yarn of man‑made fibres) cut to particular shapes and hemmed, and usually fitted with eyelets or other fastening …
… (4 miles) per second. Detonating cords will initiate most commercial high explosives (dynamite, gelignite, sensitized … will not initiate less sensitive blasting agents like ANFO (ammonium nitrate fuel oil) on their own. They are most …
… from bars and rods not only by the general characteristics common to the semi‑finished products but also by the fact … produced from blocks or ingots by the action of power hammers or forging presses. They may take the form of crude … etc. The heading would, for example, cover an ingot roughly hammered into the shape of a flattened zig‑zag and requiring …
… pressure is passed. The two components are mounted in a common housing fitted with a grille. When the radiator unit … flanged or gilled tubes and an electric fan, mounted in a common housing provided with air outlets (grille or … by pneumatic actuators, the whole being mounted in a common housing and incorporating neither a radiator nor a …
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