… are compounds which contain the following characteristic groups : (–CONH 2 ) ((–CO) 2 NH) ((–CO) 3 N) Primary amide … amide Tertiary amide The hydrogen of the (–NH 2 ) or ( NH) groups may be substituted by alkyl or aryl radicals, in …
… and mineral substances are said to be activated when their superficial structure has been modified by appropriate … ion‑exchange or filtering. These products fall in two groups : (I) Products generally characterised by a very …
… grinding, pulping, etc., (e.g., for milling grain (upper or lower stones); pulping wood, asbestos, etc.; … manicure and pedicure purposes, and also for the cleaning up, polishing, etc., of metals, etc. Grinding stones, …
… used for structural purposes or in scaffoldings, arch supports, etc., and includes assembled shuttering for … of blocks, strips, friezes, etc., assembled on a support of one or more layers of wood, known as “multilayer” …
… instruments are also equipped with a device for totalling up working hours (e.g., per day or per week). These … contacts. These timers are used for checking electricity supply meters, for measuring the speed of human reactions, … parts are a synchronous motor, an electro‑magnetic coupling and a meter with a dial indicating seconds and …
… etc. Synthetic organic colouring matter put up in forms or packings for retail sale is classified in … canthaxanthin). Certain azo colouring matters are often put up in the form of mixtures of stabilised diazonium salts and couplers which produce an insoluble azo dye on the fibre …
… for different types of work). (A) AUXILIARY MACHINERY This group includes : (1) Auxiliary machines for use with textile … ). (14) Lingoes , thin metal weights with eyes at their upper ends to be attached to each cord of a loom harness. …
… (I) PHOTOGRAPHIC (OTHER THAN CINEMATOGRAPHIC) CAMERAS This group covers all kinds of photographic cameras ( other than … may be controlled by a microprocessor. The cameras of this group include : (1) Stereo cameras , equipped with two … cameras are mainly used for archeological research, the upkeep of monuments or at road accidents. (12) Comparison …
… 61.07 , 61.08 or 61.09) , composed of several pieces made up in identical fabric, put up for retail sale, and comprising : ‑ one garment designed to cover the upper part of the body, with the exception of pullovers …
… difficult to preserve in the solid state, it is usually put up in aqueous solutions (e.g., 65 %, 90 %). The concentrated solution, which remains supersaturated at room temperature, is sometimes known as “syrupy phosphoric acid”. Phosphoric acid is used to prepare …
