… homologues; in the case of toluene, a phenol homologue known as cresol is obtained, in the case of xylene, xylenol … a characteristic odour of phenol, deliquescent, turning brown with age; m -cresol is a colourless or yellowish oily … ) . These are phenol derivatives of xylene. Six isomers are known; they are obtained from coal tar oils. To fall …
… permanganate on a manganous salt (e.g., the sulphate). Brown or blackish masses or powder (specific gravity about … printers’ ink (manganese black), colours (brown pigments known as mineral bistre, manganese bitumen ), certain …
… as defined in Note 2 to Section XV, e.g., screws (bridge, crown, dial, ratchet, click, end‑stone cap or index disc, … shock‑proof devices. (7) Winding and setting mechanism : crown, winding stem and pinion, clutch wheel, setting …
… U, I or H sections, not further worked than hot‑rolled, hot‑drawn or extruded, of a height of less than 80 mm … - L or T sections, not further worked than hot‑rolled, hot‑drawn or extruded, of a height of less than 80 mm : 7216.21 … - L or T sections, not further worked than hot‑rolled, hot‑drawnor extruded, of a height of 80 mm or more 7216.50 - …
… is unctuous to the touch. It is white, yellowish or dark brown in colour. It is obtained from the residues of the … from soft and plastic to hard and brittle and from dark brown to white in colour. Ozokerite is a natural mineral wax. When purified it is known as ceresine . Lignite (or Montan ) wax and the …
… of carbon monoxide, hydrogen and nitrogen (producer gas) is drawn off at the top of the apparatus. In certain generators of the “reversed combustion” type, the air is blown from the top to the bottom and along the sides of the …
… removes part of its colouring matter. (C) Shellac , also known as sheet, plate, or slab ‑ lac, obtained by fusion and … or reddish. A similar product in the shape of discs is known as “button lac”. Shellac is used largely in … hardens, forming a resistant film when exposed to air (known as “Japan lacquer”, “Chinese lacquer”, etc.), is …
… of the drying oils. Linseed oil varies from yellow to brownish in colour and has an acrid taste and smell. On … industrial purposes. (5) Microbial fats and oils , also known as single cell oils (SCOs), are obtained by extracting … oil, e.g., in cosmetic preparations. (8) The products known as vegetable tallows (chiefly Borneo tallow and …
