Engineering Chemistry: A Manual of Quantitative Chemical Analysis for the Use of Students, Chemists, and Engineers |
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alcohol alkali ammonia ammonium amount analysis apparatus asphaltic asphaltic cement beaker bitumen boiler boiling burned burner calcium carbon dioxide cent centimeters chemical chloride CO₂ coal coke color combustion containing cool copper crucible cubic foot cylinder determined dilute dissolved distilled water dryness ether evaporate excess fatty acids filter filtrate flask fuel furnace glass grams heat hot water hydrochloric acid hydrogen hydroxide ignite inches insoluble iodine iron lime liquid lubricating material metal method mineral oil minutes mixed mixture moisture naphtha nitric acid obtained oxide oxygen paper paraffine pass percentage petroleum Pintsch gas pipe pipette placed platinum potassium pounds precipitate pressure produced quantity residue resin sample sieve silica SiO2 soap soda sodium sodium carbonate soluble solution specific gravity standard steam sulphate sulphide sulphuric acid temperature thermometer tion titrate tube volatile wash weight wire zinc
Popular passages
Page 224 - Should the pat leave the plate, distortion may be detected best with a straight-edge applied to the surface which was in contact with the plate.
Page 206 - It shall leave by weight a residue of not more than 8 per cent. on the No. 100, and not more than 25 per cent. on the No. 200 sieve.
Page 212 - The thoroughly dried and coarsely screened sample is weighed and placed on the No. 200 sieve, which, with pan and cover attached, is held in one hand in a slightly inclined position, and moved forward and backward, at the same time striking the side gently with the palm of the other hand, at the rate of about 200 strokes per minute. The operation is continued until not more than one-tenth of 1 per cent.
Page 231 - Significance. — The object of this test is to determine the time which elapses from the moment water is added until the paste ceases to be fluid and plastic (called the "initial set"), and also the time required for it to acquire a certain degree of hardness (called the "final
Page 208 - Faulty character of cement results more frequently from imperfect preparation of the raw material or defective burning than from incorrect proportions of the constituents. Cement made from very finely-ground material, and thoroughly burned, may contain much more lime than the amount usually present and still be perfectly sound. On the other hand, cements low in lime may, on account of careless preparation of the raw material, be of dangerous character. Further, the ash of the fuel used in burning...
Page 214 - ... sliced off at the top of the ring by a single oblique stroke of a trowel held at a slight angle with the top of the ring. During these operations care must be taken not to compress the paste.
Page 207 - Fahr. as practicable, and observed at intervals for at least 28 days. (c) A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for 5 hours. 23. These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no s1gns of distortion, checking, cracking, or disintegrating.
Page 246 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than 3 per cent has been made subsequent to calcination.
Page 238 - The precipitate and filter are placed wet in a platinum crucible, and the paper burned off over a small flame of a Bunsen burner.
Page 239 - The precipitate shall be dissolved in a small quantity of hot hydrochloric acid, the solution diluted to about 100 cc, 1 cc of a saturated solution of sodium-ammonium-hydrogen phosphate added, and ammonia drop by drop, with constant stirring, until the precipitate is again formed as described and the ammonia is in moderate excess. The precipitate shall then be allowed to stand about two hours, filtered and washed as before.