Journal of the Society of Chemical Industry, Volume 181899 |
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acetic acid acetone acetylene acetylene gas alcohol alkali aluminium ammonia amount Anilin apparatus boiling bromine burner calcium calcium carbide carbide carbon caustic soda cellulose cement cent chamber Chem chemical chloride chromic acid coal coke combustion COMPLETE SPECIFICATIONS ACCEPTED compounds condensed containing cooling copper crystallised diazotised dilute dissolved distillation drying dyeing dyestuffs electrolytic ether evaporated extract fabrics fermentation fibre filtered fuel furnace gases Germany grms heat hydrochloric acid hydrogen Improvements Impts industry iron Journal July July 12 June kilos lime liquid liquor litre London manufacture material melting metal method mixed mixture nitrate nitric nitric acid nitrogen obtained oxide passes PATENTS phenol pipe plates potassium powder precipitate present pressure production quantity salt Sept soap sodium sodium carbonate soluble solution steam substance sugar sulphate sulphide sulphuric acid tank temperature tion tons tube vapour vessel washed whilst yeast Zeits zinc
Popular passages
Page 937 - Committee appointed in 1887 to confer with the Committee of the American Association for the Advancement of Science, with a view to forming a uniform system of recording the results of water analysis*.
Page 641 - Report of the Committee Appointed by the Treasury to Consider the Desirability of Establishing a National Physical Laboratory, C. 8976 (London, HMSO, 1898). P'3...
Page 722 - Board have recently appointed a special committee ' to inquire into the use of preservatives and colouring matters in food, and to report (1) whether the use of such materials, or any of them, for the preservation...
Page 866 - N/1 sodium hydroxide are placed in a stoppered flask of about 200 cc capacity. To this is added 0.5 cc of the naphtha. The mixture is well shaken and allowed to stand 5 to 10 minutes. Into it from a burette N/5 iodine solution is run slowly, drop by drop, vigorously shaking all the time, till the upper portion of the solution, on standing a minute, becomes quite clear. A few cc more of N/5 iodine solution are added, as to get concordant results an excess of at least 25% of the iodine required must...
Page 789 - The committee examined more than thirty witnesses, and then reported unanimously " that a public institution should be founded for standardising and verifying instruments for testing materials and for the determination of physical constants.
Page 954 - ... inasmuch as quebracho wood is not raised in Russia, is a necessity, and is only used as a mixture with willow bark and other tanning material employed in the leather industry, to admit quebracho wood in logs and beams free of duty from and after February 15, 1899.
Page 694 - ... soluble in strong alcohol. By the action of acetic anhydride, it yields a crystalline mono-acetate, mp 200°, and it therefore appears to be an alcohol. It is unaffected by potash and by all ordinary reagents. A tetranitro-derivative is produced by the action of fuming nitric acid. Chromic acid in acetic acid solution, while oxidising it, appears to cause two molecules to combine ; the product is a feeble acid, the molecular weight of which was determined by the cryoscopic method. The substance...
Page 954 - ... on the free list. The principal material for tanning in Russia is willow bark, which is collected in the early spring by the peasants before field labor begins; consequently, when the question of duty on tanning material is considered, the interests of the peasants are involved. The willow bark contains but 4 per cent of tannin, while the quebracho tree yields 20 to 24 per cent, and is necessary for the preparation of leather of a high grade. Previous to 1882 tanning material was admitted free,...
Page 937 - ... well as the time at which its analysis is begun, should be noted. An effluent should be drawn to correspond as nearly as possible with the original sewage, and both it and the sewage should be taken in quantities proportional to the rate of flow when that varies (eg, in the emptying of a filter-bed).
Page 937 - The committee suggest that in the case of all nitrogen compounds the results be expressed as parts of nitrogen over 100,000, including the ammonia expelled on boiling with alkaline permanganate, which should be termed albuminoid nitrogen. The nitrogen will therefore be returned as : !1) Ammoniacal nitrogen from free and saline ammonia. 2) Nitrous nitrogen from nitrites. (3) Nitric nitrogen from nitrates. (4) Organic nitrogen (either by Kjeldahl or by combustion, but the process used should be stated)....