| 单词 | barium sulphate |
| 例句 | In the same way, black fixe and barytes, or barium sulphate, also appeared to be useful in strengthening a paint. Paint Technology and Tests 2011-09-15T02:00:12.263Z To the filtrate ammonia is added, and then barium chloride, which precipitates the sulphur as barium sulphate. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Baryta forms white crystalline salts with acids, which are all poisonous with the exception of barium sulphate. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis Under the influence of an electromotive force the barium ions moved up the tube, disclosing their presence by the trace of insoluble barium sulphate formed. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" For this purpose it is employed both in the ground form and in the manufacture of lithopone, a widely used white paint consisting of barium sulphate and zinc sulphide. The Economic Aspect of Geology Lithopone, probably the whitest of pigments, results from the double decomposition of zinc sulphate and barium sulphide, thereby forming a molecular combination of zinc sulphide and barium sulphate. Paint Technology and Tests 2011-09-15T02:00:12.263Z The plain transfer paper is prepared in the same manner, leaving out the barium sulphate and the coloring matters. Photographic Reproduction Processes Artificially-prepared barium sulphate is used as a pigment, Permanent White, also in the paper industry and in vulcanizing rubber. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis Should a house painted with a mixture of linseed oil, lead oxid, and barium sulphate go to buildings or coating compositions? The Classification of Patents Sulphates are estimated by precipitation as barium sulphate and calculated to Na2SO4. The Handbook of Soap Manufacture Blanc fixe is the precipitated form of barium sulphate, resulting from the action of soluble barium salts on soluble sulphates. Paint Technology and Tests 2011-09-15T02:00:12.263Z Thus barium sulphate, one of the most insoluble of common substances, dissolves in water to the extent of 1 part in 400,000. An Elementary Study of Chemistry In determining it, it is first converted into sulphuric acid, and then precipitated and weighed as barium sulphate. A Text-book of Assaying: For the Use of Those Connected with Mines. Lithopone, a white pigment consisting of zinc sulphide and barium sulphate, sometimes exhibits the peculiar property of darkening on exposure to sunlight. Artificial Light Its Influence upon Civilization When the lacquer is to be dried at a high temperature barium sulphate is preferable, but when it is dried at an ordinary temperature bismuth oxychloride is better. Handbook on Japanning: 2nd Edition For Ironware, Tinware, Wood, Etc. With Sections on Tinplating and Galvanizing It should be borne in mind that the quantity of barium sulphate in this !saturated solution is a constant quantity! for the existing conditions. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes What weight of barium sulphate will be formed at the same time? An Elementary Study of Chemistry Collect, wash, dry, ignite, and weigh the barium sulphate. A Text-book of Assaying: For the Use of Those Connected with Mines. A blank experiment must be done with each new lot of peroxide of hydrogen obtained, which always gives under 0.1 barium sulphate with me. Scientific American Supplement, No. 362, December 9, 1882 The weight of barium sulphate obtained by ignition of the filter and its contents, multiplied by 0.137, gives the amount of sulphur present in the acetylene in the form of sulphuretted hydrogen. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power Iron is usually found in the precipitate of barium sulphate when thrown down from hot solutions in the presence of ferric salts. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The contamination of the barium sulphate by iron is much less in the presence of ferrous than ferric salts. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Moreover, the use of hot concentrated hydrochloric acid causes a loss by dissolving barium sulphate. A Text-book of Assaying: For the Use of Those Connected with Mines. It should be noted that this method can be applied to the purification of a precipitate of barium sulphate if contaminated by most of the substances mentioned in Note 3 on page 114. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes |
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