 ... distilled water with nearly twice its weight of crystals of pure zinc sulphate, and adding zinc oxide in the proportion of about 2 per cent, by weight of the zinc sulphate crystals to neutralise any free acid. The crystals should be dissolved with...  Bulletin of the Bureau of Standards - Página 68por United States. Bureau of Standards - 1904Vista completa - Acerca de este libro
 | 1895 - 1104 páginas
...per cent, by weight of the zinc sulphate crystals to neutralize any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised must not exceed 30° C. Mercurous sulphate, treated as described in 3, shall be added in the proportion... | |
 | National Academy of Sciences (U.S.) - 1888 - 840 páginas
...twice its weight of crystals of pure Kino sulphate and Adding nine oxide in the proportion of about 2 per cent, by weight of the zinc sulphate crystals to neutralize any free acid. The crystals should be dissolved with the aid of gentle heat, but the tem|teratnro to which the... | |
 | National Academy of Sciences (U.S.) - 1890 - 682 páginas
...per cent by weight of the zinc sulphate crystals to nentralize any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised must not exceed 30° C. Mercurous sulphate, treated as described in 3, shall be added in the proportion... | |
 | Great Britain - 1894 - 610 páginas
...per cent, by weight of the zinc sulphate crystals to neutralise any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature...should be added in the proportion of about 12 per cenc. by weight of the zinc sulphate crystals to neutralise any free zinc oxide remaining, and the... | |
 | 1893
...of the zinc sulphate crystals to neutralize any free acid. (See notes below.) The crystals should be dissolved with the aid of gentle heat, but the temperature...which the •solution is raised should not exceed 30 deg. C. Mercurous sulphate treated as described in paragraph 4 should be added in the proportion of... | |
 | American Institute of Electrical Engineers - 1893 - 780 páginas
...of the zinc sulphate crystals to neutralize any free acid. (See notes below.) The crystals should be dissolved with the aid of gentle heat, but the temperature...which the solution is raised should not exceed 30 decj. C. Mercurous sulphate treated as describe'l in paragraph 4 should be added in the proportion... | |
 | 1893 - 630 páginas
...sulphate crystals to neutralise any free acid.* The crystals should be dissolved with the aid of a gentle heat, but the temperature to which the solution is raised should not exceed SOdeg. C. Mercurous sulphate, treated as described in 4, should be added in the proportion of about... | |
 | British Association for the Advancement of Science - 1894 - 1204 páginas
...per cent, by weight of the zinc sulphate crystals to neutralise any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature...per cent, by weight of the zinc sulphate crystals to neutralise any free zinc oxide remaining, and the solution filtered, while still warm, into a stock... | |
 | British Association for the Advancement of Science - 1894 - 1104 páginas
...per cent, by weight of the zinc sulphate crystals to neutralise any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature...per cent, by weight of the zinc sulphate crystals to neutralise any free zinc oxide remaining, and the solution filtered, while still warm, into a stock... | |
 | Silvanus Phillips Thompson - 1894 - 666 páginas
...per cent by weight of the zinc sulphate crystals to neutralize any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature...should not exceed 30° C. Mercurous sulphate treated as deseribed in 3 should he added in the proportion of about 12 per rent by weight of the zinc sulphate... | |
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