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" NaCNHJHPOj added, and ammonia drop by drop, with constant stirring until the precipitate is again formed as described and the ammonia is in moderate excess. "
Practical Cement Testing - Page 298
by W. Purves Taylor - 1905 - 320 pages
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Bulletin, Volume 20, Part 1

American Society for Testing Materials - Building materials - 1920 - 868 pages
...solution with water to about 100 cc., add 1 cc. of a saturated solution of Na (NH4) HPO4, and NH4OH drop by drop with constant stirring, until the precipitate is again formed as above described and the ammonia is in moderate excess. Then allow it to stand in a cool atmosphere...
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Directory of American Cement Industries and Hand-book for Cement Users

Charles Carroll Brown - Cement - 1902 - 764 pages
...ortho-phosphate begins to form and then in slight excess, the stirring being continued for several minutes. It is then set aside for several hours in a cool atmosphere...filtered. The precipitate is re-dissolved in hot dilute liri,the solution made up to about 100 cc, 2 cc of a saturated solution of Na(NH4) HPO4 added, and...
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Review of American Chemical Research, Volume 8

Chemistry - 1902 - 594 pages
...the solution is made up to about 100 cc., 2 cc. of a saturated solution of sodium ammonium phosphate added, and ammonia, drop by drop, with constant stirring...until the precipitate is again formed as described. It is then allowed to stand for about two hours, when it is filtered on paper ,or a Gooch crucible,...
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Circular of the Bureau of Standards, Issues 351-390

Weights and measures - 1927 - 524 pages
...the solution to about 100 ml, add 1 ml of a saturated solution of sodium-ammoniumhydrogen phosphate and ammonia, drop by drop, with constant stirring,...until the precipitate is again formed as described above and the ammonia is in moderate excess. Allow the precipitate to stand about two hours; filter...
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Bulletin, Issue 3

Geology - 1904 - 430 pages
...ammonium magnesium orthophosphate begins to form, and then in slight excess with constant stirring. It is then set aside for several hours in a cool atmosphere...and filtered. The precipitate is redissolved in hot hydrochloric acid, the solution made up to about 10o cc., 2 cc. of a saturated microcosmic salt solution...
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Bulletin, Volume 3

Ohio. Division of Geological Survey - Geology - 1904 - 416 pages
...ammonium magnesium orthophosphate begins to form, and then in slight excess with constant stirring. It is then set aside for several hours in a cool atmosphere...and filtered. The precipitate is redissolved in hot hydrochloric acid, the solution made up to about 10o cc., 2 cc. of a saturated microcosmic salt solution...
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The Manufacture of Hydraulic Cements

Albert Bleininger, Geological Survey of Ohio - Cement - 1904 - 418 pages
...hydrochloric acid, the solution made up to about 100 cc., 2 cc. of a saturated microcosmic salt solution added and ammonia, drop by drop, with constant stirring...until the precipitate is again formed as described. Allow to stand for about two hours, when it is filtered on paper or in a Gooch crucible, cooled and...
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Standard Methods of Testing and Specifications for Cement ...

Portland Cement Association - Cement - 1905 - 44 pages
...ortho-phosphate begins to form, and then in moderate excess, the stirring being continued for several minutes. It is then set aside for several hours in a cool atmosphere...up to about 100 cc, 1 cc of a saturated solution of N"a(NH 4 )HPO^ added, and ammonia drop by drop, with constant stirring until the precipitate is again...
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A Hand-book for Cement Users

Charles Carroll Brown - Cement - 1905 - 440 pages
...ortho-phosphate begins to form, and then in moderate excess, the stirring being continued for several minutes. It is then set aside for several hours in a cool atmosphere...up to about 100 cc, 1 cc of a saturated solution of NaCNHJHPOj added, and ammonia drop by drop, with constant stirring until the precipitate is again formed...
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A Treatise on Concrete, Plain and Reinforced: Materials, Construction, and ...

Frederick Winslow Taylor, Sanford Eleazer Thompson - Concrete - 1905 - 664 pages
...filtered. The precipitate is redissolved in hot dilute HC1, the solution made up to about 100 cc, i cc of a saturated solution of Na(NH4)HPO4 added, and...as described and the ammonia is in moderate excess. It is then allowed to stand for about 2 hours when it is filtered on a paper or a Gooch crucible, ignited,...
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