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Dihydrogen Pyrophosphate

To 100 ml. of a saturated aqueous solution of tetrasodium pyrophosphate at 40° there is added 75 ml. of glacial acetic acid. After the acetic acid has been added, the temperature is brought back up to 40° and the solution agitated until crystallization is complete (approx. 2 to 3 hours). Crystals will appear in 30 to 60 minutes and grow slowly. When crystallization has proceeded for about 30 minutes, the temperature may be dropped slowly to 30°, but not less. The crystals are filtered off using vacuum, washed with two portions of ice water, and dried at 100°. This procedure yields about 6 g. of anhydrous crystals which, if grown slowly enough, are of sufficient size for study under a microscope. [Pg.99]

Oisodium dihydrogen pyrophosphate Pyrophosphoric acid, disodium salt (8) Diphosphoric acid, disodium salt (9) (7758-16-9)... [Pg.246]

AMINES-CYCLOALIPHATIC AMINES] (Vol 2) Calcium dihydrogen pyrophosphate [14866-19-4]... [Pg.152]

Monometaphosphates.—By heating microcosmic salt, (NH4)NaHP04, on a gradually rising temp., T. Fleitmann and W. Henneberg, obtained results similar to those previously obtained by T. Graham, first disodium dihydrogen pyrophosphate, and then a vitreous cake, which, when treated with an excess of water... [Pg.984]

See other pages where Dihydrogen Pyrophosphate is mentioned: [Pg.152]    [Pg.294]    [Pg.333]    [Pg.335]    [Pg.335]    [Pg.231]    [Pg.336]    [Pg.336]    [Pg.336]    [Pg.336]    [Pg.337]    [Pg.55]    [Pg.206]    [Pg.206]    [Pg.208]    [Pg.209]    [Pg.239]    [Pg.240]    [Pg.242]    [Pg.244]    [Pg.108]    [Pg.123]    [Pg.214]    [Pg.244]    [Pg.294]    [Pg.333]    [Pg.335]    [Pg.335]    [Pg.238]   


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