Disodium hydrogen phosphate dodecahydrate

Dipotassium hydrogen phosphate trihydrate (15.9 g) potassium dihydrogen phosphate (4.0 g) disodium hydrogen phosphate dodecahydrate (7 g) ammonium sulfate (1.2 g) ammonium chloride (0.2 g) magnesium sulfate heptahydrate (1 g) yeast extract (5 g )... 

Disodium hydrogen phosphate Disodium hydrogen phosphate dodecahydrate Dibasic sodium phosphate Dinatrii phosphas anhydricus Dinatrii phosphas dihydricus Dinatrii phosphas dodecahydricus Dibasic sodium phosphate Note that the BP 2004 and PhEur 2005 contain three separate monographs for the anhydrous, the dihydrate, and the dodecahydrate the JP 2001 contains one monograph for the dodecahydrate and the USP 28 contains one monograph for the anhydrous, the monohydrate, the dihydrate, the heptahy-drate, and the dodecahydrate. See also Section 8. 

Additionally, the following aqueous stock solutions are required (a) 0.1 M phosphate buffer of pH 6.8, which per liter solution requires the dissolution of 6.805 g of potassium dihydrogen phosphate and 17.908 g of disodium hydrogen phosphate dodecahydrate (b) 0.005 M copper(II) solution [1.208 g of copper(II) nitrate trihydrate per liter] and (c) 0.01 M ethylene diamine tetraacetic acid (EDTA) (3.7224 g of the disodium salt per liter). 

Disodium hydrogen phosphate dihydrate. See Sodium phosphate dibasic dihydrate Disodium hydrogen phosphate dodecahydrate. See Sodium phosphate dibasic dodecahydrate Disodium hydrogen phosphate heptahydrate. See Sodium phosphate dibasic heptahydrate Disodium hydroxydecyl sorbitol citrate Synonyms Citric acid, 6-(2-hydroxydecyloxy)-2,3,4,5,6-pentahydroxyhexyl ester Classification Organic compd. 

Write formulas for magnesium sulfate heptahydrate and disodium hydrogen phosphate dodecahydrate. 

Disodium hydrogen phosphate dodecahydrate. See Sodium phosphate dibasic dodecahydrate... 

Synonyms Dibasic sodium phosphate dodecahydrate Disodium hydrogen phosphate dodecahydrate Disodium orthophosphate dodecahydrate Disodium phosphate dodecahydrate DSP-12 Sodium monohydrogen phosphate dodecahydrate (2 1 1 12) s-Sodium phosphate dodecahydrate... 

The crystals of heptatahydrated disodium hydrogen phosphate were found by H. Diifet 3 to be isomorphous with the corresponding arsenate. They form monoclinic prisms with axial ratios a h c=l 2047 1 1 3272, and j8=96° 57. He also found the crystals of the dodecahydrated salt to be monoclinic prisms with axial ratios a 6 c=l 7319 1 1 4163, and 8=121° 24. Measurements of these crystals have also been made by E. Mitscherlich, H, J. Brooke, H. Steinmetz, and C. F. Rammelsberg. H. Dufet and A. Joly have measured the rhombic bisphenoidal crystals of dihydrated disodium phosphate and found the axial ratios a h c =0 9147 1 1 5687. Soln. of dodecahydrated disodium hydrophosphate were found by C. Tomlinson, and J. M, Thomson to be readily under cooled, and when crystallization occurs, much heat is evolved, and a mass of radiating crystals is formed. 

Disodium hydrogen orthophosphate, Na2HP04, is obtained in the form of dodecahydrate by neutralizing phosphoric acid with sodium carbonate. It is the ordinary sodium phosphate of commerce, and is a white,... 

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