Strontium dihydrogen orthoarsenate

The salt may also be obtained by the action of hot water on strontium dihydrogen orthoarsenate 8 or on the pyroarsenate 9 or by the action of ammonia on a hot solution in hydrochloric acid of the precipitate obtained by mixing solutions of strontium chloride and sodium monohydrogen orthoarsenate.10 In the last case the anhydrous salt crystallises out, but if the mother liquor is kept in an atmosphere of ammonia, the monohydrate, SrHAs04.H20, crystallises out. The density of the latter is 3-606 at 15° C. and of the anhydrous salt 4-035. The monohydrate becomes anhydrous at 130° C. and at a higher temperature yields the pyroarsenate.11... 

Strontium Dihydrogen Orthoarsenate, Sr(H2As04)2, may be prepared 12 by adding 24 g. of strontium hydroxide to an aqueous solution of arsenic acid (containing 60 g. As2Os in 90 c.c.) and heating until a... 

---

See also in sourсe #XX -- [ ]

---