A dictionary of chemical solubilities : inorganic / by Arthur Messinger Comey.

  • Comey Arthur Messinger, 1861-
Date:
1896
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Licence: Public Domain Mark

Credit: A dictionary of chemical solubilities : inorganic / by Arthur Messinger Comey. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    Sp. gr, of N£4W04 + Aq at 24'5° containing : 5 10 15 % Na2W04 + 2H20, 1-036 1-075 1-119 20 25 30 % Na2W04 + 2H20, 1-166 1-215 1-274 35 . 40 44 % Na,W04 + 2H,0. 1-349 1-430 1-492 (Franz, J, pr, (2) 4. 238.) NiioWO^ + Aq is pptd. by HCl, HNO3, or lIoSOi + Aq, but not by H^SOs, HI, HCN, oxalic, or tartaric acids+ Aq, but pptn. by the former acids is not prevented by ])resence of the latter, but when heated with HC2H3O2 + Acj, or in presence of HjPO^ + Aq, mineral acids cause no ppt. (Zettnow, Pogg, 130. 16.) Iiisol. in alcohol. (Riche, A. ch. (3) 60. 52.) Sodium (^/tungstate, Nj^WjOy. Sol. in 1I.,0 by iieating several hours to 130- 150. (Kno'rre, J. pr. (2) 2T. 80.) + 6H„0. Sol. in 13 pts. H.p at 15°. (Lefort, C. R. 88. 798.) Sodium ^ritungfltate, NaoW30io + 4HoO. Sol. in 1 pt. HoO. Decomp. on standing into sol. ^cimtungstate and insol. t^t'tungstate. (Lefort, C. R. 88. 798.) Neither this nor the other intungstates of Lefort exist, according to Knorre (J. pr. (2) 27. 49). Sodium wictetmigstate, Na2W40i3. Anhydrous. Insol. in HjO. + IOH2O. Sol. at 13° in 0-0935 pt. HjO to form a solution of 3-02 sp. gr. (Scheibler.) Sol. at 19° in 0-195 pt. H.,0. (Forcher.) Precipitated by alcoliol. Sodium ;jc?t<ntung8tate, No^WgOig. SI. sol. in H.^O by heating 3 hours at 150°. (Knorre, J. pr. (2) 27. 49.) Sodium tungstate, acid, Na4\V30n + 7H20 (?). Sol. in H2O. (Scheibler.) Mixture of Na-jW^Oij and NajWO^. (Knorre, J. pr. (2) 27. 49.) Na^WnOn + llHaO. Efflorescent. Sol. in HjO. (Marignac.) 100 pts. HjO dissolve 16 pts. at 15°. (Lefort, A. ch. (5) 9. 97.) Formula is 4Na20, 10WO;, + 23H,2O, accord- ing to Gibbs (Proc. Am. Acad. 16. 5). Sodium oc^utungstate, NagWgOas. Insol. in H2O. Very difficultly attacked by acids and alkalies. (Knorre.) + 12H2O. Easily sol. in cold HoO, and can be recryst. without decomp. (Ullik, W. A. B. 66, 2. 157.) Sodium tungstate, Na6W,037 (?). -i-16H.jO (?). (Marignac,A. ch. (3) 69. 51.) + 2IH2O (?). Much more soL and much more rapidly than the paratungstate. (Ma- rignac.) Sodium jj;a/-atungstate, Nai(,Wi204j + 2IH2O. -f25H,0. -f 28H20 = 3Nar,\V7024 + 16H20, according to Lotz and Scheibler. Sol. in 8 pte. cold H2O (Anthon); in 12-6 pts. at 22° (Forcher). Sol. in about 12 pts. HjO. (Marignac.) The aqueous solution saturated at 35-40° contained to 1 pt. of the salt, after : 1 12 77 227 410 days, at 18° 18° 18° 16° 20° 9-25 11-26 10-92 11-90 11*74 pts. HjO. The solution saturated by very long boiling, after a part of the salt had crystallised out, contained, after : 1 2 12 days, 0-68 0-91 2-59 pts. H2O to 1 pt. salt, 72 222 405 days, 6-88 9-75 8-80 pts. H2O to 1 pt. salt. (Marignac.) Decomp. by boiling with HjO. (Knorre, B. 18. 2362.) Sodium strontium ;)amtung8tate, Na^O, 4SrO, 12WO;, + '2yII.,0. (Gonzalez, J. pr. (2) 86. 44.) Sodium thorium tungstate, Na4Th(W04)4. Insol.. in H2O. Slowly sol. in dil. acids, easily in cone. HCl-l-Aq. (Hogbom, Bull. Soc. (2) 42. 2.) Sodium yttrium tungstate, Na8Y2(W04)7. Insol. in H2O, and very slowly attacked by dil. acids. (Hogbom, Bull. Soc. (2) 42. 2.) Sodium zinc ;>aratungstate, Na20, 2ZnO, 7WO3-I-I5H2O. Difficultly sol. in cold, more sol. in hot HjO. (Knorre, B. 19. 823.) + 2IH2O. (Knorre.) Sodium tungstate timgsten oxide, Na2W04, Yellow tungsten bronze. Gradually de- liquesces on air. Not decomp. by any acid, even aqua regia, except HF, or Dy alkalies. (Wohler, Pogg. 2. 350.) Correct formula is Na^WgOig, according to Phillip (B. 16. 499). Sol. in ammoniacal silver solution with separation of Ag. Easily sol. in boiling alka- line iKjtassium ferricyanide 4-Aq. (Phillip, B. 12. 2234.) Sodium tungstate tungsten oxide, NaoW04, 2\V205. Blue Iwujstcn bronze. Not attacked by acids or alkalies. (Scheibler.) Correct formula is Na-jWjOis, according to Phillip (B. 16. 506). Sol. in ammoniacal silver solution with separation of Ag. Na4W50i5. Properties as above. (Phillip, B. 16. 499.) Na.AV.jO9. Properties as above. (Phillip.) Strontium timgstate, SrWO^. Precipitate. (SchuU^e.) Sol. in about 700 pts. B..f>. (Lefort.)