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

  • Comey Arthur Messinger, 1861-
Date:
1896
Catalogue details

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.

    507/544 (page 483)
    Tungsten bronze. Sec— Tungstate tungsten oxide, sodium. Tungstate tungsten oxide, potassium. Tungstate tungsten oxide, lithium. Tungsten r^t chloride, WClj. Decomp. on the air or with H-^O. (Ro.scoe.) Tungsten <c<rrtchloride, WCI4. Deliquescent. Partly sol. in H._,0, with sub- sequent decomposition. (Roscoe.) Tungsten pc?^/rt chloride, WCl,. Very deliquescent. Dcconip. with 11.^0 with hissing and evolution of iieat and .separation of Very si. sol. in CS.j. (Ro.scoe.) Tungsten Aca;achloride, WClg. Not deconip. by moist air or H„0. Decomp. by alcohol. Very sol. in CSj. (Roscoe.) Ea.sily sol. in POCI3. (Teclu, A. 187. 255.) Tungsten '//iodide, WI.2. Not decomp. by H._,0. (Roscoe, A. 162. 366.) T/ itungsten nitride, AVaN,. (Uhrlaul).) Tungsten nitride amide, W3N8H4 = 2WNo, W(NH2)o. Not attacked by acids or caustic alkalies+ Aq. (Wohler, A. 73. 191.) Timgsten nitride amide oxide, W7N8H404 = 3WN.,, W2(NH2).i, 2W0.. Not attackefl by acids or alkalies. CWlililci-.) Tungsten ;/io»oxide, WO. Insol. in HoO. Not attacked by HCl, HF, H2SO4, of KOH + Aq. HNOa + An or aqua regia convert it into WO3. (Headuen, Sill. Am. J. 146. 280.) Tungsten i/t oxide, WOj. [a) When prepared in the dry way, is at- tacked only by aqua regia, which oxidises to WO;,. {h) When moist, is sol. in HCl or H.JSO4 +Aq, also in KOH + Aq. lusol. in NH40H + Aq. (Riche, A. oh. (3) 60. 5.) Tungsten oxide, blue. W.,05 (Riclie, A. ch. (3) 60. 33) ; WgOg (v. Uslai); W40,i (Gmelin). All are probably the same substance. Not attacked by boiling HNO3 or aqua regia. Slowly sol. in boiling KOH + Aq. Tungsten </•! oxide, WO3. In.sol. in H„0 or acids. SI. sol. in dil. KOH + Aq, NaOH + A<i, Na.,C03 + Aq, or H.^COj + Aq, but easily sol. in cone, boiling solutions of above. NH40H + Aq wlien boiling has a solvent action. Min. Tungstite. Insol. in acids. Sol. in NH40H + Aq. Tungsten oxybromide, etc. Sec Tungstyl bromide, etc. Tungsten phosphide, W4P2. Not attacked by any acid, not even by aqua regia. (Wohler and Wright, A. 79. 244.) W3P4. Timgsten f?jselenide, WSe2. (Uelsniann.) Tungsten ^Jiselenide, WScj. Easily sol. in alkalies, alkali sulphides or .seleuides +Aq. (Uelsmanu, Jahrb. f. Ch. 1860. 92.) Tungsten (//sulphide, WS2. Oxidised by HNOj + Aq. (Berzelius.) Tungsten ^r/sulphide, WS3. Somewhat sol. in cold, abundantly in hot H.2O, but separated out by the addition of salts, especially NH4CI, or acids. Sol. in alkali sulphides, ana hydrosulphides + Aq. Sol. in caustic alkalies, and alkali carbonates + Aq. Slowly sol. in NH4OH + Aq in the cold, Tungstic acid, H0WO4. Insol. in HjO. Sol. in HF, Insol, in tung- statcs + Aq, H4WO5. Precipitate, SI, sol. in HjO and aqueous solutions of the tungstates. Sol. in 250-300 pts. H2O. When freshly pptd. sol. in alkali hydrates or carbonates + Aq. (Anthon, J. pr. 9. 6.) i/eiatungstic acid, HjW^Oij + 7H.p, Sol, in HjO. Solution may be boiled and evaporated to a syru]iy consistency, wlien it suddenly gelatinises and ordinary tungstic acid is precipitated. Sp. gr. of solution of metatungstic acid at IT'S containing: 2-79 12-68 27-61 43-75 % WO3, 1-0257 1-1275 1-3274 1-6343 (Scheibler, J, pr. 83. 273.) Sp. gr. of aqueous solution calculated by M = Mendelejelf, and G = Gerlach (Z. anal. 27. 300), containing : 5 10 15 20 25 %W03, M 1-047 1-098 1-153 1-214 1-285 G 1-0469 1-0980 ri544 1-2172 1-2873 30 35 40 45 50 % WO3. M 1-366 1-458 1-.555 1-581 (?) G 1-3660 1-4540 1-5527 1-6630 1-7860 Colloidal. Sol. in HoO. Not precipitated by acids or alcohol. Can be evaporated to dryness and heated to 200°, and still remains sol. in H.,0. Sol. in i pt. of H„0. Sp. gr. of aqueous solution containing : 5 20 50 66-5 79-8 %W03. 1-0475 1-2168 1-8001 2-596 3-243 (Graham, Chem. Soc. 17. 318.) Perhaps jjaratungstic acid, HioWi„04i. (Klein, Bull. Soc. (2) 36, 547.) Tungstates. Few normal tungstates are sol. in H2O, even some of the K and NH4 salts are very si. sol.