. Journal. ack, lowered, and moved forward in thebath.—E. [Compound] ; Insoluble, Stable, Pulverulent . M. Muntadas. Fr. Pat. 353,765, April 8, 1905. As insoluble, stable, pulverulent formaldehyde-zinchydrosulphite compound is formed by boiling a mixtureof sodium bisulphite, formaldehyde, zinc dust and sul-phuric acid. The following reaction is stated to takeplace :— 2U\aHS03 + CH20) + 3Zn-l-2H„S04 =2( ZnSO, + CH20) + ZnS04 + Xa2S04 + 2H,0 + insoluble hydrosulphite compound is filtered off,washed, dried, and passed through a sieve. The com- ipound is said to be insoluble
. Journal. ack, lowered, and moved forward in thebath.—E. [Compound] ; Insoluble, Stable, Pulverulent . M. Muntadas. Fr. Pat. 353,765, April 8, 1905. As insoluble, stable, pulverulent formaldehyde-zinchydrosulphite compound is formed by boiling a mixtureof sodium bisulphite, formaldehyde, zinc dust and sul-phuric acid. The following reaction is stated to takeplace :— 2U\aHS03 + CH20) + 3Zn-l-2H„S04 =2( ZnSO, + CH20) + ZnS04 + Xa2S04 + 2H,0 + insoluble hydrosulphite compound is filtered off,washed, dried, and passed through a sieve. The com- ipound is said to be insoluble in water, acids and can be employed advantageously in discharging dyedtextile fabrics ; with caustic soda it is said to form asatisfactory discharge for a-Xaphthylamine Red.— VI.—COLOURING WOOD, PAPER,LEATHER, &c. English Patent. Wood ; Method of Colouring . R. Kornmann. Freiburg, Germany. Eng. Pat. 16,316, Aug. 10. treating wood with a solution of 4 parts of hydrogen. ,l. II, IUII6.] JOURN \l. AMI PATKM LITERATI KK. ( i \l Ml 1066 ?Broxide (10 vola.) and I pari of a rninet dhlorii acid I and dry inp itic appearance of old n 1 . i he acid m < ?? naently neutralised by ammonia. T. I*. B, United Sta n. • Pati feathers , Iruc tit fur the 1 R, WoMTenstoin, Berlin. Pat. 800,197, Sept. 26, 1905. ig. Lut. I I,TIl,.I 1003 ; , 1904, 139 centrated hydrochloric aoid, the first change ia probablyiii ii ezpn i I by the equation : — A <r,f 10HCl = 2AsCla + 2Cl2 + 5HaO, fur111? ii place involving tin- formation of arsenic trisulphide and sulphur from thopliuretted hydrogen. La the concentration of thehydrochlorii a id in condition of equilibrium expressed bj th i is rapidly di placed to the right. A. S. VII. ACIDS, ALKALIS, AND SALTS, ANDNON-METALLIC ELEMENTS. Sulphuric Acid: Refractive Index of , a/ Different titrations. V. H Veley and J. J. Manley. Soc, 1905, 469 18 The refractive indices of acids containing from 1
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