Bariums formation

Barium formate [541-43-5] M 211 A, pK 3.74 (for HCO2H). Crystd from warm water (4mL/g) by adding EtOH and cooling. 

The barium or calcium salt of the corresponding acid may be distilled with barium formate —... 

Schimmel Co. have prepared a number of fatty aldehydes bj a modification of this reaction. They distilled mixtures of barium formate with the barium salt of the corresponding acid, in a vacuum, as it was well known that this increases the yield when working with the higher aldehydes, which volatilise with difficulty. 

Ba(CH02)2 (c). Berthelot7 measured the heat of solution of barium formate. 

AIF3H20 aluminum fluoride monohydrate 32287-65-3 25.00 2.1700 1 429 BaC2H204 barium formate 541-43-5 25.00 3.2100 1... 

Tin dimethyl diformate Calcium formate. Barium formate. ... 

But this reaction is of little practical value for the preparation of aldehydes. The second method, which is the real preparation method, consists in the dry distillation of a mixture of the calcium or barium salt of the add with caldum or barium formate ... 

Other preparative methods III. From formic acid or barium formate and phosphoric acid [j. G. Thompson. Ind. Eng. Chem. 

Ba " ions, with irregular eight- and seven-fold co-ordination. The kinetics of the thermal decomposition (608—643 K) of barium formate have been ascertained. Decomposition occurs via two major modes [equations (6) and (7)], with small amounts of HCHO, elemental C, and O2 also being formed. 

In several runs individual subunits were further degraded to locate the position of labeling in the subunits. The routes employed are indicated in Fig. 4. Periodate oxidation was essentially complete within a few minutes and all runs were stopped (by addition of barium hydroxide) after hour in order to avoid overoxidation. Formic acid was absorbed on Dowex-1 (carbonate form) and was later removed from the resin by washing with Q. N sulfuric acid, and ultimately isolated as barium formate. Formaldehyde, which was not absorbed by the resin, was isolated as methylene-bis-methone and identified by melting point and mixture melting point determinations. 

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