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5. On the Formation and Decomposition of some Chlorinated Acids
Published online by Cambridge University Press: 15 September 2014
Extract
1. On the Rate of the Action of a Large Excess of Water on Monochloracetic Acid at 100° C.—When monochloracetic acid is heated with water, double decomposition takes place, glycollic and hydrochloric acids being formed; and conversely, when glycollic acid is heated with hydrochloric acid, it is converted into monochloracetic acid and water. A similar reaction takes place with the two monochloropropionic and corresponding lactic acids, and probably with all their homologues.
- Type
- Proceedings 1870-71
- Information
- Copyright
- Copyright © Royal Society of Edinburgh 1872
References
page 419 note * Berthelot (Ann. de Chim. et de Phys. [3], LXV., 401) made use only of baryta, his objections to potash and soda being that they always contain carbonate, and that their salts with organic acids always have a more or less alkaline reaction. The first of these objections may be got rid of by keeping the solution, freed from CO2 in the first instance by lime water, in a number of small bottles filled full up to their tightly fitting corks. The second I have found not to apply to the bodies here in question. There is no doubt, however, that baryta solution does present considerable advantages in the greater ease with which it can be procured in a state of absolute purity; and that any carbonic acid which it may absorb is at once eliminated, thereby, however, altering the strength of the solution. My principal objection to it was its great tendency to crystallise even in solutions a long way removed from saturation.