A Guide to the Qualitative And Quantitative Analysis of the Urine
The book A Guide to the Qualitative And Quantitative Analysis of the Urine was written by author Neubauer, C. (Carl), 1830-1879 Here you can read free online of A Guide to the Qualitative And Quantitative Analysis of the Urine book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Guide to the Qualitative And Quantitative Analysis of the Urine a good or bad book?
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I., fig. 6; 2'° Aufl., Taf. II;, fig. 6.) C. Chemical Properties. At 240° C. benzoic acid sublimes un- decomposed, its vapors irritate the throat and excite cough- ing. It is difficultly soluble in cold water, more easily in hot water; alcohol and ether take it up with toleralale easp. Its solutions redden litmus. Benzoic acid volatilizes with aqueous vapor ; therefore, only neutral solutions can be concentrated by evaporation. 1. The benzoates are mostly soluble in water, only those of the hea...vy metals are difficultly soluble. The alkaline ben- zoates dissolve in alcohol. 2. Strong acids decompose benzoates when in solution with the separation of benzoic acid in white shining scales. 3. Chloride of iron gives in a solution of alkaline benzoates a brownish-yellow precipitate of benzoate of iron, which is de- composed by ammonia with the separation of ferric hydrate and formation of benzoate of ammonium. Benzoate of iron treated with a little hydrochloric acid dissolves with the sepa- ration of benzoic acid.
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