. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 54 BUULETIISr 983, U. S. DEPARTMENT, OF AGRICULTURE. Theoretically, hydrochloric acid, because of its maximum ionization should produce even greater sugar yields than sulphuric acid. Hydro- chloric acid presents greater technical difficulties than does sulphuric acid, and its cost is greater; however, if the yield were increased sufficiently, the other difficulties could probably be overcome. Two concentrations of hydrochloric acid were therefore tried, one of per cent and another of per cent, based on dry-wo
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 54 BUULETIISr 983, U. S. DEPARTMENT, OF AGRICULTURE. Theoretically, hydrochloric acid, because of its maximum ionization should produce even greater sugar yields than sulphuric acid. Hydro- chloric acid presents greater technical difficulties than does sulphuric acid, and its cost is greater; however, if the yield were increased sufficiently, the other difficulties could probably be overcome. Two concentrations of hydrochloric acid were therefore tried, one of per cent and another of per cent, based on dry-wood weight, and the respective total sugar yields were per cent and per cent. The complete data on cooks Nos. 89 and 90 are given in the tables in the Appendix. That yeast is intolerant of the CI ion is well known, and the laboratory workers were unable, as others before had been, to obtain any fermentations. Unless, therefore, the CI ion is removed by precipitation, as with silver nitrate, fer- mentation is impossible. No fermentation was obtained when chlorine or chlorides were used. The chief interest of the following experiments, therefore, is in the data adduced with respect to total sugars, for, as stated before, if it were possible materially to increase the total sugars obtained, other difficulties might possibly be over- come. Spruce. atmospheres; 125 per centof ? per cent of hydrochloric acid j !q' rq per cent of hydrochloric acid , per cent of sulphuric acid plus salt (NaCl) for equation H2S04+Na01= NaHS04+HCl per cent of sulphuric acid plus salt (NaCl) for equation H2S04+2NaCl=Na2S04+ 2 HOI 2 per cent of chlorine from 2 KCIO3+H2SO4+IO HC1= K2S04 -1-6 H20-H> Cl2 per centof sulphuric acid plus 10 per cent of KC103tomake2 KC103+H2S04= K2SOH-2 HCIO3 per cent of sulphuric acid plus 50 per cent of KCIO3 to make 2 KCIO3+ H2S04=K2S04+2 HCIO3 The above table shows no yields of total sugars greater t
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