Incompatibilities in prescriptions : for students in pharmacy and medicine and practicing pharmacists and physicians / [Edsel Alexander Ruddiman].

  • Ruddiman, Edsel A. (Edsel Alexander), 1864-1954
Date:
1900
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Licence: In copyright

Credit: Incompatibilities in prescriptions : for students in pharmacy and medicine and practicing pharmacists and physicians / [Edsel Alexander Ruddiman]. Source: Wellcome Collection.

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    ferrous chloride (N. F.) or a saturated solution of ferrous sulphate does not gelatinize mucilage of acacia. 5, A saturated solution of borax forms a more or less translucent mass with mucilage of acacia. By diluting the borax solu- tion with an equal volume of water and the mucilage with an equal volume of water, no coagulation takes place. The coagulation may also be prevented by adding three or four drops of glycerin or honey to one dram of the borax solution. Either glycerin or honey decomposes borax to some extent, liberating boric acid, but not enough need be added to make the solution acid. The official syrup or a solution of glucose tends to prevent the ceagulation but is not as effective as glycerin. 6. A solution of lead subacetate (not the neutral lead acetate), even if quite highly diluted, will give white, opaque, geladino.\LS._jpa^es _\vhen mixed with mucilage of acacia. ‘ Diluting the mucilage with several volumes of water does not prevent coagulation although glycerin and syrup do to some extent. 7. A solution of an oxalate or a carbonate when mixed with mucilage of acacia will give a white precipi- tate of calcium oxalate or calcium carbonate. 8. A saturated solution of mercuric chloride with an equal volume of muci- lage of acacia slowly gives a white precipitate. 9. Acacia is nearly insoluble in alcohol, consequently when alcohol or a preparation containing strong alcohol is added to mucilage of acacia in sufficieHi,t amount to make the mixture about fifty or sixty per cent, of alcohol, the acacia is precipitated. The precipitate redissolves on subsequent dilution with water. 10. Sulphuric acid converts acacia into arabic and then metarabic acid and precipitates calcium sulphate (U. S. D., 8). Dilute sulphuric acid converts it into a sugar (M. & M., I. 296). A strong solution of a sulphate gives a precipitate of calcium sulphate, ii. Dilute nitric acid converts acacia into mucic, saccharic, oxalic, and tartaric acids (U. S. D., 8). 12. In the presence of acacia, dilute solutions of salts of mercury, lead, copper, antimony, silver, iron, or arsenic do not give precipitates with hydrogen sulphide or alkaline sulphides,