Griffith's materia medica and pharmacy : for the use of medical and pharmaceutical students.

Date:
1887
Catalogue details

Licence: Public Domain Mark

Credit: Griffith's materia medica and pharmacy : for the use of medical and pharmaceutical students. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

    453/480 (page 441)
    VI. VOLUMETRIC SOLUTION OF SODA. (NaHO = 40.) Preparation.—Fill a burette with the solation of soda, and cautiously drop this into 1,000 grain measures of the volumetric solution of oxalic acid until the acid is exactly neutralised. ISTote the number of grain-measures [n) of the solution used, and having then introduced 9,000 grain- measures of the solution of soda into a graduated jar, aug- ment this quantity by the addition of water until it becomes 9,000 X 1,000 grain-measures. If, for example, n — 930, the n 9,000 X 1,000 9,000 grain-measures should be augmented to 930 = 9*677 grain-measures. One thousand grain-measures of this solution contain one equivalent in grains (40) of hydrate of soda, and will therefore neutralise one equivalent in grains of any monobasic acid. [See p. 21 and passim under the different acids for full explanation.] Use in testing the following substances :— Grains Gr.-measures weight. of Vol. Sol. 445*4 of Acetum will require 402 182-0 „ Acid. Acet. ,, 1,000 440-0 „ Dil. 313 60-0 „ „ Glac. 990 70-0 „ •,, Citric • „ 1,000 810-0 „ ,, Hydrobrom. Dil. „ 1,000 114-8 „ ,, Hydrochlor. 1,000 345-0 „ Dil. 1,000 120-0 „ ,, Lacticum j. 1,000 800-0 „ Dil. 1,000 1,000 90-0 „ „ Nitric „ 361-3 „ „ Dil. V „ Nitro-Hydroch. Dil. „ 1,000 352-0 „ 883 50-0 „ „ Sulph. 1,000 195 0 „ „ „ Arom. ., 500 359-0 „ „ Dil. 1,000 25-0 „ „ Tart. „• 330