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Solvent Power of Glycerine

Klever gives the following parts of various chemicals soluble in 100 parts glycerine. ..

PARTS. 20 20 10 10 15 -50 40 20 4364. Tests for the Purity of Glycerine. Pure glycerine has a neutral reaction, and on evaporation in a porcelain dish leaves only a very slight carbonaceous crust, while the impure has a much greater percentage of coaly matter. The pure article does not become brown when treated, drop by drop, with concentrated sulphuric acid, even after several hours; the impure becomes brown even when but slightly adulterated. Pure glycerine, treated with pure nitric acid and a solution of nitrate of silver, does not become cloudy, while the impure exhibits a decidedly milky appearance. Sometimes the impure article 5.50 becomes blackened with the sulphide of amof ammonium. Oxalate of ammonia produces a black clouding; lime-water sometimes causes a milky discoloration. Pure glycerine, how- 2.25 ever, constantly remains perfectly uncolored, and clear as water, the impure becoming col- -.50 ored to a greater or less extent. If a few 6.70 drops are rubbed between the fingers, pure .25 glycerine causes no fatty smell; the contrary is the case with the impure, especially if a few introduced. drops of dilute sulphuric acid be introduced. ac (Köller.) (See No. 1151.) -20 3 5 Arsenious acid Arsenic acid.

Benzoic acid Boracicacid..

Oxalic acid.

Tannic acid.

Alum....

Carbonate of ammonia.

Muriate of ammonia.

Tartrate of antimony and potassa Atropia....

Sulphate of atropia. 33 Chloride of barium. .10 Brucia Sulphide of calcium.

Quinine.

Sulphate of quinine.. ......

Tannate of quinia Acetate of copper. 10 Sulphate of copper. 30 Tartrate of iron and potassa. 8 Lactate of iron.. 16 Sulphate of iron. 25 Corrosive sublimate..

Cyanide of mercury Iodine.

Morphia..

Acetate of morphia..

Muriate of morphia. ..

Phosphorus.

Acetate of lead. 20 Arseniate of potassa. 50 ...

Chlorate of potassa.

Bromide of potassium Cyanide of potassium.

Iodide of potassium.

Arseniate of soda.

Bicarbonate of soda. ..

Borate of soda...

Carbonate of soda.

Chlorate of soda Sulphur..........

Strychnia........

Nitrate of strychnia.

Sulphate of strychnia.

Urea....

Veratria...

Chloride of zinc..

Iodide of zinc..

Sulphate of zinc ... 27 20