4284. Ozone Ether

4284.    Ozone Ether. By agitating ether in a flask with binoxide of barium, adding gradually perfectly pure and very dilute hydrochloric acid, occasionally cooling and subsequently allowing the ether to settle, we obtain a liquid which has been recommended as a disinfecting, bleaching, and cleansing agent, and as a test for chromic acid, which it instantly turns indigo blue. According to Boettger, this does not contain ozone, but binoxide of hydrogen, which is equivalent to it.

4285. Tests for the Purity of Ether

4285.    Tests for the Purity of Ether. Pure ether should be neutral to test paper; vaporize totally when exposed to the air; when shaken in a graduated tube with half its volume of a concentrated solution of chloride of calcium, its volume should not be lessened; water should dissolve only 1/10 its volume of ether, and remain transparent. Dry carbonate of potassa or tannin shaken with ether in a test-tube will become moist or form a syrupy solution, in case any water is present. The presence of alcohol is shown by shaking the ether with water, its solubility in water being the greater in direct proportion to the quantity of alcohol which it contains.

4286. To Find the Percentage of Ether in a Mixture of Ether and

4286. To Find the Percentage of Ether in a Mixture of Ether and. Alcohol. By ascertaining the specific gravity at 60° Fahr. of a mixture of ether and alcohol, the following table will give the percentage of absolute ether contained in the mixture:

Table of Percentage op Ether.

Spec. Grav.

Per cent.

Spec. Grav.

Per cent.

0.7198

100

.7673

65

.7246

95

.7636

60

.7293

90

.7701

55

.7343

85

.7772

50

.7397

80

.7840

45

.7455

75

.7880

40

.7514

70

    

4287. Nitric Ether

4287.   Nitric Ether. Take 50 parts nitric acid, specific gravity 1.375, dissolve in it 2 or 3 parts nitrate of urea, and add 50 parts alcohol. Distill until 7/8 of the whole has passed over; agitate the distillate with a little water to separate the ether, and preserve the heavier portion. It has a specific gravity of 1.112; its vapor is explosive when strongly heated, consequently great care is necessary in the distillation, to keep the heat down to the lowest working point, and to distill only small quantities at a time. (Millan.) (See directions for Sulphuric Ether, in No. 4280.)