(C2H5)2O=73.84. Synonyms. - Sulphuric Ether. Ethylic Ether. Ethyl Oxide. A liquid composed of about 96 per cent., by weight, of absolute Ether, and about 4 per cent. of Alcohol containing a little water.


Alcohol is distilled with Sulphuric Acid. Ethyl Sulphuric (Sulphovinic) Acid and water are first formed. C2H5OH+H2So4=C2Hso4 +C2H5OH=(C2H5)O+H2So4. This process is theoretically continuous, the Sulphuric Acid last formed again acting on fresh Alcohol as it is supplied. The Ether is freed from water by re-distillation with Calcium Chloride and Lime.


A transparent, colorless, mobile liquid, having a characteristic odor, and a burning and sweetish taste. It is very inflammable, boils at about 98.6 F.; 370 C, and burns with a white flame. Sp. gr., 0.725 to 0.728. Solubility. - In about 10 volumes of water.


Water, alcohol and fixed impurities.

Dose, 5 to 60 m.; .30 to 4.00 c.c


1. Spiritus Atheris. Spirit Of Ether

Spiritus Atheris. Spirit Of Ether. Ether, 325; Alcohol, 675. Dose, 1/4 to 1 fl. dr.; 1. to 4. c.c.

2. Oleum Aethereum. Ethereal Oil

Oleum Aethereum. Ethereal Oil. A volatile liquid composed of equal volumes of heavy Oil of Wine and Ether. Alcohol, 1000; Sulphuric Acid, 1000; distilled water, 25; Ether, a sufficient quantity; by distillation.


A transparent, nearly colorless, volatile liquid, of a peculiar, aromatic, ethereal odor, a pungent, refreshing, bitterish taste, and a neutral reaction. Sp. gr., 0.910. Ethereal Oil is used to prepare Spiritus AEtheris Compositus.

3. Spiritus AEtheris Compositus. Compound Spirit of Ether. Synonym. - Hoffman's Anodyne. Ether, 325; Alcohol, 650; Ethereal Oil, 25.

Dose, 5 to 60 m.; .30 to 4.00 c.c