=OLEOSACCHARA (OLEOSACCHARA), OIL-SUGARS, N.F.= (Elaeosacchara).--Mixtures of volatile oil (2%) with sugar in fine powder.
=Oleum Aethereum (Ol. Aether.), Ethereal Oil, N.F.=--A volatile liquid consisting of equal volumes of heavy oil of wine (chiefly ethyl esters of sulphuric acid) and ether. An indefinite and obsolete ingredient of the medieval "Hoffmann's anodyne."
=Oleum Amygdalae Amarae (Ol. Amygd. Amar.), Oil of Bitter Almond, U.S.P.= (Bitter Almond Oil).--A volatile oil yielding benzaldehyde (not less than 85%) and hydrocyanic acid (about 3%).
Slightly soluble in water; miscible with alcohol or ether.
ACTION AND USES: Flavoring agent, especially for emulsions. Also used as a "sedative," but probably without value.
_Aqua Amygdalae Amarae (Aq. Amygd. Amar.), Bitter Almond Water, U.S.P._--A solution of oil of bitter almond in water.
_Elixir Amygdalae Compositum (Elix. Amygd. Co.), Compound Elixir of Almond, N.F._--Oil of bitter almond, vanillin, orange flower water, syrup, water and alcohol. Absolute alcohol content about 5 per cent.
_Spiritus Amygdalae Amarae (Sp. Amygd. Amar.), Spirit of Bitter Almond, U.S.P._--Oil of bitter almond, alcohol and water. Absolute alcohol content about 76 per cent.
=Oleum Amygdalae Expressum (Ol. Amygd. Exp.), Expressed Oil of Almond, U.S.P.= (Oil of Sweet Almond).--A fixed oil; similar to olive oil.
ACTION AND USES: Emollient, nutritive and laxative.
=Oleum Anisi (Ol. Anisi), Oil of Anise, Oil of Star Anise, U.S.P.= (Anise Oil).--A volatile oil from anise and from star anise.
Very slightly soluble in water; very soluble in alcohol.
ACTION AND USES: Aromatic carminative and flavor.
DOSAGE: 0.2 Cc. or 3 minims (U.S.P.), on sugar.
_Aqua Anisi (Aq. Anisi), Anise Water, U.S.P._--A solution of oil of anise in water.
_Spiritus Anisi (Sp. Anisi), Spirit of Anise, U.S.P._--Oil of anise (10%) in alcohol. Absolute alcohol content about 85 per cent.
=Oleum Aurantii (Ol. Aurant.), Oil of Orange, U.S.P.= (Oleum Aurantii Corticis, U.S.P. VIII, Orange Oil, Oil of Sweet Orange).--A volatile oil.
Nearly insoluble in water; soluble in alcohol and ether.
_Spiritus Aurantii Compositus (Sp. Aurant. Co.), Compound Spirit of Orange, U.S.P._--Oils of orange, lemon, coriander and anise, in alcohol. Absolute alcohol content about 69 per cent.