The acid furnished by this method requires redistillation, and is, moreover, contaminated with some of the fatty products always present in the crude pyrolignite.
Anhydrous Acetic Acid.
Syn.
Acetic Anhydride.
Acetic acid deprived of the elements of water.
| Acetic Acid. | Water. | Acetic Anhydride. |
| 2C2H4O2 | - H2O | = C4H6O3. |
Aromat′ic Acetic Acid. Syn. Aromatic vinegar; A. spirit of v.; Acidum Ace′ticum aromat′icum, L.—Prep. 1. (Ph. E. 1839.) Dried rosemary and origanum, of each 1 oz.; lavender flowers, 1⁄2 oz.; bruised cloves, 1⁄2 dr.; acetic acid (sp. gr. 1·068), 11⁄2 pint; macerate for 7 days, express, and filter. A fragrant and refreshing perfume. Omitted in Ph. E. 1841 and P. B. 1867.
2. (Ph. E. 1817.) As the last, but using distilled vinegar instead of the strong acid of the Pharmacopœia. Inferior.
3. (P. Cod. 1839) Camphor, 2 oz.; oil of lavender, 10 gr.; oil of cinnamon, 20 gr.; oil of cloves, 30 gr.; concentrated acetic acid, 1 pint. Very fragrant and refreshing.
4. (Ph. Bor. 1847; Cod. Med. Hamb. 1845.) Oil of cloves, 1 dr.; oils of lavender and citron, of each 2 scrup.; oils of bergamot and thyme, of each 1 scrup.; oil of cinnamon, 10 drops; strongest acetic acid, 1 oz.; mix. Limpid; yellow-brown; highly fragrant and refreshing. See Acetic Acid (Camphorated), and Vinegar (Aromatic).