Acidum Carbolicum. Phenol. Phenylic or Phenic Acid. C12H5O,HO. One of the products obtained by the distillation of Coal Tar. Impure Carbolic Acid occurs as a light oily fluid. The pure Acid forms a colourless deliquescent crystalline mass, which fuses at

95°, and passes into vapour at 370°. It has a smoky odour and an acrid taste. It is freely soluble in Alcohol, Ether, and Glycerine; but 100 parts of Water dissolve only 3 parts of the Acid.

Med. Prop. and Action. Escharotic, stimulant, rubefacient, and antiseptic. When given internally, it resembles Ceasote in its power of allaying some forms of vomiting and gastric irritability. Its powers as a disinfecting and deodorizing agent are said to be very marked. A very small quantity added to stinking urine or fetid evacuations rapidly and completely removes all smell. Its antiseptic powers are no less striking. If it be added in very small proportion to freshly voided urine, it will keep it for many months in an unchanged state. In fact, it has a specific action upon all organic and inorganic matter, and preserves it from putrefaction or decay. In addition to its deodorizing and antiseptic properties, it acts when locally applied as an escharotic, or diluted as a stimulant. Internally it may be given in doses of a teaspoonful of the aqueous solution (one part to forty of water) in a tumblerful of water. Externally, the aqueous solution may be employed as a local stimulant; or, if it be desirable to use it in a less diluted state, short of its full action as an escharotic, gr. cxx. of pure Carbolic Acid may be mixed in fl. drm. j. of Liquor PotasssAe and Oss. of water. Or it may be used in the form of ointment (gr. v. - gr. xxx. of Carbolic Acid to Ung. Cet. oz. j.).

* Rev. Med Chir., Feb. 1848. Elements of Therapeutics, 1825. Ranking's Abstract, 1857, vol. xxv. p. 23. § Lond. Med. Rep., vol. iii. p. 7.

|| Ed. Med. and Surg. Journal, vol. x. ¶ Ranking's Abstract, vol. xxi, p. 1, et seq.

Dose, fl. drm. ss. to fl. drm. j. of a solution containing 1 part of the Acid to 40 of water, or ej. of the deliquesced Acid in the form of pill.

726. Therapeutic Uses

Dr. Godfrey* has found the internal use of Carbolic Acid of great service in cases of Gastric Irritability, especially when produced by miasma or sewerage exhalations. He has also seen much benefit from its use in the Vomiting of Pregnancy. It is a valuable remedy in the Flatulence of Old Age, depending upon imperfect digestion, and in Diarrhoea resulting from bad drainage. Dr. Godfrey anticipates much good from it in the treatment of Cholera.

727. In Relaxation Of The Mucous Surfaces, Mr

T. Tuxner,t of Manchester, recommends that a solution of Carbolic Acid in Glycerine be applied by means of a brush or sponge. Its use is indicated in Nasal Polypi, Ozna, and in all putrid discharges from the mouth, throat, nostrils, ears, rectum, and vagina.

728. In Stomatitis, Aphth, Diphtheria, and Ulcerated Sore Throat, the aqueous solution may be used as a gargle. Mr. Turner recommends that the Acid dissolved in Glycerine be applied topically by means of a sponge, in Diphtheria. Care must be taken that the sponge-mop be not saturated, lest a drop should fall into the larynx. The escharotic effect is confined to the surface to which it is applied, and does not spread to the contiguous parts.

729. In Ill-conditioned Ulcers, Sloughing Wounds, Carbuncle, and Cancerous Ulcerations, Carbolic Acid, in different degrees of solution, according to the character of the sore, may be applied. In Cancer it may be used with great advantage. Five grains of the Acid added to oz. j. of Ung. Zinci, and applied night and morning, has the effect of removing all unpleasant odour. Applied in the same form, it cures Fetid Perspirations of the Feet and Arm-pits.

730. In Sinuses Connected With Carious Bone And Fistula, Mr

Turner has employed it with great success. He applies the Acid

* Medical Circular, Dec. 17, 1862.

Paper by Dr. C. Calvert, Lancet, Sept. 26, 1863.

dissolved in Glycerine and smeared on a catgut or wax bougie, taking care to carry it to the bottom of the fistula. It will not succeed in anal fistulAe where there is a communication with the gut. The solution may be injected into sinuses leading to diseased bone; it destroys fetor, and promotes the exfoliation of the necrosed portion.

731. Applied To Hmorrhoids, Carbolic Acid Corrugates And Obliterates The Sac

It coagulates the contents of the pile, which may be squeezed out; the two surfaces then come into contact, and the sac becomes obliterated.

732. In Scabies, the application of Carbolic Acid in the form of ointment soon effects a cure. It is preferable to Sulphur Ointment, as it does not irritate the skin. It destroys Pediculi of all kinds in one application. A small quantity of a strong solution of the Acid well rubbed into the hair, and after a quarter of an hour washed out again with soap and water, will kill every insect.

733. In Lupus, the solution of the Acid in Glycerine has been successfully employed by Mr. De Morgan. Dr. Whitehead treats the same disease with Carbolic Acid Ointment 3ss. - j.). Mr. O. Clayton has found benefit from the use of the aqueous solution in Lepra, Tinea Capitis, Rupia, &c.