Substances & Homeopatic Remedies


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    Etymology: Gk, pyr, fire, genein, to produce. any substance or agent that tends to cause a rise in body temperature, such as some bacterial toxins


    Traditional name

    German: Phenazon
    English: Phenazone (Phenyl-dimethyl-pyrazolon)
    Coal-tar derivative
    A product of coal tar through toluin.

    Used parts

    Colourless, odourless, soluble crystals or white crystalline powder
    Solution and trituration.


    C11 H12 N20
    Syn.: C2H6-NC3HON-C6H5
    Minerals; Organic Compounds; Acyclic Carbon Compounds; Oils and similar Compounds of Carbon



    Original proving

    Information on poisonings
    (Hughes' Cyclopedia-RW)

    Description of the substance

    Source and Composition. Antipyrin is a synthetical base, which forms salts analogous to those of Ammonium, and is a product of the destructive distillation of coal tar, though it may also be prepared synthetically. It has the formula C20H18N4O2—and the chemical name Dimethlyphenyl-pyrazolon. In the British pharmacopoeia it has the title Phenazone.

    Characteristics. It occurs as a whitish, crystalline powder, which combines with acids to form salts, is somewhat bitter, and soluble in one-half its weight of hot water, and in its own weight of cold water; but is still more so if the water is acidulated with dilute nitro-hydrochloric acid. It is less soluble in alcohol, chloroform or ether, gives an intensely red color with Ferric Chloride, and a beautiful green with Nitric Acid. It is not irritant to either the stomach or the tissues, and may be administered hypodermically.