Ming Fan
KAl(SO₄)₂·12H₂O
☯ TCM Properties
Kills Parasites and Resolves Toxicity; Dries Dampness and Stops Itching; Stops Bleeding; Stops Diarrhea; Dispels Wind-Phlegm; Absorbs Dampness and Heals Sores
Botanical Description
Ming Fan is potassium aluminum sulfate dodecahydrate, KAl(SO4)2·12H2O, commonly called potash alum or simply alum. It occurs as a colorless to white, transparent, octahedral crystalline mineral salt, obtained either by purification of the natural mineral alunite or by recrystallization from solutions of aluminum sulfate and potassium sulfate. The crystals are odorless, with a strongly astringent puckering taste, soluble in water giving an acidic solution. For pharmaceutical use the crystals are crushed, and a calcined form (Ku Fan, 'burnt alum') is prepared by gentle heating until the water of crystallization is driven off, leaving a porous white powder of anhydrous aluminum-potassium sulfate. In traditional Chinese medicine, Ming Fan is sour, astringent, and cold with slight toxicity, entering the lung, liver, spleen, and large intestine channels; it dries damp, kills parasites, stops bleeding and chronic diarrhea, transforms phlegm, and resolves toxicity, used externally for skin lesions, scabies, and eczema, and internally for chronic diarrhea, prolapse, hemoptysis, and epilepsy from phlegm.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| poultice | As needed | Daily | — | — | — |
Cultural & Historical Context
Traditional Chinese Uses
Ming Fan (alum, potassium aluminum sulfate) is a cold, astringent mineral substance used in Chinese medicine primarily as an external treatment for skin conditions, oral sores, hemorrhoids, and vaginal infections. Internally, in small doses, it clears Phlegm-Heat from the Lungs and Stomach, treats jaundice from Damp-Heat, and stops bleeding from Blood Heat. Its powerful drying and astringent properties make it effective for conditions involving excessive moisture, discharge, or weeping of body surfaces.
Traditional American Uses
None Documented
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.