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白礬 Baifan
Chinese Name |
白礬 |
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Chinese Pinyin |
Baifan |
English Name |
Alum |
Latin Pharmaceutical Name |
Alumen |
Category |
Minerals
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Origin |
A refined mineral product made from alumite, which largely consists of [KAl (SO4)2·12H2O]. |
Production Regions |
Primarily produced in the Chinese provinces of Zhejiang, Fujian, Anhui, Shanxi. |
Macroscopic Features |
Alumen belongs to trigonal system. Crystals are small and thin rhomboid or plate-shaped, usually presents as compact lumps, thin granules or earthy texture. Externally colorless, white, usually pale yellow or light red. Streaks are white. Glass-like luster; cleavage plane presents slightly pearl-like luster. Clumps present with dark luster or a slightly wax-like luster. Transparent or translucent. Fractured crystals present as shell-shaped; clumps present schistose, stagger or earthy. Hardness 3.5~4. Density 2.6~2.8. Brittle texture. |
Quality Requirements |
Superior medicinal material consists of large lumps that are colorless, translucent and free of impurities. |
Properties |
Sour, astringent; cold, toxic. |
Functions |
Externally used to resolve toxin and kills worms, and dry dampness and relieve itching. Internally used to stop bleeding, relieve diarrhea and eliminates wind-phlegm. Applied to stroke, epilepsy, pharyngitis, scabies, tinea, moisten sore, abscess, carbuncle, swollen toxin; scald due to water or fire; mouth and tongue sore; marginal blepharitis and wind sore; purulent ear; nasal polyp; pain hemorrhoid; flooding and spotting; allergic rhinitis; bleeding wound; chronic diarrhea; vaginal discharge with pudendal itch; rectal prolapse; uterine prolapse. |
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Permanent URL:https://sys01.lib.hkbu.edu.hk/cmed/mmid/detail.php?pid=B00399
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