alum

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alum

 [al´um]
a local astringent and styptic, prepared as an ammonium (ammonium a.) or potassium (potassium a.) compound; also used as an adjuvant in adsorbed vaccines and toxoids.

al·um

(al'ŭm),
A double sulfate of aluminum and of an alkaline earth element or ammonium; chemically, an alum is any one of the markedly astringent double salts formed by a combination of a sulfate of aluminum, iron, manganese, chromium, or gallium with a sulfate of lithium, sodium, potassium, ammonium, cesium, or rubidium; used locally as a styptic.
[L. alumen]

alum

/al·um/ (al´um)
1. a local astringent and styptic, prepared as an ammonium (ammonium a.) or potassium (potassium a.) compound; also used as an adjuvant in adsorbed vaccines and toxoids.
2. any member of a class of double sulfates formed on this type.

alum

(ăl′əm)
n.
Any of various double sulfates of a trivalent metal such as aluminum, chromium, or iron and a univalent metal such as potassium or sodium, especially hydrous aluminum potassium sulfate, AlK(SO4)2·12H2O, widely used in industry as clarifiers, hardeners, and purifiers and medicinally as topical astringents and styptics.

alum

[al′əm]
Etymology: L, alumen
a topical astringent, used primarily in lotions and douches.

al·um

(al'ŭm)
Agent used locally as a styptic.
[L. alumen]

alum

any of several substances, including potassium alum, aluminum alum, ammonium alum, potash alum and aluminum potassium sulfate, with strong astringent properties. May be used as a styptic or hemostatic and as a topical antimycotic agent. It also may be given by mouth to induce vomiting. Large doses may cause gastrointestinal disturbances.
References in periodicals archive ?
If you're concerned about the moisture-blocking chemicals in antiperspirants, then try crystal deodorants - basically a lump of mineral salts which you activate by wetting, then gliding on to the skin.
Last year's introduction of crystal deodorants with essential oils boosted the sales and more launches are on the way.
has reaped the benefits of being one of the first companies to bring crystal deodorants, originally a department store and specialty store item, to the mass market.
Deodorant Stones of America also manufactures a line of natural crystal deodorant products.
Smelling sweet: Crystal deodorants are the alternative to harsh aerosols.
Alvin Connor, based in Speke, specialises in supplying natural crystal deodorants and other bodycare products.
a supplier of hypoallergenic, fragrance-free crystal deodorants made of pure, natural mineral salts and free of processed aluminum compounds, which some consumers and doctors suspect are a health risk.
Rather than masking odor as other deodorants do, TCCD's Naturally Fresh crystal deodorants actually kill odor-causing bacteria for 24 hours at a time.
The DSA line of crystal deodorants consists of six different products - among them, Thai deodorant stones, Pure & Natural and Jock's Rocks.