作者OasisYang (绿洲杨)
看板Chemistry
标题Re: [问题]铁铵矾 的英文?
时间Tue Dec 20 19:02:01 2005
Title: Ammonium Ferric Sulfate.
CAS Registry number: [10138-04-2]
Additional name(s): Ferric ammonium sulfate.
Molecular formula: FeH4NO8S2
Molecular weight: 266.01
Composition: Fe 20.99%, H 1.52%, N 5.27%, O 48.12%, S 24.11%.
Line formula: NH4Fe(SO4)2.
Derivative: Dodecahydrate
Additional name(s): ferric alum, iron alum.
Properties: Colorless to pale-violet, transparent, efflorescent,
octahedral crystals. Odorless; acid styptic taste.
mp =37 deg; d 1.71. Very sol in water;
practically insol in alcohol;
pH of 0.1M aq soln 2.5.
Melting point: 37
Density: 1.71
USE: As analytical reagent; mordant in dyeing and printing textiles.
THERAP CAT: Astringent, styptic.
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from MERCK index
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