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Meanings of potash alum in английском
португальский
pedra-ume A white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum.
Usage of potash alum in английском
1
The presence of sulphuric acid in potash alum was known to the alchemists.
2
Potash alum is the common alum of commerce, although both soda alum and ammonium alum are manufactured.
3
Potash alum is obtained tolerably pure in commerce in colorless transparent crystalline masses, having an acid, sweetish, astringent taste.
4
Potash alum, K2SO4.Al2(SO4)3.24H2O, crystallizes in regular