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potash alum
[ pot-ash al-uhm ]
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Word History and Origins
Origin of potash alum1
First recorded in 1830–40
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Example Sentences
It is quite a matter of indifference to the photographer whether he uses potash alum or ammonia alum.
From Project Gutenberg
The rule indicates, also, that aluminium chloride would be better than the sulphate or than potash alum.
From Project Gutenberg
Common alum is strictly potash alum; other two varieties are soda alum and ammonia alum, both similar in properties.
From Project Gutenberg
This was the common potash alum and uncombined with any carbonated alkali, and it passed into the stomach unchanged.
From Project Gutenberg
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