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Unformatted text preview: filtration phase. About 50% was unfortunately lost by the spill. This is clearly one major factor which contributed to the low % yield. The accident also eliminated the ability of identifying other sources of error. Another reason for lower yiled could be associated with vacuum filtration where we noticed there was loss of pure crystal phthalic acid in the solution after repeating. The filter cake was also not big enoght since crystal was lost on the edge of the filter cake....
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- Spring '10
- Chemistry, phthalic acid, fil ter cake