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Physical & Chemical properties

Dissociation constant

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At pH 1 conditions, less than <1% 1.4-benzene dicarboxylic acid is ionized calculated according to the equation of Henderson-Hasselbalch.

The diamines, 1.6-hexane-diamine and 1.4-butane diamine will be 100% ionized at pH 1 and present as the cations 1, 4- butanediammonium, and 1,6-hexanediammonium.

At pH 4 and 5 conditions, the 1.4-benzene dicarboxylic acid will 100% ionized.

The diamines, 1.6-hexane-diamine and 1.4-butane diamine will be 100% ionized and present at pH 4 and 5 as the cations 1, 4- butanediammonium, and 1,6-hexanediammonium.

At pH 7 conditions, the 1.4-benzene dicarboxylic acid will be 100% ionized. The diamines, 1.6-hexane-diamine and 1.4-butane diamine will also 100% ionized.

At pH 9 and 10 conditions, the 1.4-benzene dicarboxylic acid will be 100% ionized. The diamines, 1.6-hexane-diamine and 1.4-butane diamine will also 100% ionized.

According to the calculations, only at pH 13 and higher the diamines, 1.6-hexane-diamine and 1.4-butane diamine will less than 1% ionized

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