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What is pyrogallol? ​
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What is pyrogallol? ​

User Makalone LOgman
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A weakly acid crystalline compound chiefly used as a developer in photography
User Tjassens
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Pyrogallol is the product of heating gallic acid, known as trihydroxybenzene with the chemical formula of C6H6O3 or C6H3(OH)3.

User Bagus Tesa
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