This carboxylic acid derivative, also known as 1,1-dicarboxylic acid cyclobutane, presents as a white crystalline powder. Store in a cool and dark place, ideally at ambient temperatures. 1,1-Cyclobutanedicarboxylic Acid is incompatible with oxidizing agents and should not be stored or handled in their vicinity. This chemical may be corrosive to metals and causes severe skin burns and eye damage.