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Science 2 October 1964:
Vol. 146. no. 3640, pp. 53 - 55
DOI: 10.1126/science.146.3640.53
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Articles

Growth of Oxalic Acid Single Crystals from Solution: Solvent Effects on Crystal Habit

John L. Torgesen 1 and John Strassburger 1

1 Crystal Chemistry Section, National Bureau of Standards, Washington, D.C. 20234

Single crystals of oxalic acid dihydrate are difficult to grow from pure water solution, but good single crystals of the material may be obtained by growth from mixtures of acetone and water. The solvent markedly affects the crystal habit. Crystals grown in mixtures of acetone and water develop the prismatic habit, while those grown in water alone develop the tabular or equant habit. The forms {001}, {110}, and {101} predominate in all cases. Single crystals of anhydrous oxalic acid may also be grown from solution in glacial acetic acid, although specimens more than 2 centimeters in length are difficult to produce.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)