Polarised LM of crystals of oxalic acid

Polarised LM of crystals of oxalic acid

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Credit: JOHN HENDRY/SCIENCE PHOTO LIBRARY.

Caption: Polarised light micrograph of crystals of oxalic acid, magnification: X 12.5 at 35mm size. Oxalic acid may be obtained from natural products such as wood sorrel and other members of the oxalis family, as potassium hydrogen oxalate: also, certain species of eucalyptus contain up to 20% calcium oxalate in their cells and cell walls. Oxalic acid ( a white, crystalline solid) is used in: (1) the preparation of esters and oxalates, (2) the purification of glycerol and stearates, (3) bleaching straw,(4) in inks and in rust removers, (5) in leather & textile industries, & (6) in dye manufacture.

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Keywords: chemical, chemistry, compound, compounds, crystal, crystals, light micrograph, lm, oxalic acid

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