Under normal circumstances, oxalic acid is absorbed from the digestion of food in the digestive tract. Pure oxalic acid cleaner as a white powder that readily dissolve in water, when drank, is absorbed in the face, the cheeks, the neck and eye orbits, causing them to swell. Oxalic Acid is often used to clean pavements and water tanks. Some throw a fist full of powder into the tank without properly flushing out.
Oxalic acid powder is poisonous.
Hyperoxaluria 320 620 800 2500 7500 (st 3250 9000 3220-6 5249-4) Hz
Oxalic acid powder ingested explains why kidney stones (very small ones) are found in the eye orbits.
kidney stones 180 700 850 5780 (st 3250 6000 1252-3 9567 1500) Hz
Good luck.