Oxalic acid: CAS No. : 6153-56-6 EINECS No. : 205-634-3 MF : C2H6O6 Purity : ≥99% Appearance : White crystalline small particles or powder Nature : 1, colorless transparent crystal or powder. 2, soluble in ethanol. Dissolved in water. Micro-soluble ether. Do not dissolve in benzene and chloroform. Soluble in water 100mL 4900g (25 ° C), the highest concentration of 98%. 3, oxalic acid began to sublimate at 100 ºC, 125 ºC rapid sublimation, 157 ºC when a large number of sublimation, and began to break down.