Solubility | Soluble in alcohol, water (1 g/3 mL; 80% w/v @ 100 °C; 40% w/v @ 45 °C), absolute ethanol (1 g/50 mL), glycerol (1 g/100 mL), or propylene glycol (1 g/20 mL); insoluble in ether, chloroform, benzene, petroleum ether, oils, fats, fat solvents. Aqueous solutions are rapidly oxidized by air; the reaction is accelerated by alkalies, iron, and copper |