... crystalline, particle or powder,Without odour. Astringent taste. In the dry air weathering, 280 °C lost all gesso ... , 500 °C above decomposition. 1 g soluble in 0.6 ml water, 2.5 ml glycerin, ... not soluble in alcohol. To become acidic aqueous solution litmus, pH ... prevent the disease of fruit tree nursery, is also a kind of supplement crops trace elements of the commonly used ...