DESCRIPTION: Dankish white powder ,clean, insoluble in water, soluble in mineral acids.
DESCRIPTION: Dankish white powder ,clean, insoluble in water, soluble in mineral acids.
形状颜色特征：湿的白色粉末，产品洁净，可溶于酸，不溶于水。
DESCRIPTION: Dankish white powder ,clean, insoluble in water, soluble in mineral acids.
形状颜色特征：湿的白色粉末，产品洁净，可溶于酸，不溶于水。