为白色吸水性粉末或结晶，有轻微的甲酸气味。作为具有自行降解能力的高比重溶液，广泛用于环保型无固相钻井液、完井液的配制。
       It is a white water-absorbing powder or crystals. It has a slight odor of formic acid. As a self-degradation solution, it is widely used in environmental-protection solid-free drilling fluid, completion fluid.