... soluble in water. Uses:It's mainly used as rust-preventer,antifreezing liquid,antioxidant additive(including lubricating oil,hydraulic ... capacity of ultraviolet resistance and anstatic electricity,photographic antifogging agent,copper mine flotation,metal's slow corrosion etc. Safety ... 0.03%PH value5-6It's mainly used as rust-preventer,antifreezing liquid,antioxidant additive(including lubricating oil, ...