Item Appearance Water Heavy metals Loss on drying Insoluble matter Assay Free Alkali Specification White crystralline powder 0.3%max 30ppm max 0.2%max 0.05%max 99.0%min 0.2%min Packing:25kgs/drum Payment terms:T/T Delivery time: in 20 days after receiving payment If you are interested in it,pls feel free to contact me at any time. Await our mutual business.