It is white powder crystal can make baking food such as bread,biscuit etc. Vacueletion rapidly, rapidly, and used in chemical meterials such as polyecryimide zirconium-carbonate and maagnrtic, used producing electronics comperents can obtain the higher quality. Package: 25kgs per bagItamsIndexesResultTotal alkali NH4HCO3 wt%99.2-101.099.5Chloride CI wt%≤0.0070.003Sulphide S wt%≤0.00020.0002Sulphate SO4 wt%≤0.0070.005Ash wt%≤0.0080.005Fe wt%≤0.0020.001As wt%≤0.00020.0001Heavy metals Pb wt%≤0.00050.0002