... and is of weak acidity, easily soluble in alkali. Humic acid powder comprises hydroxyl, carboxylic, phenolic hydroxyl, active groups. Usage1) ... additive, wastewater treatment agent, cathodal plate additive for accumulator. StorageHumic acid powder should be kept in sealed, dry and ventilated place ... )≥70%Mositure≤20%PH5.0-6.0Packing25 KG or 50 KG net woven bag; according to customers' requirement Humic ...