... .Packing & Storing:Packed in net 25kg packing. Stored in a cool, dry and well-ventilated area. The storage period ... is 1 year. Usage:2-Acrylamido-2-Methylpropane Sulfonic Acid ( ... chemistry, water-treatment, synthetic fiber, dyeing, plastic, absorbent coating, paper-making, biomedicine, magnetic material and cosmetics etc. Paper Making Chemical (AMPS)