trichloroisocyanuric acid, tcca, long last stablized chlorine solid powder,granular or tablet treat swimming pool water. trichloroisocyanuric acidtccaS P E C F I ... C A T I O NProduct Name: Trichloroisocyanuric Acid 90%Aspect SpecficationAppearance White ... size have: 20g, 50g,100g,200g,250g,500g & 600g. Trichloroisocyanuric acid