Poly-Aluminium Chloride £¨PAC£© Spec: Alumina (Al2O3): 29.0¡À1 % Min Salt radical degree:40-90 % Max Water insolvent: 0.6 % Max PH value (1%solution): 3.5-5.0 N:0.01%Max AS: 0.0002 % Max Cr6+ :0.0005 %Max Hg:0.00001 % Max Pb:0.001 %Max Cd: 0.0002 % Max Appearance: white powder