... represents the degree of polymerization, N means neutral degree of PAC.CAS No.: 1327-41-9EINECS No.: 215-477-2 2 ... congeal, precipitate, Reach the purification result. 3.Detailed Product Description : PAC-1 grade, Poly aluminum Chloride yellow powder, made from Ca ... .0% (max.)PH (1% water solution):3.5 ~ 5.0 PAC-2 grade, Polyaluminum Chloride yellow powder, made from Ca(AlO3 ...