... high quality,best services Calcium aluminate1. Descriptionamorphous calcium aluminate, non crystalline calcium aluminate, non crystallized calcium aluminate, amorphous C12A7, ACA, concrete accelerator, CAS No ... , concrete ground hardening and rapid setting etc.CAS No. 12042-68-12. Specification(CaO 42 min)( ... Fe 2 O 3 ) % ≤0.51.5 High quality and good features of Calcium aluminate for water treatment