Synthetic Cryolite White or Gray sandy,powder,granular Cas No.:13775-53- ... .05g/cm3 Use:aluminium metallurgy (1)Product Name: Synthetic Cryolite(2)Molecular Formula: Na3AlF6(3)UseAluminium Metallurgy: as component of fluxing agents, protective ... bags with shrink film,or according to customer's requirements. Synthetic Cryolite