Formula: AlCl3 Formula Weight: 133.34 CAS No.: 7446-70-0 Purity: ≥98% Features and Benefits: The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties. 1 Aluminum nitride can be synthesized from the elemnts with AlCl 3 added to help facilitate crystallization. 2 Caution: Caution when opening! Due to production the supernatant gas phase can contain small amounts of toxic phosgene.