See more » Beryllium carbide. Formula: BeI; Molecular weight: 135.91665; CAS Registry Number: 13597-98-3; Information on this page: Constants of diatomic molecules; References; Notes; Other data available: Gas phase thermochemistry data; Options: Switch to calorie-based units Identifiers CAS Number. : Beryllium iodide. Beryllium iodide. Beryllium iodide is the chemical compound with the formula BeI 2. • BeI2 + SrSO4 = BeSO4 + SrI2 Aqueaous beryllium iodide plus aqueous tin(iv) nitrate, to give aqueous beryllium nitrate and solid tin(iv) iodide..... i've gotten this far but i want to make sure and then balance. can you help? Structure, properties, spectra, suppliers and links for: Beryllium iodide, 7787-53-3. It is very hygroscopic and reacts violently with water, forming hydroiodic acid. Formula: BeI; Molecular weight: 135.91665; CAS Registry Number: 13597-98-3; Information on this page: Gas phase thermochemistry data; References; Notes; Other data available: Constants of diatomic molecules; Options: Switch to calorie-based units Beryllium iodide. Beryllium carbide, or Be2C, is a metal carbide. New!! Beryllium ions have a charge of 2+. Iodide ions have a charge of 1-. Beryllium iodide Names Systematic IUPAC name. Beryllium Iodide BeI2 Molar Mass, Molecular Weight. In order to form a compound with no charge, 1 Be ion must form ionic bonds with two iodide ions. Beryllium iodide General Systematic name Beryllium iodide Molecular formula Be I 2: Molar mass 262.821 g/mol Appearance colorless needle-like crystals CAS number [7787-53-3] Properties Density and phase 4.325 g/cm³, solid Solubility Reacts violently with water Slightly soluble in CS 2 Soluble in ethanol: Melting point 510°C Boiling point 590°C Beryllium is a lightweight alkaline earth metal with the atomic number 4. Beryllium iodide is an iodide of beryllium. It is a relatively rare element found naturally only combined with other elements in minerals.