Formula: H3BO3 Formula Weight: 61.83 CAS No.: 10043-35-3 Purity: ≥99.5% Legal Information: ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC Packaging: 1, 2.5 kg in poly bottle Packaging: 5, 10 kg in poly drum Packaging: 500 g in poly bottle