Boron, 99.67%, Certified® Trace 5g

CERTIFICATE OF ANALYSIS

• Cat 2311512-CT2N67   5 GM   Lot AA-11337-B13M02
• Certified® Trace
• 99.67% 
• CAS 7440-42-8

• Appearance black crystalline powder
• Assay (metal basis) 99.67%
• Boiling point 2550°C
• Cobalt (Co) <10ppm
• Copper (Cu) <1ppm
• Density 2.34
• Identification (ICP) confirms boron component
• Magnesium (Mg) <1ppm
• Melting point 2079°C  
• Molecular formula B  
• Molecular weight 10.81  
• Particle size 200 mesh
• Silicon (Si) 5ppm
• Solubility in boiling nitric acid, sulfuric acid, insoluble in water
• Retest 12/2026