| 主权项 |
1. Elemental boron with a boron content of at least 96.8% by weight, an oxygen content of at most 1.6% by weight, a nitrogen content of at most 0.2% by weight, a crystallinity of 30% by weight or less, a particle size distribution with a d100 value of 9 μm or less, and a content of at least one metallic impurity of 0.1 wt.-% to at most 1.0 wt.-%,
wherein, the at least one metallic impurity includes at least one metal of the fourth period of the Periodic Table of Elements in an amount of from 0.1 wt.-% to at most 0.2 wt.-%, wherein, potassium is present in an amount of from 0.1 wt.-% to less than 0.3 wt.-%. |
