白色到灰蓝色粉末。本产品纯度高、粒径小、分布均匀、比表面积大、高表面活性、松装密度低，良好的注射成形性能；用于复合材料，与半导体硅匹配性好、界面相容性好，可提高复合材料的机械性能和导热介电性能。
熔点：＞2200℃
密度:3.26

N >33.0%， D50/2.0：

颜 色                                  浅灰至白色
体积密度                               3.26 g/cm3
分解温度                               2450℃
晶 型                                  六方
N                                      >33.0%  
O                                      <1.2% 
C                                      <0.05% 
Fe                                      < 1.0% 
Si                                      < 500 ppm 
Ca                                      <100 ppm 
热导率(烧结后)                          120 -220 W/m.K
介电常数                                8.0 - 9.0
颗粒尺寸(um)                            D50/2.0

N >32.5 % ，D97/5.0：

颜 色                                   浅灰至白色
体积密度                                3.26 g/cm3
分解温度                                2450℃
晶 型                                   六方
N                                       >32.5 % 
O                                       <1.5 %
C                                       <0.05 %
Fe                                      <1.0%
Si                                      < 500 ppm
Ca                                      <100 ppm 
热导率(烧结后)                          120 – 220 W/m.K
介电常数                                8.0 - 9.0
颗粒尺寸(um)                            D97/5.0


纳米级：

平均粒径particle size                   50 nm
纯度Purity                              ≥99.0%  
晶型phase                               立方结构
颜色Color                               灰白色
总氧含量O                               0.8%
比表面积Specific surface area           105m2/g
松装密度apparent density                0.05 g/cm3
金属杂质metallic impurities:            < 0.01%

WGK Germany  3
HazardClass  4.1 
PackingGroup  II 
危险品标志  Xi 
危险类别码  36/37/38 
安全说明  26-37/39 
危险品运输编号  UN3178 

是良好的耐热冲击材料，是熔铸纯铁、铝或铝合金理想的坩埚材料
密封保存