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| Molecular weight 分子量 | 78 | Mohs hardness 摩氏硬度 | 3 |
| Density g/cm3 密度 | 2.4 | Ratio of refraction 折光率 | 1.58 |
| Item/Model | HJM-7 | HJM-8 | HJM-20 | HJM-8G | HJM-10G | HJM-10K | HJM-20K | |
| Chemical constituent 化学成分 | Al(OH)3 [%] ≥ | 99.5 | 99.5 | 99.5 | 99.5 | 99.5 | 99.5 | 99.5 |
| Al2O3 [%] ≥ | 64.5 | 64.5 | 64.5 | 64.5 | 64.5 | 64.5 | 64.5 | |
| SiO2 [%] ≤ | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | |
| Fe2O3 [%] ≤ | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | |
| Na2O [%] ≤ | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | |
| Loss on ignition 灼减 ≤ | 35.0 | 35.0 | 35.0 | 35.0 | 35.0 | 35.0 | 35.0 | |
| Attached water水分 ≤ | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | |
| +325 mesh 325目筛上 ≤ | 0.01 | 0.01 | 25 | 0.01 | 0.1 | 0.1 | 25 | |
| oil absorption 吸油率 ≈ | 27 | 26 | 21 | 24 | 24 | 27 | 22 | |
| Mean particle diameter粒度（D50） µ m≈ | 7 | 9 | 20 | 8 | 10 | 10 | 20 | |
| Whiteness白度 [R457] ≥ | 95 | 94 | 91 | 97 | 97 | 92 | 87 | |
| PH value PH值 ≈ | 9 | |||||||
