| ITEMS | UNIT | SPECIFICATIONS | |
| Description | - | White, odorless granule | |
| Impurity | (1) Lead | ppm | Not detected |
| (2) Arsenic | ppm | Not detected | |
| (3) Mercury | ppm | Not detected | |
| (4) Antimony | ppm | Not detected | |
| (5) Cadmium | ppm | Not detected | |
| Loss on drying | % | < 10 | |
| pH (10% solution) | - | 8.0 ~ 10.0 | |
| Average particle size | μm | 212 ~ 425 , > 90% | |
