| 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) | - | 7.0 ~ 9.0 | |
| Average particle size | μm | 20 ~ 90 | |
