Items |
Standards |
Color |
White |
Appearance |
Powder |
CaSO4 % |
≥ 98.0 |
Pb (mg/kg) |
≤ 2.0 |
As (mg/kg) |
≤ 2.0 |
F % |
≤ 0.003 |
Se % |
≤ 0.003 |
250 ºC water lose % |
19.0 ~ 23.0 |