1) Appearance : white or off-white powder
2) Water: 6.0%-15.0%
3) pH value (1% in water solution ): 5.5-7.0
4) Calcium (anhydrous basis): 11.0%-15.0%
5) Tap density: ≥0.5g/cm3
6) Heavy metals: ＜7ppm
7) Packaging: 25 or 50kg/fibre drum
8) HS code: 3907209090