Index

Chemical Method

Mineral Grade

Appearance 

White Powder

White Powder

Mg(OH)₂, %

≥98

≥90

SiO₂%

----

≤1.6

CaO%

≤0.1

≤1.0

Fe₂O₃%

≤0.01

≤0.50

Whiteness %

≥95

≥88

Acid-insoluble substance

≤0.05

-----

Cl^-

≤0.6

-----

Fe³⁺

≤0.005

-----

Loss On Ignition %

≥30.50

30±2