Item

Value

Molecular formula (general)

xMgCO₃·yMg(OH)₂·zH₂O

CAS No. (US FDA designation)

39409-82-0

MgO content

42.4 mass%

Loss on ignition (LOI)

57.0 mass%

Whiteness

97.3

Fe₂O₃ content

0.0061 mass%

Cl⁻ content

0.0958 mass% (< 0.1%)

CaO content

0.318 mass%

SiO₂ content

0.0127 mass%

Na₂O content

0.0663 mass%

SO₃ content

0.0526 mass%

SrO content

0.0061 mass%

Heavy metals

Not detected above limits in test report

Appearance / structure

White fluffy powder, plate-like (lamellar) crystal, mildly alkaline, slightly soluble in water (~0.02% at 15 °C)

Relative density

Approx. 2.16

Thermal decomposition

Endothermic decomposition above ~350 °C into MgO + CO₂