≤0.4% water soluble substances

≤0.02% insol. dil. HCl

≤0.02% NH4OH pptd.

nitrate (NO3-): ≤0.005%

chloride (Cl-): ≤0.01%

SO42- and SO32-: ≤0.02%

Ba: ≤0.005%

Sr: ≤0.005%

Ca: ≤0.05%

Fe: ≤0.01%

Na: ≤0.5%

K: ≤0.005%

Mn: ≤5 ppm

heavy metals (as Pb): ≤0.003%

ACS reagent

MgO

98%

≤2.0% loss on ignition

Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

OM3850000

1

2852 °C(lit.)