Magnesium oxide

CAS number:1309-48-4

Molecular formula:MgO

molecular weight:40.3

Chemical structure:

Product name Magnesium Oxide
Shelf Life 2 Years
Test Item Specified Value Test Result
Appearance Fine, White powder Positive
Identification Reaction of magnesium
 Content (%)  calculated as MgO 96.0 - 100.5 98.24
Appearance of Solution ≤ B3 Positive 
Solubility Water insoluble, dissolve in dilute acid with slight effervesce Positive 
Soluble Substances (%) ≤ 2.0 1.8
Substances insoluble in acid (%) ≤ 0.1 0.1
Calcium (%) ≤ 1.1 0.1
Iron (%)  0.05 ≤ 0.05
Heavy Metals (ppm)  20  15
Particle Size D50 (μm)
Approx. 10μm
Approx. 10μm ≤ 0.35 0.31