Magnesium Oxide (1309-48-4)
1. Basic Information
1. Chemical Name: Magnesium Oxide
2. Chinese Alias: 氧化镁
3. English Name: Magnesium Oxide
4. Molecular Formula: MgO
5. Molecular Weight: 40.3
6. CAS Number: 1309-48-4
7. EINECS Number: 215-171-9
8. Appearance: White powder
· Technical Parameters
High Purity Magnesium Oxide
Test Items
Standard
Content (MgO) ≥ %
98.00
CaO ≤ %
0.60
Fe2O3 ≤ %
0.10
Al2O3 ≤ %
0.10
H2O ≤ %
0.50
Insoluble matter (SiO2) ≤ %
0.05
LOI ≤ %
3.50
200 mesh sieve ≤ %
5.0
Light Magnesium Oxide
Item
Index
Class I
Class II
Premium
First Grade
Qualified
Premium
First Grade
Qualified
MgO (w/%) ≥
95.0
93.0
92.0
95.0
93.0
92.0
CaO (w/%) ≤
1.0
1.5
2.0
0.5
1.0
1.5
HCl Insoluble (w/%) ≤
0.10
0.20
—
0.15
0.20
—
Sulfates (as SO4) (w/%) ≤
0.2
0.6
—
0.5
0.8
1.0
Residue on 150μm sieve (w/%) ≤
0
0.03
0.05
0
0.05
0.10
Iron (Fe) (w/%) ≤
0.05
0.06
0.10
0.05
0.06
0.10
Manganese (Mn) (w/%) ≤
0.003
0.010
—
0.003
0.010
—
Chloride (as Cl) (w/%) ≤
0.07
0.20
0.30
0.15
0.20
0.30
Loss on Ignition (w/%) ≤
3.5
5.0
5.5
3.5
5.0
5.5
Bulk Density (g/mL) ≤
0.16
0.20
0.25
0.20
0.20
0.25
Lightly Calcined Magnesium Oxide
Grade
Chemical Composition (Mass Fraction) %
MgO ≥
SiO2 ≤
CaO ≤
Fe2O3 ≤
LOI ≤
CBM90
90.0
4.0
2.5
—
6.0
CBM85
85.0
6.0
4.0
—
8.0
(The above parameters are reference values. Please refer to the factory inspection sheet for the exact values.)
3. Packaging Specifications
1. 20/25 kg bags
2. Lightly calcined magnesium oxide in 50 kg bags, or ton packaging