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1.05866

Magnesium oxide

for analysis (max.0.001% SO4) EMSURE® ACS

Synonym(s):

Magnesium oxide, Magnesia usta

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About This Item

Empirical Formula (Hill Notation):
MgO
CAS Number:
1309-48-4
Molecular Weight:
40.30
UNSPSC Code:
12352303
EC Index Number:
215-171-9
NACRES:
NA.21
MDL number:
MFCD00011109
Assay:
≥97% (complexometric)
Grade:
ACS reagent
Form:
solid
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grade

ACS reagent

Quality Level

300

product line

EMSURE®

assay

≥97% (complexometric)

form

solid

impurities

≤0.02% Substances insoluble in hydrochloric acid, ≤0.02% Substances precipitated by ammonia, ≤0.4% Substances soluble in water

loss

≤2% loss on ignition, 1000 °C

pH

10.3 (20 °C in H2O, saturated solution)

bp

3600 °C/1000 hPa

mp

2800 °C

density

3.58 g/cm3 at 25 °C

bulk density

100 kg/m3

anion traces

carbonate (CO32-): ≤1.5%, chloride (Cl-): ≤0.01%, nitrate (NO3-): ≤0.005%, sulfate (SO42-): ≤0.001%, sulfate, sulfite (as SO42-): ≤0.02%

cation traces

As: ≤0.0001%, Ba + Sr (as Ba): ≤0.005%, Ca: ≤0.05%, Cu: ≤0.001%, Fe: ≤0.005%, K: ≤0.005%, Mn: ≤0.0005%, N: ≤0.002%, Na: ≤0.25%, Pb: ≤0.001%, Zn: ≤0.0005%, heavy metals (as Pb): ≤0.003%

storage temp.

no temp limit

SMILES string

[Mg]=O

InChI

1S/Mg.O

InChI key

CPLXHLVBOLITMK-UHFFFAOYSA-N

Analysis Note

Identity: passes test
Assay (complexometric): ≥ 97 %
Appearance of solution: passes test
Substances soluble in water: ≤ 0.4 %
Substances insoluble in hydrochloric acid: ≤ 0.02 %
Substances precipitated by ammonia: ≤ 0.02 %
Carbonate (as CO₂): ≤ 1.5 %
Chloride (Cl): ≤ 0.01 %
Nitrate (NO₃): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.001 %
Sulfate and sulphite (as SO₄): ≤ 0.02 %
Total nitrogen (N): ≤ 0.002 %
Heavy metals (as Pb): ≤ 0.003 %
As (Arsenic): ≤ 0.0001 %
Ca (Calcium): ≤ 0.05 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.005 %
K (Potassium): ≤ 0.005 %
Mn (Manganese): ≤ 0.0005 %
Na (Sodium): ≤ 0.25 %
Pb (Lead): ≤ 0.001 %
Zn (Zinc): ≤ 0.0005 %
Barium and Strontium (as Ba): ≤ 0.005 %
Loss on ignition (1000 °C): ≤ 2.0 %
Conforms to ACS

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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