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Certificate of Analysis
Product Name: Magnesium carbonate Catalogue Number: GR-11029-900
Batch Size: 2KG Lot Number: 20250305
CAS Number: 546-93-0 Production Date:
Molecular Formula: CMgO3 Report Date: 2025-03-03
Molecular Weight: 84.31 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance White powder Conforms
MgCO3 content 90.0%-100.0% 90.1%
Sieving residue >44 micron ≤0.01% Conforms
Particle Size distribution (d50) 2.0 μm~5.0 μm 4.41 μm
Bulk density(g/cc) 0.75-1.3 1.07
Moisture content ≤1.0% 0.25
Surface area(m2/g) 3.5.00-8.0 4.02
pH 8.0~9.0 Conforms
Chloirde ≤0.05% 0.025%
Sulphate ≤0.05% 0.01%
Pb ≤100 ppm Conforms
Cd ≤100 ppm Conforms
Hg ≤100 ppm Conforms
As ≤100 ppm Conforms
Fe ≤2.0% 1.2%
Si ≤0.5% 0.08%
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Date: Date: Date:
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