1.02067

Calcium carbonate

precipitated for analysis of silicates EMSURE^®

• Linear Formula: CaCO₃
• CAS Number: 471-34-1
• Molecular Weight: 100.09
• Beilstein: 8008338
• MDL number: MFCD00010906
• EC Index Number: 207-439-9

Properties

• Quality Level: 300
• product line: EMSURE^®
• assay: ≥99.0% (complexometric)
• form: solid
• potency: 6450 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rat)
• impurities: ≤0.005% Substances insoluble in hydrochloric acid
• pH: 9.5-10.5 (20 °C, 100 g/L in H₂O, slurry)
• mp: 825 °C (decomposition)
• solubility: 0.017 g/L
• density: 2.93 g/mL at 25 °C (lit.)
• bulk density: 300‑1400 kg/m³
• anion traces: chloride (Cl^-): ≤0.02%; sulfate (SO₄^2-): ≤0.01%
• cation traces: Ba: ≤0.02%; Fe: ≤0.001%; K: ≤0.002%; Mg: ≤0.02%; N: ≤0.01%; Na: ≤0.005%; Sr: ≤0.02%; heavy metals (as Pb): ≤0.001%
• storage temp.: 10-30°C
• SMILES string: [Ca++].[O-]C([O-])=O
• InChI: 1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• InChI key: VTYYLEPIZMXCLO-UHFFFAOYSA-L

Description

Analysis Note

Assay (complexometric): ≥ 99.0 %
Substances insoluble in hydrochloric acid: ≤ 0.005 %
Chloride (Cl): ≤ 0.02 %
Sulfate (SO₄): ≤ 0.01 %
Total nitrogen (N): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.001 %
Ba (Barium): ≤ 0.02 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.002 %
Mg (Magnesium): ≤ 0.02 %
Na (Sodium): ≤ 0.005 %
Sr (Strontium): ≤ 0.02 %

Legal Information

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

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable