1.02071

Calcium carbonate

for optical glass

• Linear Formula: CaCO₃
• CAS Number: 471-34-1
• Molecular Weight: 100.09
• Beilstein/REAXYS Number: 8008338
• MDL number: MFCD00010906
• UNSPSC Code: 12352302
• EC Index Number: 207-439-9

Properties

• Quality Level: 100
• form: solid
• potency: 6450 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rat)
• particle size: 75 μm
• 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
• storage temp.: 2-30°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

General description

for optical glass

Application

Calcium carbonate for optical glass. CAS 471-34-1, chemical formula CaCO₃.

Analysis Note

Assay (complexometric)≥ 99.0 %Cr (Chromium)≤ 0.00007 %Fe (Iron)≤ 0.0007 %Particle size (< 75 µm)about 100