1.02109

Calcium oxide from marble

small lumps ~3-20 mm

• Synonym(s): Calcium oxide from marble, Lime, caustic, Quicklime
• Empirical Formula (Hill Notation): CaO
• CAS Number: 1305-78-8
• Molecular Weight: 56.08
• MDL number: MFCD00010911
• UNSPSC Code: 12352303
• EC Index Number: 215-138-9
• NACRES: NB.21

Properties

• Quality Level: 200
• Assay: ≥95.0% (complexometric)
• form: solid
• impurities: ≤0.1% Substances insoluble in hydrochloric acid
• pH: 12.6 (20 °C in H₂O, saturated solution)
• bp: 2850 °C/100 mbar
• mp: 2580 °C
• density: 3.37 g/cm³ at 20 °C
• bulk density: 800‑1200 kg/m³
• anion traces: chloride (Cl^-): ≤500 ppm; sulfate (SO₄^2-): ≤5000 ppm
• cation traces: heavy metals (as Pb): ≤50 ppm
• storage temp.: no temp limit
• InChI: 1S/Ca.O
• InChI key: ODINCKMPIJJUCX-UHFFFAOYSA-N

Description

Analysis Note

Assay (complexometric): ≥ 95.0 %
Substances insoluble in hydrochloric acid: ≤ 0.1 %
Chloride (Cl): ≤ 500 ppm
Sulfate (SO₄): ≤ 5000 ppm
Heavy metals (as Pb): ≤ 50 ppm

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H315 - H318 - H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable