Identifiers
CAS Number: 1305-79-9
JSmol: Interactive image
ChEBI: CHEBI:48233
ChemSpider: 14096
ECHA InfoCard: 100.013.764
E number: (glazing agents, …)
PubChem: 14779
RTECS number: EW3865000
UNII: 7FRO2ENO91
Properties
Chemical formula: CaO
Molar mass: 72.0768 g/mol
Appearance: white or yellowish powder
Odor: odorless
Density: 2.91 g/cm
Melting point: ~ 355 °C (671 °F; 628 K) (decomposes)
Solubility in water: decomposes
K: 12.5
Magnetic susceptibility: -23.8·10 cm/mol−63
Refractive index: 1.895
Structure
Crystal structure: Orthorhombic
Space group: Pna2
Coordination geometry: 8
Hazards
LD
median dose: >5000 mg/kg (oral, rat)
>10000 mg/kg (dermal, rat)
Related compounds
anions: Calcium oxide
cations: Strontium peroxide
Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).