Product Details
Calcium oxide(CaO, CAS No. 1305-78-8), also known as lime, quicklime, burnt lime, or calx, does not occur naturally as it reacts easily with water to produce hydrated lime and with carbon dioxide to produce limestone. It is produced by calcination of calcium carbonate raw materials like limestone or oyster shells at 1,700–2,450°C.
Calcium oxide Chemical Properties
Melting point | 2570 °C |
Boiling point | 2850 °C (lit.) |
Density | 3.3 g/mL at 25 °C (lit.) |
Bulk density | 800-1200kg/m3 |
Refractive index | 1.83 |
Fp | 2850°C |
Storage temp | no restrictions |
Solubility | 1.65g/l Risk of violent reaction |
Form | powder |
Color | White to yellow-very slightly beige |
Specific Gravity | 3.3 |
PH | 12.6 (H2O, 20℃)(saturated solution) |
Odor | wh. or gray cryst. or powd., odorless |
Water Solubility | REACTS |
Sensitive | Air & Moisture Sensitive |
Crystal Structure | Cubic |
Crystal system | Cube |
Merck | 141,686 |
Space group | Fm3m |
Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.47760.47760.47769090900.1089 |
Dielectric constant | 2.2（Ambient） |
Exposure limits | ACGIH: TWA 2 mg/m3 |
OSHA: TWA 5 mg/m3 | |
NIOSH: IDLH 25 mg/m3; TWA 2 mg/m3 | |
Stability | Stability Stable, but absorbs carbon dioxide from the air. Incompatible with water, moisture, fluorine, strong acids. |
InChIKey | ODINCKMPIJJUCX-UHFFFAOYSA-N |
CAS DataBase Reference | 1305-78-8(CAS DataBase Reference) |
NIST Chemistry Reference | Calcium monoxide(1305-78-8) |
EPA Substance Registry System | Calcium oxide (1305-78-8 |
Application
Lime finds extensive application across diverse industries including metallurgy, flue gas desulfurization, construction, mining, papermaking, and water treatment. In iron ore purification, calcium oxide serves a critical function in removing impurities via reactions with compounds including silicates, phosphates, and sulfates within the ore to generate slag.
Packing & Shipment
