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| Calcium oxide is an inorganic compound with the chemical formula CaO, commonly known as quicklime. The physical properties are a white powder on the surface, with impurities appearing as grayish white, and impurities appearing as light yellow or gray. It has hygroscopicity. Calcium oxide is an alkaline oxide that is sensitive to moisture. Easy to absorb carbon dioxide and moisture from the air. Reacts with water to produce calcium hydroxide (Ca (OH) 2) and generates a large amount of heat, which is corrosive. | |||||||||
1305-78-8
bosschem
1305-78-8
| Calcium oxide Basic information | |
| Product Name: | Calcium oxide |
| CAS: | 1305-78-8 |
| MF: | CaO |
| MW: | 56.08 |
| EINECS: | 215-138-9 |
| Mol File: | 1305-78-8.mol |
| 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 |
| Thermal Conductivity | 0.318 W/(m·K) |
| Specific Heat Capacity | Cp(crystal): 0.75 J/(g·K), at 25℃ |
| Crystal Structure | Cubic |
| Sensitive | Air & Moisture Sensitive |
| Merck | 141,686 |
| crystal system | Cube |
| Space group | Fm3m |
| Dielectric constant | 2.2（Ambient） |
| Exposure limits | ACGIH:TLV-TWA 2 mg/m3 |
| Cosmetics Ingredients Functions | BUFFERING |
| InChI | 1S/Ca.O |
| InChIKey | ODINCKMPIJJUCX-UHFFFAOYSA-N |
| SMILES | O=[Ca] |
| 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) |
Specifications :
item | value |
Calcium oxide(CaO)%≥ | 95 |
Loss on ignition %≤ | 4 |
Magnesium oxide (MgO)%≤ | 1 |
Insoluble matter in HCl %≤ | 0.8 |
carbon dioxide(CO2)%≤ | 3 |
Fe% ≤ | 0.05 |
Fineness (600 mesh )%≤ | 0.3 |
