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Calcium oxide Structure

Calcium oxide

Chemical Properties

Melting point 2570 °C
Boiling point 2850 °C (lit.)
Density  3.3 g/mL at 25 °C (lit.)
refractive index  1.83
Flash point 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)
Water Solubility  REACTS
Sensitive  Air & Moisture Sensitive
Merck  14,1686
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)
FDA 21 CFR 184.1210; 582.1210; 582.5210; 101.30; 182.20; 582.20
Substances Added to Food (formerly EAFUS) CALCIUM OXIDE
SCOGS (Select Committee on GRAS Substances) Calcium oxide
EWG's Food Scores 1
NIST Chemistry Reference Calcium monoxide(1305-78-8)
EPA Substance Registry System Calcium oxide (1305-78-8)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H315-H318-H335
Precautionary statements P280-P302+P352-P305+P351+P338+P310
Hazard Codes  C,Xi
Risk Statements  34-41-37/38
Safety Statements  26-36/37/39-45-25-39
RIDADR  1910
WGK Germany  1
RTECS  EW3100000
10-21-34
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  28259019
Hazardous Substances Data 1305-78-8(Hazardous Substances Data)
IDLA 25 mg/m3
NFPA 704:
0
3 1

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Calcium oxide Chemical Properties,Usage,Production

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