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Calcium fluoride

CAS:
7789-75-5
MF:
CaF2
MW:
78.07

Properties

Melting point:
1402 °C
Boiling point:
2500 °C(lit.)
Density 
3.18 g/mL at 25 °C(lit.)
refractive index 
1.434
Flash point:
2500°C
storage temp. 
-20°C
solubility 
Slightly soluble in acid; insoluble in acetone.
form 
rod
color 
white
Specific Gravity
3.18
Water Solubility 
INSOLUBLE
Sensitive 
Hygroscopic
Merck 
14,1667
Solubility Product Constant (Ksp)
pKsp: 8.28
Stability:
Stable. Incompatible with acids.
InChIKey
WUKWITHWXAAZEY-UHFFFAOYSA-L

Safety Information

Symbol(GHS) 

GHS07
Hazard statements 
H303-H315-H319-H335
Precautionary statements 
P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38
Safety Statements 
26-37/39-36
RIDADR 
3288
WGK Germany 
1
RTECS 
EW1760000
Hazard Note 
Irritant
TSCA 
Yes
HS Code 
28261900
Toxicity
LD50 i.p. in mice: 2638.27 mg/kg (Stratmann)

Use

中国福彩网论坛 www.hoaemj.tw Calcium fluoride is the main ingredient of fluorspar or fluorite, the chemical formula is CaF2, it is colorless cubic crystal or white powder. The relative density is 3.18, the melting point is 1423℃, boiling point is about 2500 ℃. The solubility in water is minimal , 100g water can dissolve only 0.0016g at 18 ℃, it is insoluble in acetone, but soluble in hydrochloric acid, hydrofluoric acid, sulfuric acid, nitric acid and ammonium salt solution, and it can not react with dilute acid, but can react with hot concentrated sulfuric acid and generate hydrofluoric acid, it can form a complex when dissolves in aluminum and iron salts (Fe3 +) solution. Natural calcium fluoride is mineral fluorite or fluorspar, often shows gray, yellow, green, purple and other colors, sometimes it is colorless, transparent, shiny glass, brittle, and the relative density is 3.01~3.25, it has significant phenomenon of fluorescence. It can be used as the source of fluorine and the material to make hydrofluoric acid system, fluoride; and it can also be used in terms of the manufacture of glass, enamel, glaze. Fluorite is mainly used as a flux in metallurgy, the very pure fluorspar can be used to make specialty lenses. Water when contains (1~1.5) × 10-6 calcium fluoride can prevent dental problems. In addition, it can be used in smelting iron and steel, chemicals, glass, ceramics manufacturing. Pure product can be used for catalyst of dehydration, dehydrogenation. By the effect of soluble calcium salts (calcium carbonate or calcium hydroxide) and sodium fluoride or hydrofluoric acid, ammonium fluoride, calcium fluoride can be obtained.

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Calcium fluoride Related Search:

Calcium fluorideAluminum fluorideCalcium chlorideCALCIUMFluorineCALCIUM HYDRIDECalcium carbonatesodium fluorideCalcium PropionateSilicic acid, calcium saltCalcium gluconateCalcium nitrateCalcium carbide
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