Molar Mass Of Calcium Fluoride

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Backdrop of substance:

calcium fluoride

Group of substances:

inorganic

Physical appearance:

colorless cubic crystals

Empirical formula (Loma'due south system for organic substances):

CaF₂

Structural formula as text:

CaF2

Molar/atomic mass: 78.08

Melting signal (°C):

1400

Boiling bespeak (°C):

2500

Solubility (m/100 thousand of solvent):

acetone: insoluble [Ref.]
bromine trifluoride: 0.017 (25°C) [Ref.]
bromine trifluoride: insoluble (lxx°C) [Ref.]
dimethylformamide: 0.05 (25°C) [Ref.]
ethyl acetate: insoluble [Ref.]
hydrogen fluoride : ane.444 (-23°C) [Ref.]
hydrogen fluoride : 1.061 (-3.3°C) [Ref.]
hydrogen fluoride : 0.817 (12.2°C) [Ref.]
sulfur dioxide: 0.08 (25°C) [Ref.]
water: 0.0013 (0°C) [Ref.]
water: 0.0015 (15°C) [Ref.]
water: 0.0016 (18°C) [Ref.]
water: 0.0016 (25°C) [Ref.]
water: 0.0017 (40°C) [Ref.]

Numerical information:

Vickers hardness (GPa): i.96
Hardness on the Mohs� scale: iv

Density:

3.18 (20°C, chiliad/cmⁱⁱⁱ)

Refractive index (north_D):

1.434 (twenty°C)

Vapour pressure level (Torr):

1 (1625°C)
10 (1850°C)

Dissociation:

pK_sp (0) = 10.4 (xx°C, water)

Molar heat chapters at abiding force per unit area C_p (298.15 G, J/(mol·M)):

51 (g)

Molar enthalpy (heat) of fusion Δ_fusH (kJ/mol):

29.7

Enthalpy (oestrus) of vaporization Δ_vapH (kJ/mol):

305

Standard molar enthalpy (heat) of formation Δ_fH (298 K, kJ/mol)

-1228 (s) [Ref.]
-791,two (grand) [Ref.]

Standard tooth Gibbs energy of formation Δ_fOne thousand (298 K, kJ/mol)

-1175,6 (s) [Ref.]

Standard molar entropy S (298 1000, J/(mol·M))

68,5 (s) [Ref.]
273,8 (1000) [Ref.]

Molar heat capacity at constant pressure level C_p (298 Chiliad, J/(mol·K))

67 (s) [Ref.]

LD₅₀ (mg/kg):

4417 (rats, oral)

References:

Seidell A. Solubilities of inorganic and metallic organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 296-297
�� .�. � ��. �� . ��. - �.: ��, 1983. - pp. 140-141 [Russian]
�� .�., �� .�. �� . - �.: ��, 1977. - pp. 72 [Russian]
�� . - �.ane, ��.one. - �.-�.: �� , 1961. - pp. 244, 780 [Russian]
�� . - �. 2. - �.-�.: ��, 1964. - pp. 96-97 [Russian]
�� . - �. 5. - �.: �� , 1999. - pp. 111 [Russian]
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